{"id":78310,"date":"2024-09-28T13:20:49","date_gmt":"2024-09-28T09:50:49","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/"},"modified":"2024-09-28T13:20:49","modified_gmt":"2024-09-28T09:50:49","slug":"usecallback-hook-explained-2450","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/","title":{"rendered":"useCallback Hook \u062a\u0648\u0636\u06cc\u062d \u062f\u0627\u062f\u0647 \u0634\u062f &#8211; \u0627\u0646\u062c\u0645\u0646 DEV"},"content":{"rendered":"<p>Summarize this content to 400 words in Persian Lang<br \/>\n            \u0631\u0627 useCallback hook \u062f\u0631 React \u06cc\u06a9 \u0627\u0628\u0632\u0627\u0631 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0627 \u062d\u0627\u0641\u0638\u0647\u200c\u06af\u0630\u0627\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0645\u062c\u062f\u062f \u063a\u06cc\u0631\u0636\u0631\u0648\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u062f\u0631 \u0647\u0631 \u0631\u0646\u062f\u0631 \u06a9\u0645\u06a9 \u0645\u06cc\u200c\u06a9\u0646\u062f\u060c \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u0627\u0631\u0633\u0627\u0644 \u062a\u0645\u0627\u0633\u200c\u0647\u0627\u06cc \u0628\u0631\u06af\u0634\u062a\u06cc \u0628\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f\u06cc \u06a9\u0647 \u0628\u0647 \u0628\u0631\u0627\u0628\u0631\u06cc \u0645\u0631\u062c\u0639 \u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0631\u0646\u062f\u0631 \u0645\u062c\u062f\u062f \u0645\u062a\u06a9\u06cc \u0647\u0633\u062a\u0646\u062f\u060c \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f.<\/p>\n<p>  \u0646\u062d\u0648 \u067e\u0627\u06cc\u0647<\/p>\n<p>const memoizedCallback = useCallback(<br \/>\n  () =&gt; {<br \/>\n    \/\/ your function logic here<br \/>\n  },<br \/>\n  [dependencies]\n);<\/p>\n<p>    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n<p>    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n<p>  \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc<\/p>\n<p>\u062a\u0627\u0628\u0639: \u0627\u0648\u0644\u06cc\u0646 \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u062a\u0627\u0628\u0639\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0628\u0647 \u062e\u0627\u0637\u0631 \u0628\u0633\u067e\u0627\u0631\u06cc\u062f.<\/p>\n<p>\u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627: \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u062f\u0648\u0645 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0627\u0633\u062a. \u062a\u0627\u0628\u0639 \u0630\u062e\u06cc\u0631\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0647\u0627 \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u06cc\u06a9\u06cc \u0627\u0632 \u0627\u06cc\u0646 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f.<\/p>\n<p>  \u0686\u06af\u0648\u0646\u0647 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f<\/p>\n<p>\u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u062c\u0632\u0621 \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u06af\u0631 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0627\u0632 \u0622\u062e\u0631\u06cc\u0646 \u0631\u0646\u062f\u0631 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u06a9\u0631\u062f\u0647 \u0628\u0627\u0634\u0646\u062f\u060c useCallback \u0628\u0647 \u062c\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062c\u062f\u06cc\u062f\u060c \u062a\u0627\u0628\u0639\u06cc \u06a9\u0647 \u0642\u0628\u0644\u0627\u064b \u0628\u0647 \u062e\u0627\u0637\u0631 \u0633\u067e\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.