{"id":2282,"date":"2021-07-12T20:00:54","date_gmt":"2021-07-12T15:30:54","guid":{"rendered":"http:\/\/rabsana.ir\/tutorials\/?p=2282"},"modified":"2021-07-26T07:58:06","modified_gmt":"2021-07-26T03:28:06","slug":"how-to-optimize-javascript-performance","status":"publish","type":"post","link":"https:\/\/rabsana.ir\/tutorials\/how-to-optimize-javascript-performance\/","title":{"rendered":"\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0633\u0631\u0639\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a"},"content":{"rendered":"<h2 style=\"text-align: center;\"><strong>\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06cc\u06a9 \u0627\u0645\u0631 \u0645\u0647\u0645 \u0648 \u0636\u0631\u0648\u0631\u06cc \u0627\u0633\u062a.\u00a0<\/strong><\/h2>\n<p><strong>\u062f\u0631 \u0627\u06cc\u0646 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\u0645\u0648\u0628\u0627\u06cc\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u0634\u0648\u062f. \u0645\u062d\u0628\u0648\u0628\u06cc\u062a \u0627\u06cc\u0646 \u0632\u0628\u0627\u0646 \u062f\u0631 \u0628\u06cc\u0646 \u0632\u0628\u0627\u0646 \u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc\u060c \u0628\u0627\u0639\u062b \u0634\u062f\u0647 \u06a9\u0647 \u06a9\u0627\u0631 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0648 \u062a\u0648\u0633\u0639\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u0622\u0646 \u06cc\u06a9 \u0627\u0645\u0631 \u0636\u0631\u0648\u0631\u06cc \u0648 \u0645\u0647\u0645 \u0645\u062d\u0633\u0648\u0628 \u0634\u0648\u062f.<\/p>\n<h2>\u0645\u0648\u0627\u0631\u062f\u06cc \u06a9\u0647 \u0628\u0627\u0639\u062b \u0639\u0645\u0644\u06a9\u0631\u062f \u0646\u0627\u0645\u0646\u0627\u0633\u0628 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0645\u06cc\u0634\u0648\u0646\u062f:<\/h2>\n<p>\u062f\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0686\u0627\u0644\u0634 \u0647\u0627 \u0648 \u0645\u0633\u0627\u0626\u0644 \u0632\u06cc\u0627\u062f\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u062f\u0631 \u0627\u062f\u0627\u0645\u0647 \u0622\u0646 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u0648 \u062a\u062d\u0644\u06cc\u0644 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f:<\/p>\n<h3>1. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Event Handler \u0647\u0627\u06cc \u06a9\u0645 \u06a9\u06cc\u0641\u06cc\u062a<\/h3>\n<p>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627\u06cc \u0645\u0646\u0627\u0633\u0628\u06cc \u0645\u062b\u0644 Event Handler \u00a0\u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0648 \u0633\u0631\u0639\u062a \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u062a\u0642\u0648\u06cc\u062a \u06a9\u0646\u062f \u0648 \u0639\u0645\u0642 \u00a0call stack \u0631\u0627 \u06a9\u0627\u0647\u0634 \u062f\u0647\u062f.