{"id":23946,"date":"2023-05-19T19:51:41","date_gmt":"2023-05-19T16:21:41","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/how-react-preserve-and-reset-state-38la\/"},"modified":"2023-05-19T19:51:41","modified_gmt":"2023-05-19T16:21:41","slug":"how-react-preserve-and-reset-state-38la","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/how-react-preserve-and-reset-state-38la\/","title":{"rendered":"\u0646\u062d\u0648\u0647 \u0648\u0627\u06a9\u0646\u0634 \u0648\u0636\u0639\u06cc\u062a \u062d\u0641\u0638 \u0648 \u062a\u0646\u0638\u06cc\u0645 \u0645\u062c\u062f\u062f"},"content":{"rendered":"<div data-article-id=\"1473429\" id=\"article-body\">\n<p>\u062d\u0627\u0644\u062a \u0628\u06cc\u0646 \u0627\u062c\u0632\u0627\u0621 \u062c\u062f\u0627 \u0634\u062f\u0647 \u0627\u0633\u062a.  React \u0628\u0631 \u0627\u0633\u0627\u0633 \u062c\u0627\u06cc\u06af\u0627\u0647 \u0622\u0646\u0647\u0627 \u062f\u0631 \u062f\u0631\u062e\u062a UI\u060c \u0648\u0636\u0639\u06cc\u062a \u0628\u0647 \u06a9\u062f\u0627\u0645 \u0645\u0624\u0644\u0641\u0647 \u062a\u0639\u0644\u0642 \u062f\u0627\u0631\u062f.  \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0632\u0645\u0627\u0646 \u062d\u0641\u0638 \u062d\u0627\u0644\u062a \u0648 \u0632\u0645\u0627\u0646 \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u0628\u06cc\u0646 \u0631\u0646\u062f\u0631\u0647\u0627\u06cc \u0645\u062c\u062f\u062f \u0631\u0627 \u06a9\u0646\u062a\u0631\u0644 \u06a9\u0646\u06cc\u062f.<\/p>\n<p><strong>\u062f\u0631\u062e\u062a \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc<\/strong><br \/>\u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627 \u0627\u0632 \u0633\u0627\u062e\u062a\u0627\u0631\u0647\u0627\u06cc \u062f\u0631\u062e\u062a\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0645\u062f\u0644\u200c\u0633\u0627\u0632\u06cc \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f.  DOM \u0646\u0634\u0627\u0646 \u062f\u0647\u0646\u062f\u0647 \u0639\u0646\u0627\u0635\u0631 HTML \u0627\u0633\u062a\u060c CSSOM \u0647\u0645\u06cc\u0646 \u06a9\u0627\u0631 \u0631\u0627 \u0628\u0631\u0627\u06cc CSS \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u062f.  \u062d\u062a\u06cc \u06cc\u06a9 \u062f\u0631\u062e\u062a \u062f\u0633\u062a\u0631\u0633\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f!<\/p>\n<p>React \u0647\u0645\u0686\u0646\u06cc\u0646 \u0627\u0632 \u0633\u0627\u062e\u062a\u0627\u0631\u0647\u0627\u06cc \u062f\u0631\u062e\u062a\u06cc \u0628\u0631\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u0648 \u0645\u062f\u0644\u200c\u0633\u0627\u0632\u06cc \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0634\u0645\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f.  React \u062f\u0631\u062e\u062a \u0647\u0627\u06cc \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0631\u0627 \u0627\u0632 JSX \u0634\u0645\u0627 \u0645\u06cc \u0633\u0627\u0632\u062f.  \u0633\u067e\u0633 React DOM \u0639\u0646\u0627\u0635\u0631 DOM \u0645\u0631\u0648\u0631\u06af\u0631 \u0631\u0627 \u0628\u0631\u0627\u06cc \u0645\u0637\u0627\u0628\u0642\u062a \u0628\u0627 \u062f\u0631\u062e\u062a \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc \u06a9\u0646\u062f.  (React Native \u0627\u06cc\u0646 \u062f\u0631\u062e\u062a\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0627\u0635\u0631 \u0645\u062e\u0635\u0648\u0635 \u067e\u0644\u062a\u0641\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0648\u0628\u0627\u06cc\u0644 \u062a\u0631\u062c\u0645\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f.)<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/05\/\u0646\u062d\u0648\u0647-\u0648\u0627\u06a9\u0646\u0634-\u0648\u0636\u0639\u06cc\u062a-\u062d\u0641\u0638-\u0648-\u062a\u0646\u0638\u06cc\u0645-\u0645\u062c\u062f\u062f.png\" alt=\"\u0627\u0632 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0647\u0627\u060c React \u06cc\u06a9 \u062f\u0631\u062e\u062a \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 React DOM \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0646 DOM \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f\" loading=\"lazy\" width=\"800\" height=\"178\" title=\"\"><br \/>\u062a\u0648\u062c\u0647: \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631\u060c \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u06cc\u062f.