<br \/>\n\u0627\u06af\u0631 \u0647\u0631 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0631\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u062a\u0627\u0628\u0639 \u0630\u062e\u06cc\u0631\u0647\u200c\u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n<p>  \u0645\u062b\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<\/p>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0639\u0645\u0644\u06cc \u0628\u0631\u0627\u06cc \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0646 \u0686\u06af\u0648\u0646\u06af\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f useCallback \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0633\u062a:<\/p>\n<p>import React, { useState, useCallback } from &#8216;react&#8217;;<\/p>\n<p>const Counter = () =&gt; {<br \/>\n  const [count, setCount] = useState(0);<br \/>\n  const [color, setColor] = useState(&#8216;blue&#8217;);<\/p>\n<p>  \/\/ This function is memoized<br \/>\n  const increment = useCallback(() =&gt; {<br \/>\n    setCount(c =&gt; c + 1);<br \/>\n  }, []); \/\/ No dependencies, will never change<\/p>\n<p>  \/\/ This function will change if `color` changes<br \/>\n  const changeColor = useCallback(() =&gt; {<br \/>\n    setColor(color === &#8216;blue&#8217; ? &#8216;red&#8217; : &#8216;blue&#8217;);<br \/>\n  }, [color]);<\/p>\n<p>  return (<br \/>\n    &lt;div&gt;<br \/>\n      &lt;h1 style={{ color }}&gt;Count: {count}&lt;\/h1&gt;<br \/>\n      &lt;button onClick={increment}&gt;Increment&lt;\/button&gt;<br \/>\n      &lt;button onClick={changeColor}&gt;Change Color&lt;\/button&gt;<br \/>\n    &lt;\/div&gt;<br \/>\n  );<br \/>\n};<\/p>\n<p>    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n<p>    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n<p>  \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f<\/p>\n<p>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 useCallback \u0632\u0645\u0627\u0646\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f \u06a9\u0647:<\/p>\n<p>\u0627\u0631\u0633\u0627\u0644 \u062a\u0645\u0627\u0633 \u067e\u0627\u0633\u062e \u0628\u0647 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0648\u062f\u06a9: \u062f\u0631 \u0635\u0648\u0631\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u062c\u0632\u0627\u06cc \u0641\u0631\u0632\u0646\u062f React.memo \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0631\u0646\u062f\u0631\u060c \u0627\u0631\u0633\u0627\u0644 \u0641\u0631\u0627\u062e\u0648\u0627\u0646 \u0647\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u0631\u0646\u062f\u0631\u0647\u0627\u06cc \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u062f.<\/p>\n<p>const ChildComponent = React.memo(({ onClick }) =&gt; {<br \/>\n  console.log(&#8220;ChildComponent rendered&#8221;);<br \/>\n  return &lt;button onClick={onClick}&gt;Click Me&lt;\/button&gt;;<br \/>\n});<\/p>\n<p>    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/p>\n<p>    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/p>\n<p>\u0631\u0633\u06cc\u062f\u06af\u06cc \u0628\u0647 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627: \u0647\u0646\u06af\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062a\u0631\u0644\u200c\u06a9\u0646\u0646\u062f\u0647\u200c\u0647\u0627\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f \u06a9\u0647 \u0628\u0647 \u0648\u0636\u0639\u06cc\u062a \u0645\u0624\u0644\u0641\u0647 \u06cc\u0627 \u067e\u0631\u0648\u067e\u0648\u0632\u0627\u0644\u200c\u0647\u0627 \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u0646\u062f\u060c \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 useCallback \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0627\u0632 \u0647\u0645\u0627\u0646 \u0645\u0631\u062c\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u0645\u06af\u0631 \u0627\u06cc\u0646\u06a9\u0647 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u0646\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u062f.<\/p>\n<p>  \u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<\/p>\n<p>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f useCallback \u0647\u0646\u06af\u0627\u0645 \u0627\u0631\u0633\u0627\u0644 \u0641\u0631\u0627\u062e\u0648\u0627\u0646 \u0628\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f \u0628\u0647\u06cc\u0646\u0647\u200c\u0634\u062f\u0647 \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0646 \u0628\u0647 \u0628\u0631\u0627\u0628\u0631\u06cc \u0645\u0631\u062c\u0639 \u0645\u062a\u06a9\u06cc \u0647\u0633\u062a\u0646\u062f (\u0645\u0627\u0646\u0646\u062f \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0634\u062f\u0647 \u062f\u0631 React.memo).