<\/p>\n<p>\u0628\u0631\u0627\u06cc \u0627\u0646\u062a\u062e\u0627\u0628 \u0631\u0648\u06cc\u062f\u0627\u062f \u0645\u0646\u0627\u0633\u0628 \u0648 \u06a9\u0627\u0631\u0622\u0645\u062f\u060c \u0628\u0627\u06cc\u062f \u0628\u0627 \u062a\u0645\u0627\u0645 \u0631\u0648\u06cc\u062f\u0627\u062f \u0647\u0627 \u0648 \u0646\u062d\u0648\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f\u0634\u0627\u0646 \u0622\u0634\u0646\u0627 \u0628\u0627\u0634\u06cc\u062f \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u06cc\u062f \u0645\u062a\u0646\u0627\u0633\u0628 \u0628\u0627 \u0646\u06cc\u0627\u0632\u062a\u0627\u0646 \u0622\u0646\u00a0 \u0631\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u0648 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n<h3>2. \u06a9\u062f \u0646\u0648\u06cc\u0633\u06cc \u0646\u0627\u0645\u0646\u0638\u0645<\/h3>\n<p>\u0628\u0647 \u0637\u0648\u0631 \u062f\u0631 \u06a9\u062f\u0646\u0648\u06cc\u0633\u06cc \u0628\u0627 \u0647\u0631 \u0632\u0628\u0627\u0646\u06cc\u060c \u06cc\u06a9 \u0633\u0631\u06cc \u0642\u0648\u0627\u0639\u062f \u0628\u0631\u0627\u06cc \u062e\u0648\u0627\u0646\u0627\u06cc \u0648 \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0647\u062a\u0631 \u067e\u0631\u0648\u0698\u0647 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0631\u0639\u0627\u06cc\u062a \u0634\u0648\u062f. \u062f\u0627\u0634\u062a\u0646 \u06a9\u062f\u0647\u0627 \u0648 \u062f\u0633\u062a\u0648\u0631\u0627\u062a \u0645\u0646\u0638\u0645 \u0628\u0627\u0639\u062b \u0645\u06cc\u0634\u0648\u062f \u06a9\u0647 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u06af\u0627\u0646 \u0648\u0642\u062a \u062e\u06cc\u0644\u06cc \u06a9\u0645\u06cc \u0628\u0631 \u0631\u0648\u06cc \u062e\u0648\u0627\u0646\u062f\u0646 \u0648 \u0628\u0631\u0631\u0633\u06cc \u06a9\u062f \u0647\u0627 \u0628\u06af\u0630\u0627\u0631\u0646\u062f \u0648 \u0628\u0647 \u0633\u0631\u0639\u062a \u0642\u0637\u0639\u0647 \u06a9\u062f \u0645\u0648\u0631\u062f \u0646\u0638\u0631 \u062e\u0648\u062f \u0631\u0627 \u067e\u06cc\u062f\u0627 \u06a9\u0646\u0646\u062f \u0648 \u062a\u0642\u0631\u06cc\u0628\u0627 \u062a\u0645\u0627\u0645 \u0648\u0642\u062a \u062e\u0648\u062f \u0631\u0627 \u0628\u0631 \u0631\u0648\u06cc \u062a\u0648\u0633\u0639\u0647 \u0622\u0646 \u0628\u06af\u0630\u0627\u0631\u0646\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u06cc\u06a9 \u062f\u0633\u062a\u0627\u0648\u0631\u062f \u0628\u0632\u0631\u06af \u0628\u0631\u0627\u06cc \u0622\u0646\u0647\u0627 \u0645\u062d\u0633\u0648\u0628 \u0645\u06cc\u0634\u0648\u062f.<\/p>\n<p>\u0646\u0627\u0645\u0646\u0638\u0645 \u0648 \u0646\u0627\u062e\u0648\u0627\u0646\u0627 \u0628\u0648\u062f\u0646 \u06a9\u062f\u0647\u0627 \u062a\u0627 \u062d\u062f \u0632\u06cc\u0627\u062f\u06cc\u00a0 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u062e\u062a\u0644\u0627\u0644 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0639\u0645\u0644\u06a9\u0631\u062f JavaScript<b> \u0631\u0627 <\/b>\u062a\u0627 \u062d\u062f\u0648\u062f \u0632\u06cc\u0627\u062f\u06cc \u0645\u062e\u062a\u0644 \u06a9\u0646\u062f. \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0628\u0631\u0627\u06cc \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0627\u06cc\u062f \u0627\u06a9\u0645\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (ECMAScript) \u0631\u0627 \u06cc\u0627\u062f \u0628\u06af\u06cc\u0631\u06cc\u062f \u0648 \u0647\u0646\u06af\u0627\u0645 \u06a9\u062f \u0646\u0648\u06cc\u0633\u06cc \u0627\u0632 \u0622\u0646 \u067e\u06cc\u0631\u0648\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<p><b>\u0627\u06a9\u0645\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (ECMAScript) \u0686\u06cc\u0633\u062a\u061f <\/b>ECMA International \u0633\u0627\u0632\u0645\u0627\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u0647\u0627\u06cc \u06a9\u0644\u06cc \u0648 \u062c\u0632\u0626\u06cc \u062f\u0631 \u062d\u0648\u0632\u0647 \u06cc \u0641\u0646\u0627\u0648\u0631\u06cc \u0631\u0627 \u062a\u0639\u0631\u06cc\u0641 \u0648 \u0645\u0634\u062e\u0635 \u0645\u06cc\u06a9\u0646\u062f. \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644 \u06cc\u06a9\u06cc \u0627\u0632 \u0642\u0648\u0627\u0639\u062f \u0648 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u0647\u0627\u06cc \u0631\u0627\u06cc\u062c\u06cc \u06a9\u0647 \u0645\u0637\u0645\u0626\u0646\u0627 \u0627\u0632 \u0622\u0646 \u0622\u06af\u0627\u0647 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\u062f\u0627\u0631\u062f. \u06a9\u0647 \u0628\u0647 \u0627\u06cc\u0646 \u0646\u0648\u0639 \u0686\u06cc\u062f\u0645\u0627\u0646\u060c \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f QWERTY \u0645\u06cc\u06af\u0648\u06cc\u0646\u062f \u06a9\u0647 \u062a\u0648\u0633\u0637 \u0633\u0627\u0632\u0645\u0627\u0646 ECMA \u062a\u0639\u0631\u06cc\u0641 \u0648 \u062a\u0639\u06cc\u06cc\u0646 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n<p>\u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0648 \u0645\u062b\u0627\u0644 \u0628\u0627\u0644\u0627 \u0645\u06cc\u062a\u0648\u0627\u0646 \u0646\u062a\u06cc\u062c\u0647 \u06af\u0631\u0641\u062a \u06a9\u0647 \u0627\u06a9\u0645\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0634\u0627\u0645\u0644 \u0642\u0648\u0627\u0646\u06cc\u0646 \u0648 \u062f\u0633\u062a\u0648\u0631\u0627\u0644\u0639\u0645\u0644 \u0647\u0627\u06cc\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0633\u0627\u0632\u0645\u0627\u0646 \u0627\u06a9\u0645\u0627 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\u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u062f\u0631\u0633\u062a\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0646\u0634\u0648\u062f. \u0627\u0632 \u0622\u0646\u0647\u0627 \u062e\u06cc\u0644\u06cc \u06a9\u0645 \u0648 \u06cc\u0627 \u0628\u06cc\u0634 \u0627\u0632 \u062d\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f. \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u0627\u062f\u0631\u0633\u062a \u0627\u0632 Dependency \u0647\u0627\u060c \u0628\u0647 \u0637\u0648\u0631 \u0645\u0633\u062a\u0642\u06cc\u0645 \u062f\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0631\u0646\u0627\u0645\u0647 \u0648 \u067e\u0631\u0648\u0698\u0647 \u062a\u0627\u062b\u06cc\u0631 \u0645\u0646\u0641\u06cc \u0645\u06cc\u06af\u0630\u0627\u0631\u062f. \u0628\u0647 \u0647\u0645\u06cc\u0646 \u062f\u0644\u06cc\u0644 \u062a\u0648\u0633\u0639\u0647 \u062f\u0647\u0646\u062f\u0647 \u0648 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633 \u0628\u0627\u06cc\u062f \u0639\u0644\u0645 \u0648 \u0622\u06af\u0627\u0647\u06cc \u06a9\u0627\u0645\u0644 \u0627\u0632 Dependency \u0647\u0627 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0637\u0648\u0631\u06cc \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0642\u0631\u0627\u0631 \u062f\u0647\u062f \u06a9\u0647 \u0628\u0627\u0639\u062b \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0647\u062a\u0631 \u0634\u0648\u062f.