{"id":15419,"date":"2024-01-12T04:20:27","date_gmt":"2024-01-12T00:50:27","guid":{"rendered":"https:\/\/rasanegar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/"},"modified":"2024-01-12T04:20:27","modified_gmt":"2024-01-12T00:50:27","slug":"%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9","status":"publish","type":"post","link":"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/","title":{"rendered":"\u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0631\u0648\u0634 \u0641\u06cc\u0644\u062a\u0631() 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style=\"cursor:inherit\">\u0633\u0631\u0641\u0635\u0644\u0647\u0627\u06cc \u0645\u0637\u0644\u0628<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d9%85%d8%b9%d8%b1%d9%81%db%8c\" >\u0645\u0639\u0631\u0641\u06cc<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d9%86%d8%ad%d9%88_%d9%88_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\" >\u0646\u062d\u0648 \u0648 \u0645\u0642\u0627\u062f\u06cc\u0631 \u067e\u0627\u0631\u0627\u0645\u062a\u0631<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%da%86%da%af%d9%88%d9%86%d9%87_%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%a2%d8%ab%d8%a7%d8%b1\" >\u0686\u06af\u0648\u0646\u0647 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href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d8%b1%d9%88%d8%b4_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d9%81%d9%87%d8%b1%d8%b3%d8%aa_%d9%85%d8%b7%d8%a7%d9%84%d8%a8_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\" >\u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628 \u067e\u0627\u0631\u0627\u0645\u062a\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d8%b1%d9%88%d8%b4_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d8%a2%d8%b1%d8%a7%db%8c%d9%87_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\" >\u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0631\u0627\u06cc\u0647 \u067e\u0627\u0631\u0627\u0645\u062a\u0631<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d9%85%d8%ab%d8%a7%d9%84_%d9%87%d8%a7\" >\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0641\u06cc\u0644\u062a\u0631() \u0645\u062b\u0627\u0644 \u0647\u0627<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%af%d8%b1_%d9%85%d9%82%d8%a7%d8%a8%d9%84_%d9%be%db%8c%d8%af%d8%a7_%da%a9%d8%b1%d8%af%d9%86_%d8%b1%d9%88%d8%b4_%d9%87%d8%a7%db%8c_%d8%a2%d8%b1%d8%a7%db%8c%d9%87\" >\u0641\u06cc\u0644\u062a\u0631() \u062f\u0631 \u0645\u0642\u0627\u0628\u0644 \u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u0646() \u0631\u0648\u0634 \u0647\u0627\u06cc \u0622\u0631\u0627\u06cc\u0647<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%da%a9%d8%b1%d8%af%d9%86_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%a8%d8%a7_%d9%86%d9%82%d8%b4%d9%87\" >\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0641\u06cc\u0644\u062a\u0631() \u0628\u0627 \u0646\u0642\u0634\u0647 ()<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%da%a9%d8%b1%d8%af%d9%86_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%a8%d8%a7_indexof\" >\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0641\u06cc\u0644\u062a\u0631() \u0628\u0627 indexOf()<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/rasanegaar.com\/blog\/%d8%b1%d8%a7%d9%87%d9%86%d9%85%d8%a7%db%8c-%d8%b1%d9%88%d8%b4-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%d8%ac%d8%a7%d9%88%d8%a7-%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa-%d9%81%db%8c%d9%84%d8%aa%d8%b1-%da%a9\/#%d9%86%d8%aa%db%8c%d8%ac%d9%87\" >\u0646\u062a\u06cc\u062c\u0647<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 8<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span><p> <br \/>\n<\/p>\n<div class=\"content\"><noscript><\/p>\n<style>.lazyload-placeholder { display: none;  }<\/style>\n<p><\/noscript><\/p>\n<h2 id=\"introduction\"><span class=\"ez-toc-section\" id=\"%d9%85%d8%b9%d8%b1%d9%81%db%8c\"><\/span>\u0645\u0639\u0631\u0641\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u06a9\u0627\u0631\u0647\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0627\u0632 \u0627\u062a\u0648\u0645\u0627\u0633\u06cc\u0648\u0646\/\u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u0628\u0631\u0627\u06cc \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645!  \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u062f\u0633\u062a\u06cc \u063a\u0631\u0628\u0627\u0644 \u06a9\u0646\u06cc\u0645\u060c \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631\u0647\u0627 \u0648 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627 \u062a\u0642\u0631\u06cc\u0628\u0627\u064b \u0628\u0647 \u0627\u06cc\u0646 \u0627\u0646\u062f\u0627\u0632\u0647 \u0645\u0641\u06cc\u062f \u0646\u062e\u0648\u0627\u0647\u0646\u062f \u0628\u0648\u062f.  \u0628\u0627 \u062a\u0648\u0633\u0639\u0647 &#8211; \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0646\u0647\u0627\u06cc\u06cc \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627\u06cc\u062c \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0641\u0636\u0627\u06cc \u062c\u0633\u062a\u062c\u0648 \u0631\u0627 \u0628\u0647 \u0633\u0637\u062d \u0642\u0627\u0628\u0644 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u062d\u062f\u0648\u062f \u06a9\u0646\u0646\u062f.  \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u067e\u06cc\u0634\u0631\u0648\u062a\u0631\u06cc\u0646 \u0632\u0628\u0627\u0646 \u0641\u0631\u0627\u0646\u062a\u200c\u0627\u0646\u062f \u062f\u0631 \u062c\u0647\u0627\u0646 \u0627\u0633\u062a \u0648 \u0627\u0648\u0644\u06cc\u0646 \u0632\u0628\u0627\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0646\u0647\u0627\u06cc\u06cc \u0645\u06cc\u200c\u0628\u06cc\u0646\u0646\u062f.  \u0646\u06cc\u0627\u0632\u06cc \u0628\u0647 \u06af\u0641\u062a\u0646 \u0646\u06cc\u0633\u062a \u06a9\u0647 \u0627\u0647\u0645\u06cc\u062a \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646 \u0646\u0627\u062f\u06cc\u062f\u0647 \u06af\u0631\u0641\u062a.<\/p>\n<p>\u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c <code>filter()<\/code> \u0645\u062a\u062f \u0628\u0647 \u0645\u0627 \u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u062a\u0627 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u0645 &#8211; \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u0648\u062c\u0648\u062f \u0631\u0627 \u062a\u06a9\u0631\u0627\u0631 \u06a9\u0646\u06cc\u0645 \u0648 \u0641\u0642\u0637 \u0622\u0646\u0647\u0627\u06cc\u06cc \u0631\u0627 \u06a9\u0647 \u0628\u0627 \u0645\u0639\u06cc\u0627\u0631\u0647\u0627\u06cc \u062e\u0627\u0635\u06cc \u0645\u0637\u0627\u0628\u0642\u062a \u062f\u0627\u0631\u0646\u062f \u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u062c\u062f\u06cc\u062f \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u06cc\u0645.<\/p>\n<p>\u0627\u06cc\u0646 <code>filter()<\/code> \u062a\u0627\u0628\u0639 \u06cc\u06a9 \u0639\u0628\u0627\u0631\u062a \u0634\u0631\u0637\u06cc \u0631\u0627 \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0647\u0631 \u0648\u0631\u0648\u062f\u06cc \u062f\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0627\u062c\u0631\u0627 \u0645\u06cc \u06a9\u0646\u062f.  \u0627\u06af\u0631 \u0627\u06cc\u0646 \u0645\u0634\u0631\u0648\u0637 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u06cc \u0634\u0648\u062f <code>true<\/code>\u060c \u0639\u0646\u0635\u0631 \u0628\u0647 \u0622\u0631\u0627\u06cc\u0647 \u062e\u0631\u0648\u062c\u06cc \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u0634\u0648\u062f.  \u0627\u06af\u0631 \u0634\u0631\u0637 \u0646\u0627\u0645\u0648\u0641\u0642 \u0628\u0627\u0634\u062f\u060c \u0639\u0646\u0635\u0631 \u0628\u0647 \u0622\u0631\u0627\u06cc\u0647 \u062e\u0631\u0648\u062c\u06cc \u0627\u0636\u0627\u0641\u0647 \u0646\u0645\u06cc \u0634\u0648\u062f.<\/p>\n<blockquote>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0631\u0627\u0647\u0646\u0645\u0627\u060c \u0631\u0648\u0634 \u06a9\u0627\u0631 \u0628\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>filter()<\/code> \u0631\u0648\u0634.  \u0627\u0628\u062a\u062f\u0627 \u0628\u0627 \u0645\u062a\u062f\u060c \u0646\u062d\u0648 \u0648 \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u0647\u0627\u06cc \u0622\u0646 \u0622\u0634\u0646\u0627 \u0645\u06cc \u0634\u0648\u06cc\u0645.  \u0633\u067e\u0633\u060c \u0627\u0632 \u0686\u0646\u062f\u06cc\u0646 \u062f\u0633\u062a \u0639\u0628\u0648\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u0645 -\u0631\u0648\u06cc \u0646\u0645\u0648\u0646\u0647 \u06a9\u0627\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0647 \u0631\u0627\u062d\u062a\u06cc \u0628\u0627 \u0631\u0648\u0634 \u062d\u0644 \u0645\u06cc \u0634\u0648\u0646\u062f.  \u062f\u0631 \u0646\u0647\u0627\u06cc\u062a &#8211; \u0645\u0627 \u0622\u0646 \u0631\u0627 \u0628\u0627 \u06cc\u06a9 \u0631\u0648\u0634 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645 &#8211; <code>find()<\/code> \u0648 \u0639\u0645\u0644\u06a9\u0631\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n<\/blockquote>\n<h3 id=\"syntaxandparametervalues\"><span class=\"ez-toc-section\" id=\"%d9%86%d8%ad%d9%88_%d9%88_%d9%85%d9%82%d8%a7%d8%af%db%8c%d8%b1_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\"><\/span>\u0646\u062d\u0648 \u0648 \u0645\u0642\u0627\u062f\u06cc\u0631 \u067e\u0627\u0631\u0627\u0645\u062a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0646\u062d\u0648 \u0633\u0627\u062f\u0647 \u0627\u0633\u062a:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> filteredArray = oldArray.filter(callbackFn(element, index, array), context)\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 <code>callbackFn<\/code> \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0648\u0627\u0642\u0639\u0627\u064b \u0647\u0631 \u062a\u0627\u0628\u0639\/\u06af\u0632\u0627\u0631\u0647\/\u0645\u0639\u06cc\u0627\u0631 \u062f\u0644\u062e\u0648\u0627\u0647 \u0628\u0627\u0634\u062f\u060c \u062a\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u0628\u0648\u0644\u06cc \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f. \u0631\u0648\u06cc \u0627\u0631\u0632\u0634 <code>element<\/code>. <em>\u0627\u0632 \u0646\u0638\u0631 \u0641\u0646\u06cc<\/em>\u060c \u0644\u0627\u0632\u0645 \u0646\u06cc\u0633\u062a \u0627\u0632 \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u062f <code>element<\/code> \u062f\u0631 \u0645\u062d\u0627\u0633\u0628\u0627\u062a\u0634 \u0627\u0635\u0644\u0627\u064b\u060c \u0627\u0645\u0627 \u0628\u0647 \u0627\u062d\u062a\u0645\u0627\u0644 \u0632\u06cc\u0627\u062f \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u0641\u06cc\u0644\u062a\u0631\u06cc\u0646\u06af \u0686\u0646\u062f\u0627\u0646 \u0645\u0641\u06cc\u062f\u06cc \u0646\u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.<\/p>\n<p>\u0627\u06cc\u0646 <code>index<\/code> \u0648 <code>array<\/code> \u0627\u062e\u062a\u06cc\u0627\u0631\u06cc \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0647 \u0627\u062d\u062a\u0645\u0627\u0644 \u0632\u06cc\u0627\u062f \u0646\u06cc\u0627\u0632\u06cc \u0628\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646 \u0646\u062f\u0627\u0631\u06cc\u062f <code>array<\/code> \u062f\u0631 \u0639\u0645\u0644 <code>index<\/code> \u0634\u0627\u062e\u0635 \u0645\u0648\u0631\u062f \u0641\u0639\u0644\u06cc \u0627\u0633\u062a \u0648 <code>array<\/code> \u06cc\u06a9 \u0627\u0634\u0627\u0631\u0647 \u06af\u0631 \u0628\u0647 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0627\u0633\u062a.<\/p>\n<div class=\"alert alert-note\">\n<div class=\"flex\">\n<div class=\"flex-shrink-0 mr-3\"><\/div>\n<div class=\"w-full\">\n<p><strong>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f:<\/strong> \u062a\u0627\u0628\u0639 \u0641\u06cc\u0644\u062a\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u062c\u062f\u06cc\u062f \u0645\u06cc \u0633\u0627\u0632\u062f \u0648 \u062a\u0645\u0627\u0645 \u0627\u0634\u06cc\u0627\u06cc\u06cc \u0631\u0627 \u06a9\u0647 \u0645\u0639\u06cc\u0627\u0631\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0631\u0627 \u0628\u0631\u0622\u0648\u0631\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.  \u0627\u06cc\u0646 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0648 \u0627\u0633\u0627\u0633\u06cc \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u0645\u06cc \u062f\u0647\u062f.<\/p>\n<\/p><\/div><\/div><\/div>\n<h2 id=\"howjavascriptsfilterworks\"><span class=\"ez-toc-section\" id=\"%da%86%da%af%d9%88%d9%86%d9%87_%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%a2%d8%ab%d8%a7%d8%b1\"><\/span>\u0686\u06af\u0648\u0646\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a <em>\u0641\u06cc\u0644\u062a\u0631()<\/em> \u0622\u062b\u0627\u0631<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0646\u06af\u0627\u0647\u06cc \u0628\u0647 <code>filter()<\/code> \u0631\u0648\u0634 \u062f\u0631 \u0639\u0645\u0644  \u062f\u0631 \u0646\u0633\u062e\u0647 \u0647\u0627\u06cc \u0642\u0628\u0644\u06cc JS\u060c \u0642\u0628\u0644 \u0627\u0632 ES6 &#8211; \u06cc\u06a9 \u062a\u0627\u0628\u0639 callback \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> numbers = (<span class=\"hljs-number\">20<\/span>, <span class=\"hljs-number\">40<\/span>, <span class=\"hljs-number\">17<\/span>, <span class=\"hljs-number\">99<\/span>, <span class=\"hljs-number\">59<\/span>, <span class=\"hljs-number\">77<\/span>);\n<span class=\"hljs-keyword\">const<\/span> filteredNumbers = numbers.filter(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">number<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">return<\/span> number &gt; <span class=\"hljs-number\">20<\/span>;\n});\n  \n<span class=\"hljs-built_in\">console<\/span>.log(filteredNumbers); <span class=\"hljs-comment\">\/\/ (40,99,59,77)<\/span>\n<\/code><\/pre>\n<p>\u0627\u0632 ES6\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u06cc\u0646 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u0633\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u06a9\u0646\u06cc\u0645 <em>\u062a\u0627\u0628\u0639 \u0641\u0644\u0634<\/em>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> numbers = (<span class=\"hljs-number\">20<\/span>, <span class=\"hljs-number\">40<\/span>, <span class=\"hljs-number\">17<\/span>, <span class=\"hljs-number\">99<\/span>, <span class=\"hljs-number\">59<\/span>, <span class=\"hljs-number\">77<\/span>);\n<span class=\"hljs-keyword\">const<\/span> filteredNumbers = numbers.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">number<\/span>) =&gt;<\/span> {\n    <span class=\"hljs-keyword\">return<\/span> number &gt; <span class=\"hljs-number\">20<\/span>;\n});\n  \n<span class=\"hljs-built_in\">console<\/span>.log(filteredNumbers); <span class=\"hljs-comment\">\/\/ (40,99,59,77)<\/span>\n<\/code><\/pre>\n<p>\u06cc\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u062a\u0627\u0628\u0639 \u0631\u0627 \u0628\u0647 \u0634\u06a9\u0644 \u0632\u06cc\u0631 \u062c\u0645\u0639 \u06a9\u0646\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> numbers = (<span class=\"hljs-number\">20<\/span>, <span class=\"hljs-number\">40<\/span>, <span class=\"hljs-number\">17<\/span>, <span class=\"hljs-number\">99<\/span>, <span class=\"hljs-number\">59<\/span>, <span class=\"hljs-number\">77<\/span>);\n<span class=\"hljs-keyword\">const<\/span> filteredNumbers = numbers.