<br \/>\n\u0627\u0632 \u0645\u0635\u0631\u0641 \u062e\u0648\u062f\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f useCallback \u0628\u0647 \u0637\u0648\u0631 \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc\u060c \u0632\u06cc\u0631\u0627 \u0645\u0642\u062f\u0627\u0631\u06cc \u0633\u0631\u0628\u0627\u0631 \u0628\u0631\u0627\u06cc \u062d\u0641\u0638 \u06a9\u0631\u062f\u0646 \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0628\u0627 \u0631\u0646\u062f\u0631 \u0645\u062c\u062f\u062f \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647 \u0628\u0633\u06cc\u0627\u0631 \u0633\u0648\u062f\u0645\u0646\u062f \u0627\u0633\u062a.<\/p>\n<p>  \u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<\/p>\n<p>\u0631\u0627 useCallback hook \u0627\u0628\u0632\u0627\u0631\u06cc \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0647\u0627\u06cc React \u0628\u0627 \u062d\u0641\u0638 \u06a9\u0631\u062f\u0646 \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a. \u0628\u0627 \u06a9\u0646\u062a\u0631\u0644 \u0632\u0645\u0627\u0646 \u0628\u0627\u0632\u0622\u0641\u0631\u06cc\u0646\u06cc \u062a\u0648\u0627\u0628\u0639\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0645\u0634\u06a9\u0644\u0627\u062a \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u062f\u0631 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u060c \u0628\u0647\u200c\u0648\u06cc\u0698\u0647 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0628\u0627 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f \u062a\u0639\u0627\u0645\u0644 \u062f\u0627\u0631\u0646\u062f\u060c \u06a9\u0645\u06a9 \u06a9\u0631\u062f. \u0647\u0645\u06cc\u0634\u0647 \u062f\u0631 \u0646\u0638\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0645\u0632\u0627\u06cc\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u06cc\u0634\u062a\u0631 \u0627\u0632 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u0627\u062c\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0642\u0644\u0627\u0628 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631.<\/p>\n<div data-article-id=\"2018257\" id=\"article-body\">\n<p>\u0631\u0627 <code>useCallback<\/code> hook \u062f\u0631 React \u06cc\u06a9 \u0627\u0628\u0632\u0627\u0631 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0627 \u062d\u0627\u0641\u0638\u0647\u200c\u06af\u0630\u0627\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0645\u062c\u062f\u062f \u063a\u06cc\u0631\u0636\u0631\u0648\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u062f\u0631 \u0647\u0631 \u0631\u0646\u062f\u0631 \u06a9\u0645\u06a9 \u0645\u06cc\u200c\u06a9\u0646\u062f\u060c \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u0627\u0631\u0633\u0627\u0644 \u062a\u0645\u0627\u0633\u200c\u0647\u0627\u06cc \u0628\u0631\u06af\u0634\u062a\u06cc \u0628\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f\u06cc \u06a9\u0647 \u0628\u0647 \u0628\u0631\u0627\u0628\u0631\u06cc \u0645\u0631\u062c\u0639 \u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0631\u0646\u062f\u0631 \u0645\u062c\u062f\u062f \u0645\u062a\u06a9\u06cc \u0647\u0633\u062a\u0646\u062f\u060c \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter-rtl ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D9%86%D8%AD%D9%88_%D9%BE%D8%A7%DB%8C%D9%87\" >\u0646\u062d\u0648 \u067e\u0627\u06cc\u0647<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D9%BE%D8%A7%D8%B1%D8%A7%D9%85%D8%AA%D8%B1%D9%87%D8%A7%DB%8C_%DA%A9%D9%84%DB%8C%D8%AF%DB%8C\" >\u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%DA%86%DA%AF%D9%88%D9%86%D9%87_%DA%A9%D8%A7%D8%B1_%D9%85%DB%8C_%DA%A9%D9%86%D8%AF\" >\u0686\u06af\u0648\u0646\u0647 