<\/p>\n<h3>4. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Iteration \u0647\u0627\u06cc \u0646\u0627\u06a9\u0627\u0631\u0622\u0645\u062f<\/h3>\n<p>\u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a Iteration \u0628\u0647 \u0645\u0639\u0646\u06cc \u062a\u06a9\u0631\u0627\u0631 \u06cc\u06a9 \u0641\u0631\u0627\u06cc\u0646\u062f \u0628\u0631\u0627\u06cc \u062a\u0648\u0644\u06cc\u062f \u062f\u0646\u0628\u0627\u0644\u0647 \u0627\u06cc\u06cc \u0627\u0632 \u0646\u062a\u0627\u06cc\u062c \u0627\u0633\u062a. \u06a9\u0647 \u067e\u0631\u0648\u0633\u0647 \u0627\u0646\u062c\u0627\u0645 \u0622\u0646\u060c \u0632\u0645\u0627\u0646 \u0628\u0631 \u0627\u0633\u062a. \u0628\u0627 \u0627\u06cc\u0646 \u062d\u0627\u0644 \u0628\u0631\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u067e\u0631\u0648\u0698\u0647 \u0648 \u0628\u0631\u0646\u0627\u0645\u0647 \u0645\u0641\u06cc\u062f \u0627\u0633\u062a. \u0632\u06cc\u0631\u0627 \u067e\u0631\u0648\u0633\u0647 \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0645\u062f\u062a \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627\u06cc \u0622\u0646\u0647\u0627 \u0637\u0648\u0644\u0627\u0646\u06cc \u0627\u0633\u062a\u060c \u06cc\u06a9 \u0646\u0642\u0637\u0647 \u0634\u0631\u0648\u0639 \u06a9\u0627\u0645\u0644 \u0648 \u0645\u0646\u0627\u0633\u0628 \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n<h2>\u0645\u0648\u0627\u0631\u062f\u06cc \u06a9\u0647 \u0628\u0627\u0639\u062b \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0647\u06cc\u0646\u0647 \u0648 \u0645\u0646\u0627\u0633\u0628 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0645\u06cc\u0634\u0648\u0646\u062f:<\/h2>\n<h3>1. \u0627\u0635\u0644\u0627\u062d \u0648 \u0645\u062e\u062a\u0635\u0631 \u0633\u0627\u0632\u06cc HTML<\/h3>\n<p>HTML \u0646\u0642\u0634 \u0645\u0647\u0645 \u0648 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0627\u06cc\u06cc \u062f\u0631 \u062a\u0639\u06cc\u06cc\u0646 \u0632\u0645\u0627\u0646 query \u0647\u0627 \u0648 \u0648\u06cc\u0631\u0627\u06cc\u0634 \u0627\u0634\u06cc\u0627 DOM \u0647\u0627\u06cc \u0645\u0631\u062a\u0628\u0637 \u0628\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0627\u0631\u062f.<\/p>\n<p>\u0628\u0627 \u0646\u0635\u0641 \u06a9\u0631\u062f\u0646 \u06a9\u062f\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 HTML \u0645\u06cc \u062a\u0648\u0627\u0646 \u0633\u0631\u0639\u062a DOM \u0631\u0627 \u062f\u0648 \u0628\u0631\u0627\u0628\u0631 \u06a9\u0631\u062f. \u06a9\u0647 \u06cc\u06a9 \u06a9\u0627\u0631 \u0686\u0627\u0644\u0634 \u0628\u0631\u0627\u0646\u06af\u06cc\u0632 \u0645\u062d\u0633\u0648\u0628 \u0645\u06cc\u0634\u0648\u062f\u060c \u0627\u0645\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u06a9\u0644\u06cc \u0645\u06cc\u062a\u0648\u0627\u0646 \u0628\u0627 \u06a9\u0646\u0627\u0631 \u06af\u0630\u0627\u0634\u062a\u0646 \u0628\u0631\u0686\u0633\u0628 \u0647\u0627\u06cc\u06cc \u0645\u0627\u0646\u0646\u062f &lt;div&gt; \u0648 &lt;span&gt; \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0627\u062f.