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">number<\/span>) =&gt;<\/span> number &gt; <span class=\"hljs-number\">20<\/span>);\n<span class=\"hljs-built_in\">console<\/span>.log(filteredNumbers); <span class=\"hljs-comment\">\/\/ (40,99,59,77)<\/span>\n<\/code><\/pre>\n<h3 id=\"howtousethecontextobjectwithfilter\"><span class=\"ez-toc-section\" id=\"%d8%b1%d9%88%d8%b4_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d9%85%d8%aa%d9%86_%d9%86%d9%88%d8%b4%d8%aa%d9%87_%d8%b4%db%8c%d8%a1_%d8%a8%d8%a7_%d9%81%db%8c%d9%84%d8%aa%d8%b1\"><\/span>\u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>\u0645\u062a\u0646 \u0646\u0648\u0634\u062a\u0647<\/em> \u0634\u06cc\u0621 \u0628\u0627 <em>\u0641\u06cc\u0644\u062a\u0631()<\/em><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0627\u06cc\u0646 <code>filter()<\/code> \u0631\u0648\u0634 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0636\u0627\u0641\u06cc\u060c \u0627\u062e\u062a\u06cc\u0627\u0631\u06cc\u060c <code>context<\/code> \u0647\u062f\u0641 &#8211; \u0634\u06cc:<\/p>\n<pre><code class=\"hljs\">filter(callbackfn, contextobj);\n<\/code><\/pre>\n<p>\u0634\u06cc \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>this<\/code> \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc \u0627\u0632 \u062f\u0631\u0648\u0646 \u067e\u0627\u0633\u062e \u062a\u0645\u0627\u0633\u060c \u0648 <code>context<\/code> \u0646\u0634\u0627\u0646 \u062f\u0647\u0646\u062f\u0647 \u0647\u0631 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0622\u0646 \u0639\u0628\u0648\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <em>\u0632\u0645\u06cc\u0646\u0647<\/em> \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631  \u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0647 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0646\u06af\u0627\u0647 \u06a9\u0646\u06cc\u0645!<\/p>\n<p>\u0645\u0627 \u06cc\u06a9 \u0631\u0627 \u0645\u0631\u062a\u0628 \u0645\u06cc \u06a9\u0646\u06cc\u0645 <code>menu<\/code> \u0641\u0647\u0631\u0633\u062a\u060c \u062d\u0630\u0641 \u0647\u0631 \u0627\u0642\u0644\u0627\u0645 \u0628\u0627 \u0642\u06cc\u0645\u062a\u200c\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u06cc\u0646 15 \u062a\u0627 25 \u0646\u06cc\u0633\u062a. \u0645\u062d\u062f\u0648\u062f\u0647 \u0642\u06cc\u0645\u062a \u06cc\u06a9 \u0634\u06cc \u062c\u062f\u0627\u06af\u0627\u0646\u0647 \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0622\u0646 \u0631\u0627 \u0628\u0647 <code>filter()<\/code> \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 <em>\u0645\u062a\u0646 \u0646\u0648\u0634\u062a\u0647<\/em>.  \u0628\u0647 \u06cc\u06a9 \u0645\u0639\u0646\u0627 &#8211; \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u06cc\u06a9 \u0634\u06cc &#8220;\u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc&#8221; \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u062d\u0627\u0648\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0647 \u0637\u0648\u0631 \u06a9\u0644\u06cc \u0628\u0647 \u0622\u0646\u0647\u0627 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u0645\u060c \u0628\u062f\u0648\u0646 \u0627\u06cc\u0646\u06a9\u0647 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0633\u062e\u062a \u06a9\u062f\u06af\u0630\u0627\u0631\u06cc \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> menu = (\n    {\n        <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"buttermilk pancakes\"<\/span>,\n        <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">15.99<\/span>\n    },\n    {\n        <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"diner double\"<\/span>,\n        <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">13.99<\/span>\n    },\n    {\n        <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"godzilla milkshake\"<\/span>,\n        <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">6.99<\/span>\n    },\n    {\n        <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"country delight\"<\/span>,\n        <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">20.99<\/span>\n    },\n    {\n        <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"egg attack\"<\/span>,\n        <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">22.99<\/span>\n    }\n);\n  \n<span class=\"hljs-keyword\">let<\/span> priceRange = {\n    <span class=\"hljs-attr\">lower<\/span>: <span class=\"hljs-number\">15<\/span>,\n    <span class=\"hljs-attr\">upper<\/span>: <span class=\"hljs-number\">25<\/span>\n};\n<\/code><\/pre>\n<p>\u062d\u0627\u0644\u0627 \u0648\u0642\u062a\u0647 <code>filter()<\/code> \u0631\u0627 <code>menu<\/code> \u0644\u06cc\u0633\u062a\u060c \u0639\u0628\u0648\u0631 \u062f\u0631 <code>priceRange<\/code> \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 <code>context<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">let<\/span> filteredMenu = menu.filter(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">menu<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">return<\/span> menu.price &gt;= <span class=\"hljs-built_in\">this<\/span>.lower &amp;&amp; menu.price &lt;= <span class=\"hljs-built_in\">this<\/span>.upper;\n}, priceRange);\n  \n<span class=\"hljs-built_in\">console<\/span>.log(filteredMenu);\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\">(\n    {\n        name:\"buttermilk pancakes\",\n        price:15.99\n    },\n    {\n        name:\"country delight\",\n        price:20.99\n    },\n    {\n        name:\"egg attack\",\n        price:22.99\n    }\n)\n<\/code><\/pre>\n<h3 id=\"howtousetheindexparameter\"><span class=\"ez-toc-section\" id=\"%d8%b1%d9%88%d8%b4_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d9%81%d9%87%d8%b1%d8%b3%d8%aa_%d9%85%d8%b7%d8%a7%d9%84%d8%a8_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\"><\/span>\u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/em> \u067e\u0627\u0631\u0627\u0645\u062a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0627\u06cc\u0646 <code>index<\/code> \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0631\u0627\u06cc \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc \u0645\u0648\u0642\u0639\u06cc\u062a \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u062f\u0631 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f.  \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0627 \u0645\u0648\u0642\u0639\u06cc\u062a \u0639\u0646\u0627\u0635\u0631 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> users = (<span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-string\">\"Doe\"<\/span>, <span class=\"hljs-string\">\"Stephen\"<\/span>, <span class=\"hljs-string\">\"Matt\"<\/span>, <span class=\"hljs-string\">\"Abigail\"<\/span>, <span class=\"hljs-string\">\"Susu\"<\/span>);\n  \n<span class=\"hljs-keyword\">const<\/span> topThree = users.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">element, index<\/span>) =&gt;<\/span> {\n    <span class=\"hljs-keyword\">return<\/span> index &lt;= <span class=\"hljs-number\">2<\/span>;\n});\n\n<span class=\"hljs-built_in\">console<\/span>.log(topThree); <span class=\"hljs-comment\">\/\/ (\"John\", \"Doe\", \"Stephen\")<\/span>\n<\/code><\/pre>\n<p>\u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0627\u06cc\u0646 \u0627\u0645\u0631 \u0646\u06cc\u0632 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0628\u0627 \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 <em>\u0622\u062e\u0631\u06cc\u0646 N \u0639\u0646\u0635\u0631<\/em> \u0627\u0632 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647\u060c \u0627\u06cc\u0646\u062f\u06a9\u0633 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0646\u0642\u0634\u200c\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631\u06cc \u0628\u0627\u0632\u06cc \u06a9\u0646\u062f \u0648 \u062a\u0646\u0647\u0627 \u0645\u0639\u06cc\u0627\u0631\u06cc \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0646\u0628\u0627\u0634\u062f.<\/p>\n<h3 id=\"howtousethearrayparameter\"><span class=\"ez-toc-section\" id=\"%d8%b1%d9%88%d8%b4_%d8%a7%d8%b3%d8%aa%d9%81%d8%a7%d8%af%d9%87_%d8%a7%d8%b2_%d8%a2%d8%b1%d8%a7%db%8c%d9%87_%d9%be%d8%a7%d8%b1%d8%a7%d9%85%d8%aa%d8%b1\"><\/span>\u0631\u0648\u0634 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <em>\u0622\u0631\u0627\u06cc\u0647<\/em> \u067e\u0627\u0631\u0627\u0645\u062a\u0631<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0627\u06cc\u0646 <code>array<\/code> \u067e\u0627\u0631\u0627\u0645\u062a\u0631 \u0628\u0647 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u06a9\u0647 \u0645\u0627 \u0641\u06cc\u0644\u062a\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u0645 \u0627\u0631\u062c\u0627\u0639 \u0645\u06cc \u062f\u0647\u062f.  \u0627\u0632 \u0622\u0646\u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0647 \u0647\u0631 \u062d\u0627\u0644 \u062f\u0631 \u062d\u0627\u0644 \u062a\u06a9\u0631\u0627\u0631 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0622\u0631\u0627\u06cc\u0647 \u0647\u0633\u062a\u06cc\u062f\u060c \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u062f\u0648\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0631\u0627\u06cc\u0647 \u0631\u0627\u0636\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0628\u0648\u062f <code>array<\/code> \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u060c \u0627\u0645\u0627 \u0627\u06af\u0631 \u0645\u0646\u0637\u0642 \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f \u0631\u0648\u06cc \u0628\u0631\u062e\u06cc \u0627\u0632 \u062d\u0627\u0644\u062a \u0647\u0627 \u06cc\u0627 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u062e\u0648\u062f \u0622\u0631\u0627\u06cc\u0647:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> competitors = (<span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-string\">\"Doe\"<\/span>, <span class=\"hljs-string\">\"Stephen\"<\/span>, <span class=\"hljs-string\">\"Matt\"<\/span>, <span class=\"hljs-string\">\"Abigail\"<\/span>, <span class=\"hljs-string\">\"Susu\"<\/span>);\n  \n<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">selectWinners<\/span>(<span class=\"hljs-params\">name, index, array<\/span>) <\/span>{\n   \n    <span class=\"hljs-keyword\">if<\/span> (array.length &gt; <span class=\"hljs-number\">3<\/span> &amp;&amp; name.includes(<span class=\"hljs-string\">'a'<\/span>)) {\n        <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">true<\/span>;\n    } <span class=\"hljs-keyword\">else<\/span> {\n      <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">false<\/span>;\n    }\n}\n  \n<span class=\"hljs-keyword\">let<\/span> lselectLoosers = competitors.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">name, index, array<\/span>) =&gt;<\/span>\n    selectWinners(name, index, array)\n);\n\n<span class=\"hljs-built_in\">console<\/span>.log(lselectLoosers); <span class=\"hljs-comment\">\/\/ (\"Matt\", \"Abigail\", \"Susu\")<\/span>\n<\/code><\/pre>\n<p>\u0645\u062b\u0627\u0644 \u062f\u06cc\u06af\u0631 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u06cc\u0646 \u0628\u0627\u0634\u062f \u06a9\u0647 \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0646\u06cc\u0645\u06cc \u0627\u0632 \u0639\u0646\u0627\u0635\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0631\u0627 \u0628\u062f\u0633\u062a \u0622\u0648\u0631\u06cc\u0645.  \u062f\u0631 \u0622\u0646 \u0635\u0648\u0631\u062a\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0632 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0628\u0631\u0627\u06cc \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0644 \u0639\u0646\u0627\u0635\u0631 \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0639\u0646\u0627\u0635\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645 \u0631\u0648\u06cc \u0645\u0642\u062f\u0627\u0631 \u0634\u0627\u062e\u0635:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> halfArray = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">element, index, array<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">const<\/span> half = <span class=\"hljs-built_in\">Math<\/span>.floor(array.length \/ <span class=\"hljs-number\">2<\/span>);\n    <span class=\"hljs-keyword\">return<\/span> index &lt; half;\n};\n<\/code><\/pre>\n<p>\u0627\u06a9\u0646\u0648\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u0645 <code>halfArray<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> names = (<span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-string\">\"Doe\"<\/span>, <span class=\"hljs-string\">\"Stephen\"<\/span>, <span class=\"hljs-string\">\"Matt\"<\/span>, <span class=\"hljs-string\">\"Abigail\"<\/span>, <span class=\"hljs-string\">\"Susu\"<\/span>);\n<span class=\"hljs-keyword\">const<\/span> halfNames = names.filter(halfArray);\n<span class=\"hljs-built_in\">console<\/span>.log(halfNames); <span class=\"hljs-comment\">\/\/ (\"John\", \"Doe\", \"Stephen\")<\/span>\n<\/code><\/pre>\n<p>\u0628\u0647 \u0637\u0648\u0631 \u062e\u0644\u0627\u0635\u0647 &#8211; <code>filter()<\/code> \u0645\u062a\u062f \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0645\u062d\u0645\u0648\u0644 \u0631\u0627 \u0645\u06cc \u067e\u0630\u06cc\u0631\u062f \u06a9\u0647 \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0647\u0631 \u0639\u0646\u0635\u0631 \u0622\u0631\u0627\u06cc\u0647 \u0627\u062c\u0631\u0627 \u0645\u06cc \u0634\u0648\u062f.  \u0645\u0633\u062a\u0642\u0631 \u0631\u0648\u06cc \u0645\u0642\u062f\u0627\u0631 \u0628\u0627\u0632\u06af\u0634\u062a\u06cc \u0628\u0648\u0644\u06cc\u060c the <code>element<\/code> \u06cc\u0627 \u062f\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u062e\u0631\u0648\u062c\u06cc \u062c\u062f\u06cc\u062f \u0642\u0631\u0627\u0631 \u0645\u06cc \u06af\u06cc\u0631\u062f \u06cc\u0627 \u0642\u0631\u0627\u0631 \u0646\u0645\u06cc \u06af\u06cc\u0631\u062f.<\/p>\n<p>\u062f\u0631 \u067e\u0627\u06cc\u0627\u0646 \u062a\u06a9\u0631\u0627\u0631 &#8211; \u0641\u0642\u0637 \u0622\u0631\u0627\u06cc\u0647 \u062c\u062f\u06cc\u062f \u0628\u0647 \u062f\u0633\u062a \u0622\u0645\u062f\u0647 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0628\u0627 \u0645\u0639\u06cc\u0627\u0631\u0647\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u062f\u0631 \u062a\u0627\u0628\u0639 \u0645\u062d\u0645\u0648\u0644 \u0641\u06cc\u0644\u062a\u0631 \u0645\u06cc \u0634\u0648\u062f.  \u0622 <code>context<\/code> \u0634\u06cc\u0621 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0648\u0627\u0631\u062f \u06a9\u0631\u062f\u060c \u0648 \u0627\u063a\u0644\u0628 \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u06cc\u06a9 \u0634\u06cc &#8220;\u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc&#8221; \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u06a9\u0647 \u0645\u0642\u0627\u062f\u06cc\u0631 \u067e\u0648\u06cc\u0627 \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u062f\u0631 \u0637\u06cc \u0641\u06cc\u0644\u062a\u0631 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f.  \u0627\u06cc\u0646 <code>index<\/code> \u0628\u0647 \u0645\u0648\u0642\u0639\u06cc\u062a \u0639\u0646\u0635\u0631 \u0641\u0639\u0644\u06cc \u062f\u0631 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f\u060c \u0648 <code>array<\/code> \u0627\u0631\u062c\u0627\u0639 \u0628\u0647 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0627\u0633\u062a.<\/p>\n<h3 id=\"javascriptsfilterexamples\"><span class=\"ez-toc-section\" id=\"%d8%ac%d8%a7%d9%88%d8%a7_%d8%a7%d8%b3%da%a9%d8%b1%db%8c%d9%be%d8%aa_%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d9%85%d8%ab%d8%a7%d9%84_%d9%87%d8%a7\"><\/span>\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a <em>\u0641\u06cc\u0644\u062a\u0631()<\/em> \u0645\u062b\u0627\u0644 \u0647\u0627<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0627 \u0645\u0642\u062f\u0645\u0647 \u062e\u0627\u0631\u062c \u0627\u0632 \u0631\u0627\u0647 &#8211; \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f \u0628\u0647 \u0686\u0646\u062f \u0646\u0645\u0648\u0646\u0647 \u0639\u0645\u0644\u06cc \u0627\u0632 \u0622\u0646 \u0634\u06cc\u0631\u062c\u0647 \u0628\u0632\u0646\u06cc\u0645 <code>filter()<\/code> \u0631\u0648\u0634.<\/p>\n<h4 id=\"filteranarrayofobjectsbyvalue\">\u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627\u0621 \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0645\u0642\u062f\u0627\u0631 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u062f<\/h4>\n<p>\u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0627\u0634\u06cc\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0645\u0642\u062f\u0627\u0631\u06cc \u06a9\u0647 \u062f\u0631 \u0622\u0646\u0647\u0627 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06cc\u06a9\u06cc \u0627\u0632 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc \u0622\u0646 \u0627\u0633\u062a <code>filter()<\/code> \u0631\u0648\u0634.