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D9%85%D8%AB%D8%A7%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\" >\u0645\u062b\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D8%A8%D9%87%DB%8C%D9%86%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF\" >\u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D8%B2%D9%85%D8%A7%D9%86_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\" >\u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nabfollower.com\/blog\/usecallback-hook-explained-2450\/#%D9%86%D8%AA%DB%8C%D8%AC%D9%87_%DA%AF%DB%8C%D8%B1%DB%8C\" >\u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D9%86%D8%AD%D9%88_%D9%BE%D8%A7%DB%8C%D9%87\"><\/span>\n<p>  \u0646\u062d\u0648 \u067e\u0627\u06cc\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">memoizedCallback<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useCallback<\/span><span class=\"p\">(<\/span>\n  <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"c1\">\/\/ your function logic here<\/span>\n  <span class=\"p\">},<\/span>\n  <span class=\"p\">[<\/span><span class=\"nx\">dependencies<\/span><span class=\"p\">]<\/span>\n<span class=\"p\">);<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D9%BE%D8%A7%D8%B1%D8%A7%D9%85%D8%AA%D8%B1%D9%87%D8%A7%DB%8C_%DA%A9%D9%84%DB%8C%D8%AF%DB%8C\"><\/span>\n<p>  \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ol>\n<li>\n<strong>\u062a\u0627\u0628\u0639<\/strong>: \u0627\u0648\u0644\u06cc\u0646 \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u062a\u0627\u0628\u0639\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc \u062e\u0648\u0627\u0647\u06cc\u062f \u0628\u0647 \u062e\u0627\u0637\u0631 \u0628\u0633\u067e\u0627\u0631\u06cc\u062f.<\/li>\n<li>\n<strong>\u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627<\/strong>: \u0622\u0631\u06af\u0648\u0645\u0627\u0646 \u062f\u0648\u0645 \u0622\u0631\u0627\u06cc\u0647 \u0627\u06cc \u0627\u0632 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0627\u0633\u062a. \u062a\u0627\u0628\u0639 \u0630\u062e\u06cc\u0631\u0647 \u0633\u0627\u0632\u06cc \u062a\u0646\u0647\u0627 \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u06cc\u06a9\u06cc \u0627\u0632 \u0627\u06cc\u0646 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"%DA%86%DA%AF%D9%88%D9%86%D9%87_%DA%A9%D8%A7%D8%B1_%D9%85%DB%8C_%DA%A9%D9%86%D8%AF\"><\/span>\n<p>  \u0686\u06af\u0648\u0646\u0647 \u06a9\u0627\u0631 \u0645\u06cc \u06a9\u0646\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u062c\u0632\u0621 \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u062f\u060c \u0627\u06af\u0631 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u0627\u0632 \u0622\u062e\u0631\u06cc\u0646 \u0631\u0646\u062f\u0631 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u06a9\u0631\u062f\u0647 \u0628\u0627\u0634\u0646\u062f\u060c <code>useCallback<\/code> \u0628\u0647 \u062c\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062c\u062f\u06cc\u062f\u060c \u062a\u0627\u0628\u0639\u06cc \u06a9\u0647 \u0642\u0628\u0644\u0627\u064b \u0628\u0647 \u062e\u0627\u0637\u0631 \u0633\u067e\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a \u0631\u0627 \u0628\u0631\u0645\u06cc \u06af\u0631\u062f\u0627\u0646\u062f.<\/li>\n<li>\u0627\u06af\u0631 \u0647\u0631 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0631\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u062a\u0627\u0628\u0639 \u0630\u062e\u06cc\u0631\u0647\u200c\u0633\u0627\u0632\u06cc \u0634\u062f\u0647 \u0628\u0647\u200c\u0631\u0648\u0632\u0631\u0633\u0627\u0646\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%D9%85%D8%AB%D8%A7%D9%84_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\"><\/span>\n<p>  \u0645\u062b\u0627\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0639\u0645\u0644\u06cc \u0628\u0631\u0627\u06cc \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0646 \u0686\u06af\u0648\u0646\u06af\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f <code>useCallback<\/code> \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0633\u062a:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"k\">import<\/span> <span class=\"nx\">React<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">useState<\/span><span class=\"p\">,<\/span> <span