<\/p>\n<h3>2. \u062a\u063a\u06cc\u06cc\u0631 \u0648 \u062f\u0633\u062a\u0647 \u0628\u0646\u062f\u06cc DOM<\/h3>\n<p>HTML \u0646\u0642\u0634 \u0645\u0647\u0645 \u0648 \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0627\u06cc\u06cc \u062f\u0631 \u062a\u0639\u06cc\u06cc\u0646 \u0632\u0645\u0627\u0646 query \u0647\u0627 \u0648 \u0648\u06cc\u0631\u0627\u06cc\u0634 \u0627\u0634\u06cc\u0627 DOM \u0647\u0627\u06cc \u0645\u0631\u062a\u0628\u0637 \u0628\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0627\u0631\u062f.<\/p>\n<p>\u0628\u0627 \u0646\u0635\u0641 \u06a9\u0631\u062f\u0646 \u06a9\u062f\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 HTML \u0645\u06cc \u062a\u0648\u0627\u0646 \u0633\u0631\u0639\u062a DOM \u0631\u0627 \u062f\u0648 \u0628\u0631\u0627\u0628\u0631 \u06a9\u0631\u062f. \u06a9\u0647 \u06cc\u06a9 \u06a9\u0627\u0631 \u0686\u0627\u0644\u0634 \u0628\u0631\u0627\u0646\u06af\u06cc\u0632 \u0645\u062d\u0633\u0648\u0628 \u0645\u06cc\u0634\u0648\u062f\u060c \u0627\u0645\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u06a9\u0644\u06cc \u0645\u06cc\u062a\u0648\u0627\u0646 \u0628\u0627 \u06a9\u0646\u0627\u0631 \u06af\u0630\u0627\u0634\u062a\u0646 \u0628\u0631\u0686\u0633\u0628 \u0647\u0627\u06cc\u06cc \u0645\u0627\u0646\u0646\u062f &lt;div&gt; \u0648 &lt;span&gt; \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0627\u062f.<\/p>\n<p>\u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0648 \u0646\u0645\u0627\u06cc\u0634 \u0631\u0646\u062f\u0631\u0647\u0627\u06cc \u062a\u06a9\u0631\u0627\u0631\u06cc \u062f\u0631 \u062e\u0631\u0648\u062c\u06cc\u060c DOM \u0647\u0627 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u06a9\u0644\u06cc \u0648 \u06cc\u06a9\u062c\u0627 \u062f\u0633\u062a\u0647 \u0628\u0646\u062f\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<h3>3. \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u0645\u062a\u062f \u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc asynchronous<\/h3>\n<p>\u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0631\u0627\u06cc \u0648\u0627\u06a9\u0634\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627\u060c \u0628\u0647 \u062a\u0645\u0627\u0633 \u0647\u0627\u06cc \u062f\u0627\u062e\u0644\u06cc \u0632\u06cc\u0627\u062f \u0647\u0645\u0631\u0627\u0647 \u0628\u0627 API \u0647\u0627\u06cc \u0645\u062a\u0639\u062f\u062f \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u0646\u062f.<\/p>\n<p>\u0628\u0627 \u062a\u0648\u062c\u0647 \u0627\u06cc\u0646\u06a9\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u0635\u0648\u0631\u062a \u062a\u06a9 \u0631\u0634\u062a\u0647 \u0627\u06cc\u06cc \u0639\u0645\u0644 \u0645\u06cc\u06a9\u0646\u062f\u060c \u0628\u0631\u0627\u06cc \u0647\u0631 \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0647 \u06cc\u06a9 \u0645\u06cc\u0627\u0646 \u0627\u0641\u0632\u0627\u0631 (Middleware) \u0646\u06cc\u0627\u0632 \u0627\u0633\u062a. \u0647\u0645\u0686\u0646\u06cc\u0646 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a\u00a0 asynchronous \u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0627\u0632 \u062a\u0648\u0627\u0628\u0639 async.js \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u06a9\u0646\u062f.