<\/p>\n<p>\u0628\u0631\u062e\u0648\u0631\u062f \u0628\u0627 \u0622\u0628\u062c\u06a9\u062a \u0647\u0627 \u062a\u0641\u0627\u0648\u062a \u0686\u0646\u062f\u0627\u0646\u06cc \u0628\u0627 \u06a9\u0627\u0631 \u0628\u0627 \u0627\u0646\u0648\u0627\u0639 \u062f\u06cc\u06af\u0631 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0646\u062f\u0627\u0631\u062f!<\/p>\n<p>\u0645\u062b\u0644\u0627\u064b \u0628\u06af\u0648\u06cc\u06cc\u0645 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u062f\u0627\u0631\u06cc\u0645 <em>\u062f\u0627\u0646\u0634\u062c\u0648<\/em> \u0627\u0634\u06cc\u0627\u0621\u060c \u0628\u0627 \u0686\u0646\u062f \u0641\u06cc\u0644\u062f.  \u0628\u06af\u0648\u06cc\u06cc\u062f \u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u062f \u062f\u0627\u0646\u0634\u062c\u0648\u06cc\u0627\u0646\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u0633\u0627\u0644 \u062c\u0627\u0631\u06cc \u0641\u0627\u0631\u063a\u200c\u0627\u0644\u062a\u062d\u0635\u06cc\u0644 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u062f <code>new Date().getFullYear()<\/code>.<\/p>\n<p>\u0634\u0645\u0627 \u0628\u0647 \u0631\u0627\u062d\u062a\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0645\u0642\u0627\u06cc\u0633\u0647 \u06a9\u0646\u06cc\u062f <code>graduationYear<\/code> \u0627\u0632 \u0647\u0631 <code>element<\/code> \u0628\u0647 \u0633\u0627\u0644 \u062c\u0627\u0631\u06cc:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> students = (\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Doe\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span> : <span class=\"hljs-number\">2022<\/span> },\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"Stephen\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Matt\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span> : <span class=\"hljs-number\">1402<\/span> },\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"Abigail\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Susu\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span> : <span class=\"hljs-number\">2022<\/span> }\n);\n\n<span class=\"hljs-keyword\">const<\/span> currentYear = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-built_in\">Date<\/span>().getFullYear();\n\n<span class=\"hljs-keyword\">let<\/span> graduatingStudents = students.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">element<\/span>) =&gt;<\/span> {\n    <span class=\"hljs-keyword\">if<\/span> (element.graduationYear === currentYear) {\n        <span class=\"hljs-keyword\">return<\/span> element;\n    }\n});\n  \n<span class=\"hljs-built_in\">console<\/span>.log(graduatingStudents);\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\">(\n    {\n        firstName:\"John\",\n        lastName:\"Doe\",\n        graduationYear:2022\n    },\n    {\n        firstName:\"Abigail\",\n        lastName:\"Susu\",\n        graduationYear:2022\n    }\n)\n<\/code><\/pre>\n<h4 id=\"filteringprimenumbersusingarrayfilterinjavascript\">\u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0639\u062f\u0627\u062f \u0627\u0635\u0644\u06cc \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u06cc\u0644\u062a\u0631 \u0622\u0631\u0627\u06cc\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h4>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u062a\u0645\u0631\u06cc\u0646 \u0633\u0627\u062f\u0647 \u0627\u062f\u0627\u0645\u0647 \u062f\u0647\u06cc\u0645 &#8211; \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0639\u062f\u0627\u062f \u0627\u0648\u0644!  \u0628\u06cc\u0627\u06cc\u06cc\u062f \u06cc\u06a9 \u0644\u06cc\u0633\u062a \u0628\u0627 \u062a\u0639\u062f\u0627\u062f \u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u06cc \u0627\u0632 \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u0645 \u0648 \u0633\u067e\u0633 <code>filter()<\/code> \u0622\u06cc \u062a\u06cc:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> myArray = (-<span class=\"hljs-number\">7<\/span>, -<span class=\"hljs-number\">5<\/span>, -<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">12<\/span>, <span class=\"hljs-number\">14<\/span>, <span class=\"hljs-number\">13<\/span>, <span class=\"hljs-number\">15<\/span>, <span class=\"hljs-number\">70<\/span>, <span class=\"hljs-number\">17<\/span>, <span class=\"hljs-number\">33<\/span>, <span class=\"hljs-number\">25<\/span>, <span class=\"hljs-number\">27<\/span>, <span class=\"hljs-number\">30<\/span>, <span class=\"hljs-number\">97<\/span>);\n      \n<span class=\"hljs-keyword\">const<\/span> primeNumbers = myArray.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">element<\/span>) =&gt;<\/span> {\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">2<\/span>; element &gt; i; i++) {\n        <span class=\"hljs-keyword\">if<\/span> (element % i === <span class=\"hljs-number\">0<\/span>) {\n          <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">false<\/span>;\n        }\n    }\n    <span class=\"hljs-keyword\">return<\/span> element &gt; <span class=\"hljs-number\">1<\/span>;\n});\n  \n<span class=\"hljs-built_in\">console<\/span>.log(primeNumbers); <span class=\"hljs-comment\">\/\/ (2, 3, 13, 17, 97)<\/span>\n<\/code><\/pre>\n<p>\u0627\u0644\u0628\u062a\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f a \u0631\u0627 \u0646\u06cc\u0632 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0646\u06cc\u062f <code>primeNumbers()<\/code> \u062a\u0627\u0628\u0639\u060c \u06a9\u0647 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0631\u0627 \u0645\u06cc \u067e\u0630\u06cc\u0631\u062f \u0648 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f <code>true<\/code> \u06cc\u0627 <code>false<\/code> \u0645\u0633\u062a\u0642\u0631 \u0631\u0648\u06cc \u0622\u06cc\u0627 \u0639\u0646\u0635\u0631 \u0627\u0648\u0644 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631\u060c \u0648 \u0633\u067e\u0633 \u0627\u0632 \u0622\u0646 \u0631\u0648\u0634 \u062f\u0631 <code>filter()<\/code> \u0627\u06af\u0631 \u0686\u0646\u062f\u06cc\u0646 \u0628\u0627\u0631 \u0628\u0627 \u0622\u0646 \u062a\u0645\u0627\u0633 \u0645\u06cc \u06af\u06cc\u0631\u06cc\u062f \u062a\u0645\u0627\u0633 \u0628\u06af\u06cc\u0631\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> numbers = (-<span class=\"hljs-number\">7<\/span>, -<span class=\"hljs-number\">5<\/span>, -<span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">12<\/span>, <span class=\"hljs-number\">14<\/span>, <span class=\"hljs-number\">13<\/span>, <span class=\"hljs-number\">15<\/span>, <span class=\"hljs-number\">70<\/span>, <span class=\"hljs-number\">17<\/span>, <span class=\"hljs-number\">33<\/span>, <span class=\"hljs-number\">25<\/span>, <span class=\"hljs-number\">27<\/span>, <span class=\"hljs-number\">30<\/span>, <span class=\"hljs-number\">97<\/span>);\n\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">findPrimeNumbers<\/span>(<span class=\"hljs-params\">element<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">2<\/span>; element &gt; i; i++) {\n        <span class=\"hljs-keyword\">if<\/span> (element % i === <span class=\"hljs-number\">0<\/span>) {\n          <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">false<\/span>;\n        }\n    }\n    <span class=\"hljs-keyword\">return<\/span> element &gt; <span class=\"hljs-number\">1<\/span>;\n}\n\n<span class=\"hljs-built_in\">console<\/span>.log(numbers.filter(findPrimeNumbers)); <span class=\"hljs-comment\">\/\/ (2, 3, 13, 17, 97)<\/span>\n<\/code><\/pre>\n<h4 id=\"howtofilternumbersfromanarray\">\u0631\u0648\u0634 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0639\u062f\u0627\u062f \u0627\u0632 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647<\/h4>\n<p>\u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0639\u062f\u0627\u062f \u062f\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647\u060c \u0628\u06cc\u0646 \u0639\u0646\u0627\u0635\u0631 \u062f\u06cc\u06af\u0631\u060c \u0628\u0647 \u0622\u0633\u0627\u0646\u06cc \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u06a9 \u0639\u062f\u062f \u0627\u0633\u062a\u060c \u0648 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u062f\u0646 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u0628\u0648\u0644\u06cc \u0627\u0633\u062a:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> isNumber = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">element<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-built_in\">Number<\/span>.isFinite(element);\n};\n<\/code><\/pre>\n<p>\u0627\u06a9\u0646\u0648\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0631\u0648\u0634 \u0641\u06cc\u0644\u062a\u0631 \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 \u062a\u0627\u0628\u0639 \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u062c\u062f\u062f \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> random = (<span class=\"hljs-string\">'1'<\/span>, <span class=\"hljs-string\">'blue'<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-string\">'-4'<\/span>, <span class=\"hljs-number\">0<\/span>, <span class=\"hljs-literal\">true<\/span>, -<span class=\"hljs-number\">3.4<\/span> );\n<span class=\"hljs-keyword\">const<\/span> numbers = random.filter(isNumber);\n<span class=\"hljs-built_in\">console<\/span>.log(numbers); <span class=\"hljs-comment\">\/\/ (2, 0, -3.4)<\/span>\n<\/code><\/pre>\n<p>\u0631\u0648\u0634 \u0628\u0627\u0644\u0627 \u0628\u0631\u0627\u06cc \u0627\u0639\u062f\u0627\u062f\u06cc \u06a9\u0647 \u0631\u0634\u062a\u0647 \u0647\u0627\u06cc \u0646\u0645\u0627\u06cc\u0634 \u062f\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u0646\u062f \u0645\u0641\u06cc\u062f \u0646\u06cc\u0633\u062a\u060c \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0631\u0648\u0634 \u062f\u06cc\u06af\u0631 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0628\u062a\u062f\u0627 \u062a\u0628\u062f\u06cc\u0644 \u0639\u0646\u0635\u0631 \u0628\u0647 \u0639\u062f\u062f \u062f\u0631 \u0635\u0648\u0631\u062a \u0648\u062c\u0648\u062f \u0628\u0627\u0634\u062f (<code>parseFloat()<\/code>) \u0648 \u0645\u0642\u062f\u0627\u0631 \u062a\u0628\u062f\u06cc\u0644 \u0634\u062f\u0647 \u0631\u0627 \u0628\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f <code>Number.isFinite()<\/code>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> isNumber = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">element<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-built_in\">Number<\/span>.isFinite(<span class=\"hljs-built_in\">parseFloat<\/span>(element));\n};\n\n<span class=\"hljs-keyword\">const<\/span> random = (<span class=\"hljs-string\">'1'<\/span>, <span class=\"hljs-string\">'blue'<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-string\">'-4'<\/span>, <span class=\"hljs-number\">0<\/span>, <span class=\"hljs-literal\">true<\/span>, -<span class=\"hljs-number\">3.4<\/span> );\n<span class=\"hljs-keyword\">const<\/span> numbers = random.filter(isNumber);        \n<span class=\"hljs-built_in\">console<\/span>.log(numbers); <span class=\"hljs-comment\">\/\/ (\"1\", 2, \"-4\", 0, -3.4)<\/span>\n<\/code><\/pre>\n<h2 id=\"filtervsfindarraymethods\"><span class=\"ez-toc-section\" id=\"%d9%81%db%8c%d9%84%d8%aa%d8%b1_%d8%af%d8%b1_%d9%85%d9%82%d8%a7%d8%a8%d9%84_%d9%be%db%8c%d8%af%d8%a7_%da%a9%d8%b1%d8%af%d9%86_%d8%b1%d9%88%d8%b4_%d9%87%d8%a7%db%8c_%d8%a2%d8%b1%d8%a7%db%8c%d9%87\"><\/span><em>\u0641\u06cc\u0644\u062a\u0631()<\/em> \u062f\u0631 \u0645\u0642\u0627\u0628\u0644 <em>\u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u0646()<\/em> \u0631\u0648\u0634 \u0647\u0627\u06cc \u0622\u0631\u0627\u06cc\u0647<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0627\u0631\u0632\u0634 \u0622\u0646 \u0631\u0627 \u062f\u0627\u0631\u062f \u06a9\u0647 \u0644\u062d\u0638\u0647 \u0627\u06cc \u0648\u0642\u062a \u0628\u06af\u0630\u0627\u0631\u06cc\u0645 \u0648 \u0627\u0632 \u0686\u0647 \u0686\u06cc\u0632\u06cc \u0642\u062f\u0631\u062f\u0627\u0646\u06cc \u06a9\u0646\u06cc\u0645 <code>filter()<\/code> \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u0648 \u0628\u0631\u0627\u06cc \u0686\u0647 \u0645\u0648\u0627\u0631\u062f\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u0645\u06cc \u0634\u0648\u062f. <em>\u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u06cc\u06a9 \u0644\u06cc\u0633\u062a<\/em> \u0645\u0633\u062a\u0642\u0631 \u0631\u0648\u06cc \u06cc\u06a9 \u06cc\u0627 \u0686\u0646\u062f \u0645\u0639\u06cc\u0627\u0631 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0634\u0627\u0645\u0644 \u0628\u0627\u0632\u06af\u0634\u062a a <em>\u0641\u0647\u0631\u0633\u062a \u0641\u0631\u0639\u06cc<\/em>\u060c \u0645\u062a\u0646\u0627\u0633\u0628 \u0628\u0627 \u0645\u0639\u06cc\u0627\u0631\u0647\u0627 &#8211; \u0648 \u0628\u0647 \u0646\u062f\u0631\u062a\u060c \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0648\u0627\u062d\u062f\u060c \u0627\u06af\u0631 \u0645\u0639\u06cc\u0627\u0631\u0647\u0627 \u0628\u0633\u06cc\u0627\u0631 \u0633\u062e\u062a\u06af\u06cc\u0631\u0627\u0646\u0647 \u0628\u0627\u0634\u062f.  \u0648\u0642\u062a\u06cc \u0634\u0645\u0627 \u0647\u0633\u062a\u06cc\u062f <em>\u0628\u0647 \u062f\u0646\u0628\u0627\u0644 \u06cc\u06a9 \u0639\u0646\u0635\u0631<\/em> \u062f\u0631 \u06cc\u06a9 \u0644\u06cc\u0633\u062a &#8211; \u0634\u0645\u0627 \u0641\u06cc\u0644\u062a\u0631 \u0645\u06cc \u06a9\u0646\u06cc\u062f <em>\u0647\u0645\u0647 \u0686\u06cc\u0632<\/em> \u0628\u0647 \u062c\u0632 \u0639\u0646\u0635\u0631 \u0647\u062f\u0641\u060c \u062f\u0631 \u06cc\u06a9 \u0644\u06cc\u0633\u062a \u0628\u0627\u0632\u06af\u0631\u062f\u0627\u0646\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.  \u06cc\u06a9 \u062a\u0646\u0627\u0633\u0628 \u0637\u0628\u06cc\u0639\u06cc \u062a\u0631 \u0628\u0631\u0627\u06cc \u062f\u0648\u0645\u06cc \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 <code>find()<\/code> \u0639\u0646\u0635\u0631\u060c \u0628\u0647 \u062c\u0627\u06cc <code>filter()<\/code> \u06cc\u06a9 \u0644\u06cc\u0633\u062a.<\/p>\n<ul>\n<li><code>filter()<\/code>  \u0641\u0647\u0631\u0633\u062a\u06cc \u0627\u0632 \u062a\u0645\u0627\u0645 \u0639\u0646\u0627\u0635\u0631\u06cc \u06a9\u0647 \u06af\u0632\u0627\u0631\u0647 \u0631\u0627 &#8220;\u06af\u0630\u0631\u0627\u0646\u062f\u0647 \u0627\u0646\u062f&#8221; \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f<\/li>\n<li><code>find()<\/code>  \u0627\u0648\u0644\u06cc\u0646 \u0645\u0641\u0639\u0648\u0644\u06cc \u0631\u0627 \u06a9\u0647 \u06af\u0632\u0627\u0631\u0647 \u0631\u0627 &#8220;\u06af\u0630\u0631\u0627\u0646\u062f\u0647&#8221; \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f<\/li>\n<\/ul>\n<p>\u0641\u0631\u0636 \u06a9\u0646\u06cc\u062f \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0627\u0632 \u0645\u0646\u0648 \u0628\u0627 \u062f\u0633\u062a\u0647 \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 \u062f\u0627\u0631\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\">  <span class=\"hljs-keyword\">const<\/span> menu = (\n    {\n      <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"buttermilk pancakes\"<\/span>,\n      <span class=\"hljs-attr\">category<\/span>: <span class=\"hljs-string\">\"breakfast\"<\/span>,\n      <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">15.99<\/span>,\n      <span class=\"hljs-attr\">status<\/span>: <span class=\"hljs-string\">\"available\"<\/span>\n    },\n    {\n      <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"diner double\"<\/span>,\n      <span class=\"hljs-attr\">category<\/span>: <span class=\"hljs-string\">\"lunch\"<\/span>,\n      <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">13.99<\/span>,\n      <span class=\"hljs-attr\">status<\/span>: <span class=\"hljs-string\">\"available\"<\/span>\n    },\n    {\n      <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"godzilla milkshake\"<\/span>,\n      <span class=\"hljs-attr\">category<\/span>: <span class=\"hljs-string\">\"shakes\"<\/span>,\n      <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">6.99<\/span>,\n      <span class=\"hljs-attr\">status<\/span>: <span class=\"hljs-string\">\"available\"<\/span>\n    },\n    {\n      <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"country delight\"<\/span>,\n      <span class=\"hljs-attr\">category<\/span>: <span class=\"hljs-string\">\"breakfast\"<\/span>,\n      <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">20.99<\/span>,\n      <span class=\"hljs-attr\">status<\/span>: <span class=\"hljs-string\">\"86\"<\/span>\n    },\n    {\n      <span class=\"hljs-attr\">name<\/span>: <span class=\"hljs-string\">\"egg attack\"<\/span>,\n      <span class=\"hljs-attr\">category<\/span>: <span class=\"hljs-string\">\"lunch\"<\/span>,\n      <span class=\"hljs-attr\">price<\/span>: <span class=\"hljs-number\">22.99<\/span>,\n      <span class=\"hljs-attr\">status<\/span>: <span class=\"hljs-string\">\"available\"<\/span>\n    }\n  );\n<\/code><\/pre>\n<p>\u0633\u0627\u0639\u062a 8 \u0635\u0628\u062d \u0627\u0633\u062a \u0648 \u0631\u0633\u062a\u0648\u0631\u0627\u0646 \u0641\u0642\u0637 \u062a\u0627 \u0633\u0627\u0639\u062a 10 \u0635\u0628\u062d\u0627\u0646\u0647 \u0633\u0631\u0648 \u0645\u06cc \u06a9\u0646\u062f.  \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u062f \u0645\u0648\u0627\u0631\u062f \u063a\u06cc\u0631 \u0635\u0628\u062d\u0627\u0646\u0647 \u0631\u0627 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u062f:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">let<\/span> breakfastMenu = menu.filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">menu<\/span>) =&gt;<\/span> menu.category === <span class=\"hljs-string\">\"breakfast\"<\/span>);  \n<span class=\"hljs-built_in\">console<\/span>.log(breakfastMenu);\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\">(\n    {\n        name:\"buttermilk pancakes\",\n        category:\"breakfast\",\n        price:15.99,\n        status:\"available\"\n    },\n    {\n        name:\"country delight\",\n        category:\"breakfast\",\n        price:20.99,\n        status:\"86\"\n    }\n)\n<\/code><\/pre>\n<p>\u062d\u0627\u0644\u0627 \u0628\u06af\u0648\u06cc\u06cc\u062f \u06a9\u0633\u06cc \u0628\u0647 \u062f\u0646\u0628\u0627\u0644 \u0633\u0641\u0627\u0631\u0634 \u0627\u0633\u062a <em>&#8220;\u0634\u0627\u062f\u06cc \u06a9\u0634\u0648\u0631&#8221;<\/em>.  \u0641\u0647\u0631\u0633\u062a \u0641\u0631\u0639\u06cc \u0622\u0646\u0642\u062f\u0631 \u06a9\u0648\u062a\u0627\u0647 \u0627\u0633\u062a \u06a9\u0647 \u0628\u062a\u0648\u0627\u0646\u06cc\u0645 \u0645\u062a\u0648\u062c\u0647 \u0634\u0648\u06cc\u0645 \u06a9\u0647 86 \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u0628\u0627 \u0644\u06cc\u0633\u062a\u200c\u0647\u0627\u06cc \u0637\u0648\u0644\u0627\u0646\u06cc\u200c\u062a\u0631 &#8211; \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0622\u06cc\u0627 \u0627\u06cc\u0646 \u0645\u0648\u0631\u062f\u060c \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u06cc\u0627\u0641\u062a \u0634\u062f\u060c \u0645\u0648\u062c\u0648\u062f \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> delight = menu.find(<span class=\"hljs-function\">(<span class=\"hljs-params\">menu<\/span>) =&gt;<\/span> menu.name === <span class=\"hljs-string\">\"country delight\"<\/span>);\n\n<span class=\"hljs-keyword\">if<\/span> (delight.status !== <span class=\"hljs-string\">\"86\"<\/span>) {\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'Available!'<\/span>);\n} <span class=\"hljs-keyword\">else<\/span> {\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'Sorry, the item is not available :('<\/span>);\n}\n<\/code><\/pre>\n<p>\u0627\u06cc\u0646 \u0645\u0646\u062c\u0631 \u0628\u0647:<\/p>\n<pre><code class=\"hljs\">Sorry, the item is not available :(\n<\/code><\/pre>\n<h2 id=\"usingfilterwithmap\">\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 <em>\u0641\u06cc\u0644\u062a\u0631()<\/em> \u0628\u0627 <em>\u0646\u0642\u0634\u0647 ()<\/em><\/h2>\n<p>\u0627\u06cc\u0646 <code>map()<\/code> \u0631\u0648\u0634 \u0628\u0631\u0627\u06cc \u062a\u06a9\u0631\u0627\u0631 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u0648 \u0627\u0639\u0645\u0627\u0644 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0628\u0631\u0627\u06cc \u0647\u0631 \u0639\u0646\u0635\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u0648 \u0646\u062a\u06cc\u062c\u0647 \u0631\u0627 \u0628\u0647 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647 \u062c\u062f\u06cc\u062f \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.  \u0627\u06cc\u0646 \u06cc\u06a9 \u0631\u0648\u0634 \u0648\u0627\u0642\u0639\u0627 \u0631\u0627\u06cc\u062c \u0627\u0633\u062a \u0648 \u0628\u0627 \u0622\u0646 \u0632\u0646\u062c\u06cc\u0631 \u0645\u06cc \u0634\u0648\u062f <code>filter()<\/code> \u062e\u0648\u0628!  \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f \u0686\u0646\u062f \u062f\u0627\u0646\u0634 \u0622\u0645\u0648\u0632 \u0631\u0627 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u0645 \u0648 \u0633\u067e\u0633 \u0639\u0646\u0627\u0635\u0631 \u0631\u0627 \u0628\u0647 \u0646\u0627\u0645 \u0648 \u0646\u0627\u0645 \u062e\u0627\u0646\u0648\u0627\u062f\u06af\u06cc \u0622\u0646\u0647\u0627 \u0646\u06af\u0627\u0634\u062a \u06a9\u0646\u06cc\u0645:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">const<\/span> students = (\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Doe\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span>: <span class=\"hljs-number\">2022<\/span> },\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"Stephen\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Matt\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span>: <span class=\"hljs-number\">1402<\/span> },\n    { <span class=\"hljs-attr\">firstName<\/span>: <span class=\"hljs-string\">\"Abigail\"<\/span>, <span class=\"hljs-attr\">lastName<\/span>: <span class=\"hljs-string\">\"Susu\"<\/span>, <span class=\"hljs-attr\">graduationYear<\/span>: <span class=\"hljs-number\">2022<\/span> }\n);\n  \n<span class=\"hljs-keyword\">let<\/span> graduatingStudents = students\n    .filter(<span class=\"hljs-function\">(<span class=\"hljs-params\">element<\/span>) =&gt;<\/span> element.grduationYear === <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-built_in\">Date<\/span>().getFullYear())\n    .map(<span class=\"hljs-function\">(<span class=\"hljs-params\">item<\/span>) =&gt;<\/span> {\n      <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">`<span class=\"hljs-subst\">${item.firstName}<\/span> <span class=\"hljs-subst\">${item.lastName}<\/span>`<\/span>;\n});\n  \n<span class=\"hljs-built_in\">console<\/span>.log(graduatingStudents); <span class=\"hljs-comment\">\/\/ (\"John Doe\", \"Abigail Susu\")<\/span>\n<\/code><\/pre>\n<h2 id=\"usingfilterwithindexof\">\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 <em>\u0641\u06cc\u0644\u062a\u0631()<\/em> \u0628\u0627 <em>indexOf()<\/em><\/h2>\n<p>\u0627\u06cc\u0646 <code>indexOf()<\/code> \u0631\u0648\u0634 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0631\u0627\u06cc \u0628\u0631\u0631\u0633\u06cc \u0627\u06cc\u0646\u06a9\u0647 \u0622\u06cc\u0627 \u06cc\u06a9 \u0631\u0634\u062a\u0647 \u0628\u0627 \u06cc\u06a9 \u0631\u0634\u062a\u0647 \u0641\u0631\u0639\u06cc \u0634\u0631\u0648\u0639 \u0645\u06cc \u0634\u0648\u062f \u06cc\u0627 \u0646\u0647 \u0648 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0634\u0631\u0648\u0637 \u0639\u0646\u0627\u0635\u0631 \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u062f \u0631\u0648\u06cc \u0686\u0647 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u0646\u062f \u0686\u0647 \u0646\u06a9\u0646\u0646\u062f.  \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0641\u0647\u0631\u0633\u062a\u06cc \u0627\u0632 \u062f\u0648\u0631\u0647\u200c\u0647\u0627\u06cc \u0639\u0644\u0648\u0645 \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0646\u06cc\u0645 \u0631\u0648\u06cc \u0622\u06cc\u0627 \u0622\u0646\u0647\u0627 \u0628\u0627 \u0634\u0631\u0648\u0639 <em>&#8220;mth&#8221;<\/em>\u060c \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0622\u0646 \u0647\u0627 \u0647\u0633\u062a\u0646\u062f <em>\u062f\u0631\u0648\u0633 \u0631\u06cc\u0627\u0636\u06cc<\/em>:<\/p>\n<pre><code class=\"hljs\"><span class=\"hljs-keyword\">let<\/span> sciCourses = (<span class=\"hljs-string\">\"Mth101\"<\/span>, <span class=\"hljs-string\">\"Chm201\"<\/span>, <span class=\"hljs-string\">\"Bio301\"<\/span>, <span class=\"hljs-string\">\"Mth203\"<\/span>, <span class=\"hljs-string\">\"Mth205\"<\/span>);\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title\">checkCourses<\/span>(<span class=\"hljs-params\">courseArray, searchText<\/span>) <\/span>{\n    <span class=\"hljs-keyword\">return<\/span> courseArray.filter(<span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">item<\/span>) <\/span>{\n        <span class=\"hljs-keyword\">return<\/span> item.toLowerCase().indexOf(searchText.toLowerCase()) !