class=\"nx\">useCallback<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">react<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\n\n<span class=\"kd\">const<\/span> <span class=\"nx\">Counter<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">count<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setCount<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">color<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setColor<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"dl\">'<\/span><span class=\"s1\">blue<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n\n  <span class=\"c1\">\/\/ This function is memoized<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">increment<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useCallback<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setCount<\/span><span class=\"p\">(<\/span><span class=\"nx\">c<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">c<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">},<\/span> <span class=\"p\">[]);<\/span> <span class=\"c1\">\/\/ No dependencies, will never change<\/span>\n\n  <span class=\"c1\">\/\/ This function will change if `color` changes<\/span>\n  <span class=\"kd\">const<\/span> <span class=\"nx\">changeColor<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useCallback<\/span><span class=\"p\">(()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n    <span class=\"nf\">setColor<\/span><span class=\"p\">(<\/span><span class=\"nx\">color<\/span> <span class=\"o\">===<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">blue<\/span><span class=\"dl\">'<\/span> <span class=\"p\">?<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">red<\/span><span class=\"dl\">'<\/span> <span class=\"p\">:<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">blue<\/span><span class=\"dl\">'<\/span><span class=\"p\">);<\/span>\n  <span class=\"p\">},<\/span> <span class=\"p\">[<\/span><span class=\"nx\">color<\/span><span class=\"p\">]);<\/span>\n\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">div<\/span><span class=\"o\">&gt;<\/span>\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">h1<\/span> <span class=\"nx\">style<\/span><span class=\"o\">=<\/span><span class=\"p\">{{<\/span> <span class=\"nx\">color<\/span> <span class=\"p\">}}<\/span><span class=\"o\">&gt;<\/span><span class=\"na\">Count<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span><span class=\"nx\">count<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/h1<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">increment<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Increment<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>      <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">changeColor<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Change<\/span> <span class=\"nx\">Color<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button<\/span><span class=\"err\">&gt;\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/div<\/span><span class=\"err\">&gt;\n<\/span>  <span class=\"p\">);<\/span>\n<span class=\"p\">};<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"%D8%A8%D9%87%DB%8C%D9%86%D9%87_%D8%B3%D8%A7%D8%B2%DB%8C_%D8%B9%D9%85%D9%84%DA%A9%D8%B1%D8%AF\"><\/span>\n<p>  \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>useCallback<\/code> \u0632\u0645\u0627\u0646\u06cc \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f \u06a9\u0647:<\/p>\n<ul>\n<li>\n<strong>\u0627\u0631\u0633\u0627\u0644 \u062a\u0645\u0627\u0633 \u067e\u0627\u0633\u062e \u0628\u0647 \u0627\u062c\u0632\u0627\u06cc \u06a9\u0648\u062f\u06a9<\/strong>: \u062f\u0631 \u0635\u0648\u0631\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0627\u062c\u0632\u0627\u06cc \u0641\u0631\u0632\u0646\u062f <code>React.memo<\/code> \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647 \u0633\u0627\u0632\u06cc \u0631\u0646\u062f\u0631\u060c \u0627\u0631\u0633\u0627\u0644 \u0641\u0631\u0627\u062e\u0648\u0627\u0646 \u0647\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u0631\u0646\u062f\u0631\u0647\u0627\u06cc \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u062f.