<\/p>\n<p>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0648\u06cc\u0698\u06af\u06cc \u0647\u0627\u06cc \u062a\u0648\u0627\u0628\u0639 async \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u060c \u0645\u06cc \u062a\u0648\u0627\u0646 \u0628\u0647 \u0635\u0648\u0631\u062a \u0647\u0645\u0632\u0645\u0627\u0646 \u0627\u0632 \u06cc\u06a9 \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u062e\u0627\u0631\u062c\u06cc \u0628\u0631\u0627\u06cc \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc \u0647\u0645\u0647 asynchronous \u0647\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f.<\/p>\n<h3>4. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0641\u0634\u0631\u062f\u0647 \u0633\u0627\u0632 gzip<\/h3>\n<p>\u0628\u0639\u0636\u06cc \u0627\u0632 \u0641\u0627\u06cc\u0644 \u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u062d\u062c\u0645 \u0632\u06cc\u0627\u062f\u06cc \u062f\u0627\u0631\u0646\u062f \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0641\u0634\u0631\u062f\u0647 \u06cc\u0627 Zip \u0634\u0648\u0646\u062f. \u0628\u0631\u0627\u06cc \u0632\u06cc\u067e \u06a9\u0631\u062f\u0646 \u0648 \u0641\u0634\u0631\u062f\u0647 \u0633\u0627\u0632\u06cc \u0641\u0627\u06cc\u0644 \u0647\u0627 \u0645\u06cc\u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u0641\u0634\u0631\u062f\u0647 \u0633\u0627\u0632 GZip \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. GZip \u0632\u0645\u0627\u0646 \u0628\u0627 \u06a9\u0627\u0647\u0634 lag time\u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0631\u0646\u0627\u0645\u0647 \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u0645\u06cc \u062f\u0647\u062f \u0648 \u0633\u067e\u0633 \u067e\u0647\u0646\u0627\u06cc \u0628\u0627\u0646\u062f \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n<h3>5. \u0628\u06a9\u0627\u0631\u06af\u06cc\u0631\u06cc HTTP \/ 2<\/h3>\n<p>\u0622\u062e\u0631\u06cc\u0646 \u0646\u0633\u062e\u0647 \u0627\u0632 HTTP \u06a9\u0647 \u0645\u0646\u062a\u0634\u0631 \u0634\u062f\u0647\u060c\u00a0 HTTP \/ 2 \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u0628\u0647\u0628\u0648\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0648 \u0633\u0631\u0639\u062a \u0628\u062e\u0634\u06cc\u062f\u0646 \u0628\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u0648\u0628 \u0633\u0627\u06cc\u062a \u0628\u0633\u06cc\u0627\u0631 \u0645\u0648\u062b\u0631 \u0648 \u062a\u0627\u062b\u06cc\u0631\u06af\u0630\u0627\u0631 \u0627\u0633\u062a.<\/p>\n<p>HTTP \/ 2 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 multiplexing\u060c \u0627\u0645\u06a9\u0627\u0646 \u0627\u0631\u0633\u0627\u0644 \u0647\u0645\u0632\u0645\u0627\u0646 \u0686\u0646\u062f\u06cc\u0646 \u062f\u0631\u062e\u0648\u0627\u0633\u062a (request ) \u0648 \u067e\u0627\u0633\u062e (respons ) \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u06a9\u0646\u062f \u0645\u0627\u0646\u0646\u062f\u00a0 \u0628\u0627\u0641\u0631 \u06a9\u0631\u062f\u0646 DOM.<\/p>\n<p>\u0628\u0631\u0627\u06cc \u06a9\u0645\u062a\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f\u0646 \u0627\u0632 DOM \u0648 \u062d\u0627\u0641\u0638\u0647 \u060c \u0645\u06cc\u062a\u0648\u0627\u0646 \u0627\u0632 \u0628\u0627\u0641\u0631 \u06a9\u0631\u062f\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f \u0627\u0644\u0628\u062a\u0647 \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u0645\u06cc\u062a\u0648\u0627\u0646 \u0627\u0632 \u0628\u0627\u0641\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f \u06a9\u0647 \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 DIV \u0647\u0627\u06cc \u0642\u0627\u0628\u0644 \u0627\u0633\u06a9\u0631\u0648\u0644 \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f.