== -<span class=\"hljs-number\">1<\/span>;\n    });\n}\n<span class=\"hljs-built_in\">console<\/span>.log(checkCourses(sciCourses, <span class=\"hljs-string\">\"mth\"<\/span>)); <span class=\"hljs-comment\">\/\/ (\"Mth101\", \"Mth203\", \"Mth205\")<\/span>\n<\/code><\/pre>\n<div class=\"alert alert-note\">\n<div class=\"flex\">\n<div class=\"flex-shrink-0 mr-3\"><\/div>\n<div class=\"w-full\">\n<p><strong>\u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f:<\/strong> \u0628\u0627\u0632 \u0647\u0645 \u0627\u0632 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 <code>filter()<\/code> \u0645\u062a\u062f \u0622\u0631\u0627\u06cc\u0647 \u0627\u0635\u0644\u06cc \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u0645\u06cc \u062f\u0647\u062f\u060c \u0628\u0627\u06cc\u062f \u0622\u0631\u0627\u06cc\u0647 \u0641\u06cc\u0644\u062a\u0631 \u0634\u062f\u0647 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u06a9\u0646\u06cc\u0645 \u062a\u0627 \u0628\u0639\u062f\u0627\u064b \u0628\u0627 \u0622\u0646 \u06a9\u0627\u0631 \u06a9\u0646\u06cc\u0645.<\/p>\n<\/p><\/div><\/div><\/div>\n<h2 id=\"conclusion\"><span class=\"ez-toc-section\" id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\"><\/span>\u0646\u062a\u06cc\u062c\u0647<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0631\u0627\u0647\u0646\u0645\u0627\u060c \u0646\u06af\u0627\u0647\u06cc \u0628\u0647 \u0631\u0648\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0646\u062f\u0627\u062e\u062a\u0647 \u0627\u06cc\u0645 <code>filter()<\/code> \u0631\u0648\u0634 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f\u060c \u0648 \u0686\u06af\u0648\u0646\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0639\u0646\u0627\u0635\u0631 \u06cc\u06a9 \u0622\u0631\u0627\u06cc\u0647\u060c \u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 \u06cc\u06a9 \u0645\u062d\u0645\u0648\u0644\/\u0645\u0639\u06cc\u0627\u0631\u0647\u0627\u06cc \u0641\u06cc\u0644\u062a\u0631 \u062e\u0627\u0635 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645.  \u0645\u0627 \u0646\u06af\u0627\u0647\u06cc \u0628\u0647 \u0627\u0633\u062a\u062f\u0644\u0627\u0644 \u0647\u0627\u06cc \u0647\u0645\u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u062e\u062a\u0647 \u0627\u06cc\u0645\u060c \u0645\u0627\u0646\u0646\u062f <code>context<\/code>\u060c <code>index<\/code> \u0648 <code>array<\/code> \u06a9\u0647 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0645\u0646\u0637\u0642 \u0645\u062d\u0645\u0648\u0644 \u0631\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0647\u06cc\u062f.<\/p>\n<p>\u062f\u0631 \u0646\u0647\u0627\u06cc\u062a\u060c \u0628\u0647 \u0686\u0646\u062f\u06cc\u0646 \u0646\u0645\u0648\u0646\u0647 \u0646\u06af\u0627\u0647\u06cc \u0627\u0646\u062f\u0627\u062e\u062a\u0647 \u0627\u06cc\u0645 \u0648 \u067e\u0648\u0634\u0634 \u062f\u0627\u062f\u0647 \u0627\u06cc\u0645 <code>find()<\/code> \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u06cc \u0628\u0631\u0627\u06cc \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0641\u0642\u0637 \u06cc\u06a9 \u0639\u0646\u0635\u0631 \u0631\u0627 \u062c\u0633\u062a\u062c\u0648 \u0645\u06cc \u06a9\u0646\u06cc\u062f \u0648 \u0686\u06af\u0648\u0646\u0647 <code>filter()<\/code> \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0627 \u0631\u0648\u0634 \u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u0646\u062c\u06cc\u0631\u0647 \u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f.<\/p>\n<\/div>\n<p><br \/>\n<br \/>\u0645\u0646\u062a\u0634\u0631 \u0634\u062f\u0647 \u062f\u0631 1403-01-12 04:20:18<br \/>\n<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-center kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;center&quot;,&quot;id&quot;:&quot;15419&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0627\u0645\u062a\u06cc\u0627\u0632 \u0634\u0645\u0627 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628&quot;,&quot;legend&quot;:&quot;0\\\/5 (0 \u0631\u0627\u06cc)&quot;,&quot;size&quot;:&quot;30&quot;,&quot;title&quot;:&quot;\u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0631\u0648\u0634 \u0641\u06cc\u0644\u062a\u0631() \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0632 \u0637\u0631\u06cc\u0642 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u06a9\u0627\u0631\u0647\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0627\u0632 \u0627\u062a\u0648\u0645\u0627\u0633\u06cc\u0648\u0646\\\/\u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u0628\u0631\u0627\u06cc \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645!  \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u062f\u0633\u062a\u06cc \u063a\u0631\u0628\u0627\u0644 \u06a9\u0646\u06cc\u0645\u060c \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631\u0647\u0627 \u0648 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627 \u062a\u0642\u0631\u06cc\u0628\u0627\u064b \u0628\u0647 \u0627\u06cc\u0646 \u0627\u0646\u062f\u0627\u0632\u0647 \u0645\u0641\u06cc\u062f \u0646\u062e\u0648\u0627\u0647\u0646\u062f \u0628\u0648\u062f.  \u0628\u0627 \u062a\u0648\u0633\u0639\u0647 - \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0646\u0647\u0627\u06cc\u06cc \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627\u06cc\u062c \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u062c\u0633\u062a\u062c\u0648 \u0631\u0627 \u0645\u062d\u062f\u0648\u062f \u06a9\u0646\u0646\u062f ...&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} ({count} \u0631\u0627\u06cc)&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-left: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 30px; height: 30px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 24px;\">\n            <span class=\"kksr-muted\">\u0627\u0645\u062a\u06cc\u0627\u0632 \u0634\u0645\u0627 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u0632\u0645\u0627\u0646 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0644\u0639\u0647: <\/span> <span class=\"rt-time\"> 8<\/span> <span class=\"rt-label rt-postfix\">\u062f\u0642\u06cc\u0642\u0647<\/span><\/span>\u0645\u0639\u0631\u0641\u06cc \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u06a9\u0627\u0631\u0647\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u0627 \u0627\u0632 \u0627\u062a\u0648\u0645\u0627\u0633\u06cc\u0648\u0646\/\u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u0628\u0631\u0627\u06cc \u0622\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u06cc\u0645! \u0627\u06af\u0631 \u0628\u062e\u0648\u0627\u0647\u06cc\u0645 \u0647\u0645\u0647 \u0686\u06cc\u0632 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u062f\u0633\u062a\u06cc \u063a\u0631\u0628\u0627\u0644 \u06a9\u0646\u06cc\u0645\u060c \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631\u0647\u0627 \u0648 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627 \u062a\u0642\u0631\u06cc\u0628\u0627\u064b \u0628\u0647 \u0627\u06cc\u0646 \u0627\u0646\u062f\u0627\u0632\u0647 \u0645\u0641\u06cc\u062f \u0646\u062e\u0648\u0627\u0647\u0646\u062f \u0628\u0648\u062f. \u0628\u0627 \u062a\u0648\u0633\u0639\u0647 &#8211; \u0641\u06cc\u0644\u062a\u0631 \u06a9\u0631\u062f\u0646 \u062f\u0627\u062f\u0647 \u0647\u0627 \u0628\u0631\u0627\u06cc \u06a9\u0627\u0631\u0628\u0631\u0627\u0646 \u0646\u0647\u0627\u06cc\u06cc \u06cc\u06a9 \u06a9\u0627\u0631 \u0631\u0627\u06cc\u062c \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 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