\n<\/li>\n<\/ul>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight javascript\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">ChildComponent<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nf\">memo<\/span><span class=\"p\">(({<\/span> <span class=\"nx\">onClick<\/span> <span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\n  <span class=\"nx\">console<\/span><span class=\"p\">.<\/span><span class=\"nf\">log<\/span><span class=\"p\">(<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">ChildComponent rendered<\/span><span class=\"dl\">\"<\/span><span class=\"p\">);<\/span>\n  <span class=\"k\">return<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">button<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">onClick<\/span><span class=\"p\">}<\/span><span class=\"o\">&gt;<\/span><span class=\"nx\">Click<\/span> <span class=\"nx\">Me<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/button&gt;<\/span><span class=\"err\">;\n<\/span><span class=\"p\">});<\/span>\n<\/code><\/pre>\n<div class=\"highlight__panel js-actions-panel\">\n<div class=\"highlight__panel-action js-fullscreen-code-action\">\n    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-on\"><title>\u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z\"\/>\n<\/svg><\/p>\n<p>    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" class=\"highlight-action crayons-icon highlight-action--fullscreen-off\"><title>\u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    <path d=\"M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z\"\/>\n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n<ul>\n<li>\n<strong>\u0631\u0633\u06cc\u062f\u06af\u06cc \u0628\u0647 \u0631\u0648\u06cc\u062f\u0627\u062f\u0647\u0627<\/strong>: \u0647\u0646\u06af\u0627\u0645 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u062a\u0631\u0644\u200c\u06a9\u0646\u0646\u062f\u0647\u200c\u0647\u0627\u06cc \u0631\u0648\u06cc\u062f\u0627\u062f \u06a9\u0647 \u0628\u0647 \u0648\u0636\u0639\u06cc\u062a \u0645\u0624\u0644\u0641\u0647 \u06cc\u0627 \u067e\u0631\u0648\u067e\u0648\u0632\u0627\u0644\u200c\u0647\u0627 \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u0646\u062f\u060c \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 <code>useCallback<\/code> \u062a\u0636\u0645\u06cc\u0646 \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0627\u0632 \u0647\u0645\u0627\u0646 \u0645\u0631\u062c\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f \u0645\u06af\u0631 \u0627\u06cc\u0646\u06a9\u0647 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u0646\u062f \u06a9\u0647 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0639\u0645\u0644\u06a9\u0631\u062f \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u062f.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%D8%B2%D9%85%D8%A7%D9%86_%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87\"><\/span>\n<p>  \u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0641\u0627\u062f\u0647<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f <code>useCallback<\/code> \u0647\u0646\u06af\u0627\u0645 \u0627\u0631\u0633\u0627\u0644 \u0641\u0631\u0627\u062e\u0648\u0627\u0646 \u0628\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f \u0628\u0647\u06cc\u0646\u0647\u200c\u0634\u062f\u0647 \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0646 \u0628\u0647 \u0628\u0631\u0627\u0628\u0631\u06cc \u0645\u0631\u062c\u0639 \u0645\u062a\u06a9\u06cc \u0647\u0633\u062a\u0646\u062f (\u0645\u0627\u0646\u0646\u062f \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0634\u062f\u0647 \u062f\u0631 <code>React.memo<\/code>).