<\/p>\n<h3>6. \u0645\u062d\u062f\u0648\u062f \u06a9\u0631\u062f\u0646 dependency \u0647\u0627\u06cc \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647<\/h3>\n<p>Loading time \u0647\u0627 \u0645\u06cc\u062a\u0648\u0627\u0646\u0646\u062f dependency \u06a9\u062a\u0627\u0628\u062e\u0627\u0646\u0647 \u0647\u0627 \u0631\u0627 affect \u06a9\u0646\u0646\u062f \u0648 \u06cc\u0627 \u062a\u062d\u062a \u062a\u0627\u062b\u06cc\u0631 \u0642\u0631\u0627\u0631 \u062f\u0647\u0646\u062f \u067e\u0633 \u0645\u0647\u0645 \u0627\u0633\u062a \u06a9\u0647 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\u0645\u0627\u0698\u0648\u0644 \u0646\u06cc\u0627\u0632 \u0627\u0633\u062a\u061f<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">\u062f\u0644\u06cc\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u06cc\u0646 \u0641\u0631\u06cc\u0645 \u0648\u0631\u06a9 \u0686\u06cc\u0633\u062a\u061f<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">\u0622\u06cc\u0627 \u0627\u0631\u0632\u0634 \u0647\u0632\u06cc\u0646\u0647 \u0627\u0636\u0627\u0641\u06cc \u062f\u0627\u0631\u062f\u061f<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\">\u0622\u06cc\u0627 \u0631\u0648\u0634 \u0633\u0627\u062f\u0647 \u062a\u0631\u06cc \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0627\u06cc\u0646 \u06a9\u0627\u0631 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u061f<\/li>\n<\/ul>\n<p style=\"text-align: center;\">\u0633\u067e\u0633 \u0628\u0627 \u06cc\u06a9\u06cc \u06a9\u0631\u062f\u0646 \u0648 \u06cc\u06a9\u067e\u0627\u0631\u0686\u0647 \u0633\u0627\u0632\u06cc \u062a\u0645\u0627\u0645 \u0641\u0627\u06cc\u0644 \u0647\u0627\u06cc JS\u060c \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u0647\u06cc\u0646\u0647 \u06a9\u0646\u06cc\u062f.<\/p>\n<h3>8. \u067e\u06cc\u0627\u062f\u0647 \u0633\u0627\u0632\u06cc \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a\u06cc \u0645\u062e\u0635\u0648\u0635 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f JS<\/h3>\n<p>\u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u062d\u062a\u0645\u0627 \u0628\u0627\u06cc\u062f \u0627\u0632 \u06cc\u06a9 \u0627\u0628\u0632\u0627\u0631 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u062f. \u0627\u0628\u0632\u0627\u0631\u0647\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0631\u0646\u0627\u0645\u0647 \u0632\u06cc\u0627\u062f\u06cc \u0627\u0631\u0627\u0626\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9\u06cc \u0627\u0632 \u0622\u0646\u0647\u0627 \u0627\u0628\u0632\u0627\u0631 Retrace \u0627\u0633\u062a \u06a9\u0647 \u0647\u0645\u0631\u0627\u0647 \u0628\u0627 RUM \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u0634\u0648\u062f. RUM \u0633\u0631\u0639\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u0648\u0628 \u0631\u0627 \u0628\u06cc\u0634\u062a\u0631 \u0645\u06cc\u06a9\u0646\u062f \u0648 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u06a9\u0646\u062a\u0631\u0644 \u06a9\u0627\u0645\u0644 \u06a9\u062f\u0647\u0627\u06cc \u062c\u0644\u0648\u06cc \u0648 \u0627\u0646\u062a\u0647\u0627\u06cc \u067e\u0634\u062a \u0631\u0627 \u0628\u0647 \u0637\u0648\u0631 \u0647\u0645\u0632\u0645\u0627\u0646 \u0645\u06cc \u062f\u0647\u062f \u0648 \u06a9\u0627\u0631 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0648 \u0631\u062f\u06cc\u0627\u0628\u06cc \u06af\u0644\u0648\u06af\u0627\u0647 \u0647\u0627 \u0631\u0627 \u0622\u0633\u0627\u0646 \u062a\u0631 \u0645\u06cc\u06a9\u0646\u062f \u0648 \u0631\u0627\u0647 \u062d\u0644 \u0647\u0627\u06cc \u0628\u0647\u062a\u0631\u06cc \u0628\u0631\u0627\u06cc \u0622\u0646 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u062f\u0647\u062f. \u0648\u0628 \u0633\u0627\u06cc\u062a \u0648 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0647\u062a\u0631 \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0634\u0648\u0646\u062f \u0646\u06cc\u0632 \u062a\u0639\u0627\u0645\u0644 \u0628\u0633\u06cc\u0627\u0631 \u0628\u0647\u062a\u0631\u06cc \u062e\u0648\u0627\u0647\u0646\u062f \u062f\u0627\u0634\u062a. \u06a9\u0627\u0631\u0628\u0631\u0627\u0646\u06cc \u06a9\u0647 \u0628\u0647 \u0622\u0646\u0647\u0627 \u0645\u0631\u0627\u062c\u0639\u0647 \u0645\u06cc\u06a9\u0646\u0646\u062f \u0627\u0632 \u0633\u0631\u0639\u062a \u0648 \u0639\u0645\u0644\u06a9\u0631\u062f \u0622\u0646 \u0631\u0627\u0636\u06cc \u062a\u0631 \u0647\u0633\u062a\u0646\u062f \u0648 \u062a\u0631\u062c\u06cc\u062d \u0645\u06cc\u062f\u0647\u0646\u062f \u06a9\u0647 \u062f\u0631 \u0645\u062d\u06cc\u0637 \u0647\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0634\u062f\u0647 \u0641\u0639\u0627\u0644\u06cc\u062a \u0648 \u062e\u0631\u06cc\u062f \u06a9\u0646\u0646\u062f.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06cc\u06a9 \u0627\u0645\u0631 \u0645\u0647\u0645 \u0648 \u0636\u0631\u0648\u0631\u06cc \u0627\u0633\u062a.\u00a0 \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0642\u0627\u0644\u0647 \u0628\u0647 \u0628\u0631\u0631\u0633\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0648 \u0631\u0648\u0634 \u0647\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0622\u0646 \u0645\u06cc \u067e\u0631\u062f\u0627\u0632\u06cc\u0645. \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (JS) \u06cc\u06a9\u06cc \u0627\u0632 \u0631\u0627\u06cc\u062c \u062a\u0631\u06cc\u0646 \u0648 \u0645\u062d\u0628\u0648\u0628 \u062a\u0631\u06cc\u0646 \u0632\u0628\u0627\u0646 \u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0627\u0632 \u0622\u0646 \u0645\u0639\u0645\u0648\u0644\u0627 \u0628\u0631\u0627\u06cc \u062a\u0648\u0633\u0639\u0647 \u0628\u0631\u0646\u0627\u0645\u0647 \u0647\u0627\u06cc \u062a\u062d\u062a \u0648\u0628 \u0648 \u0645\u0648\u0628\u0627\u06cc\u0644 &hellip;<\/p>\n","protected":false},"author":4,"featured_media":2290,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[73],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.4 (Yoast SEO v18.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0633\u0631\u0639\u062a \u0639\u0645\u0644\u06a9\u0631\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a - JS | \u0622\u0645\u0648\u0632\u0634 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