<\/li>\n<li>\u0627\u0632 \u0645\u0635\u0631\u0641 \u062e\u0648\u062f\u062f\u0627\u0631\u06cc \u06a9\u0646\u06cc\u062f <code>useCallback<\/code> \u0628\u0647 \u0637\u0648\u0631 \u063a\u06cc\u0631 \u0636\u0631\u0648\u0631\u06cc\u060c \u0632\u06cc\u0631\u0627 \u0645\u0642\u062f\u0627\u0631\u06cc \u0633\u0631\u0628\u0627\u0631 \u0628\u0631\u0627\u06cc \u062d\u0641\u0638 \u06a9\u0631\u062f\u0646 \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u062f\u0631 \u0627\u062c\u0632\u0627\u06cc \u067e\u06cc\u0686\u06cc\u062f\u0647 \u0628\u0627 \u0631\u0646\u062f\u0631 \u0645\u062c\u062f\u062f \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647 \u0628\u0633\u06cc\u0627\u0631 \u0633\u0648\u062f\u0645\u0646\u062f \u0627\u0633\u062a.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%D9%86%D8%AA%DB%8C%D8%AC%D9%87_%DA%AF%DB%8C%D8%B1%DB%8C\"><\/span>\n<p>  \u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<br \/>\n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0631\u0627 <code>useCallback<\/code> hook \u0627\u0628\u0632\u0627\u0631\u06cc \u0627\u0631\u0632\u0634\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0647\u0627\u06cc React \u0628\u0627 \u062d\u0641\u0638 \u06a9\u0631\u062f\u0646 \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a. \u0628\u0627 \u06a9\u0646\u062a\u0631\u0644 \u0632\u0645\u0627\u0646 \u0628\u0627\u0632\u0622\u0641\u0631\u06cc\u0646\u06cc \u062a\u0648\u0627\u0628\u0639\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0645\u0634\u06a9\u0644\u0627\u062a \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u062f\u0631 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u060c \u0628\u0647\u200c\u0648\u06cc\u0698\u0647 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0628\u0627 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f \u062a\u0639\u0627\u0645\u0644 \u062f\u0627\u0631\u0646\u062f\u060c \u06a9\u0645\u06a9 \u06a9\u0631\u062f. \u0647\u0645\u06cc\u0634\u0647 \u062f\u0631 \u0646\u0638\u0631 \u0628\u06af\u06cc\u0631\u06cc\u062f \u06a9\u0647 \u0622\u06cc\u0627 \u0645\u0632\u0627\u06cc\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u06cc\u0634\u062a\u0631 \u0627\u0632 \u067e\u06cc\u0686\u06cc\u062f\u06af\u06cc \u0627\u062c\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0642\u0644\u0627\u0628 \u0627\u0633\u062a \u06cc\u0627 \u062e\u06cc\u0631.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Summarize this content to 400 words in Persian Lang \u0631\u0627 useCallback hook \u062f\u0631 React \u06cc\u06a9 \u0627\u0628\u0632\u0627\u0631 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u0628\u0631\u0627\u06cc \u0628\u0647\u06cc\u0646\u0647\u200c\u0633\u0627\u0632\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f \u0628\u0627 \u062d\u0627\u0641\u0638\u0647\u200c\u06af\u0630\u0627\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u0647 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u0627\u06cc\u062c\u0627\u062f \u0645\u062c\u062f\u062f \u063a\u06cc\u0631\u0636\u0631\u0648\u0631\u06cc \u062a\u0648\u0627\u0628\u0639 \u062f\u0631 \u0647\u0631 \u0631\u0646\u062f\u0631 \u06a9\u0645\u06a9 \u0645\u06cc\u200c\u06a9\u0646\u062f\u060c \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0648\u06cc\u0698\u0647 \u0647\u0646\u06af\u0627\u0645 \u0627\u0631\u0633\u0627\u0644 \u062a\u0645\u0627\u0633\u200c\u0647\u0627\u06cc \u0628\u0631\u06af\u0634\u062a\u06cc \u0628\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0641\u0631\u0632\u0646\u062f\u06cc \u06a9\u0647 \u0628\u0647 \u0628\u0631\u0627\u0628\u0631\u06cc \u0645\u0631\u062c\u0639 \u0628\u0631\u0627\u06cc \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 &hellip;<\/p>\n","protected":false},"author":2,"featured_media":78311,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-78310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/78310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=78310"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/78310\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/78311"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=78310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=78310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=78310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}