<\/p>\n<p>\u0627\u0632 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0647\u0627\u060c React \u06cc\u06a9 \u062f\u0631\u062e\u062a \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 React DOM \u0627\u0632 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0631\u0646\u062f\u0631 \u06a9\u0631\u062f\u0646 DOM \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u06a9\u0646\u062f<\/p>\n<p><strong>\u0627\u06cc\u0627\u0644\u062a \u0628\u0647 \u0645\u0648\u0642\u0639\u06cc\u062a\u06cc \u062f\u0631 \u062f\u0631\u062e\u062a \u06af\u0631\u0647 \u062e\u0648\u0631\u062f\u0647 \u0627\u0633\u062a<\/strong><br \/>\u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u0628\u0647 \u06cc\u06a9 \u062d\u0627\u0644\u062a \u062c\u0632\u0621 \u0645\u06cc \u062f\u0647\u06cc\u062f\u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0641\u06a9\u0631 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u062d\u0627\u0644\u062a \u062f\u0631 \u062f\u0627\u062e\u0644 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a &#8220;\u0632\u0646\u062f\u06af\u06cc \u0645\u06cc \u06a9\u0646\u062f&#8221;.  \u0627\u0645\u0627 \u062f\u0648\u0644\u062a \u062f\u0631 \u0648\u0627\u0642\u0639 \u062f\u0631 \u062f\u0627\u062e\u0644 React \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0645\u06cc \u0634\u0648\u062f.  React \u0647\u0631 \u0628\u062e\u0634 \u0627\u0632 \u062d\u0627\u0644\u062a\u06cc \u0631\u0627 \u06a9\u0647 \u0646\u06af\u0647 \u0645\u06cc\u200c\u062f\u0627\u0631\u062f \u0628\u0627 \u0645\u0648\u0644\u0641\u0647 \u0635\u062d\u06cc\u062d \u062f\u0631 \u062c\u0627\u06cc\u06cc \u06a9\u0647 \u0622\u0646 \u062c\u0632\u0621 \u062f\u0631 \u062f\u0631\u062e\u062a UI \u0642\u0631\u0627\u0631 \u062f\u0627\u0631\u062f \u0645\u0631\u062a\u0628\u0637 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n<p>\u0628\u06cc\u0627\u06cc\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0628\u0627 \u06a9\u0645\u06a9 \u06cc\u06a9 \u0645\u062b\u0627\u0644 \u0628\u0628\u06cc\u0646\u06cc\u0645.  \u0641\u0631\u0636 \u06a9\u0646\u06cc\u062f\u060c \u06cc\u06a9 \u062f\u0627\u0631\u06cc\u0645 <code>&lt;Counter \/&gt;<\/code> \u062a\u06af JSX\u060c \u0627\u0645\u0627 \u062f\u0631 \u062f\u0648 \u0645\u0648\u0642\u0639\u06cc\u062a \u0645\u062e\u062a\u0644\u0641 \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u0634\u0648\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>import { useState } from 'react';\n\nexport default function App() {\n  const counter = &lt;Counter \/&gt;;\n  return (\n    &lt;div&gt;\n      {counter}\n      {counter}\n    &lt;\/div&gt;\n  );\n}\n\nfunction Counter() {\n  const [score, setScore] = useState(0);\n  const [hover, setHover] = useState(false);\n\n  let className=\"counter\";\n  if (hover) {\n    className += ' hover';\n  }\n\n  return (\n    &lt;div\n      className={className}\n      onPointerEnter={() =&gt; setHover(true)}\n      onPointerLeave={() =&gt; setHover(false)}\n    &gt;\n      &lt;h1&gt;{score}&lt;\/h1&gt;\n      &lt;button onClick={() =&gt; setScore(score + 1)}&gt;\n        Add one\n      &lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n}\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<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/05\/1684513300_430_\u0646\u062d\u0648\u0647-\u0648\u0627\u06a9\u0646\u0634-\u0648\u0636\u0639\u06cc\u062a-\u062d\u0641\u0638-\u0648-\u062a\u0646\u0638\u06cc\u0645-\u0645\u062c\u062f\u062f.png\" alt=\"\u062f\u0631\u062e\u062a \u0648\u0627\u06a9\u0646\u0634\" loading=\"lazy\" width=\"640\" height=\"402\" title=\"\"><br \/>\u062a\u0648\u062c\u0647: \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631\u060c \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u06cc\u062f.<\/p>\n<p>\u0627\u06cc\u0646\u0647\u0627 \u062f\u0648 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0645\u062c\u0632\u0627 \u0647\u0633\u062a\u0646\u062f \u0632\u06cc\u0631\u0627 \u0647\u0631 \u06a9\u062f\u0627\u0645 \u062f\u0631 \u0645\u0648\u0642\u0639\u06cc\u062a \u062e\u0627\u0635 \u062e\u0648\u062f \u062f\u0631 \u062f\u0631\u062e\u062a \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc \u0634\u0648\u0646\u062f.  \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 React \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0644\u0627\u0632\u0645 \u0646\u06cc\u0633\u062a \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0648\u0642\u0639\u06cc\u062a \u0647\u0627 \u0641\u06a9\u0631 \u06a9\u0646\u06cc\u062f\u060c \u0627\u0645\u0627 \u062f\u0631\u06a9 \u0646\u062d\u0648\u0647 \u0639\u0645\u0644\u06a9\u0631\u062f \u0622\u0646 \u0645\u06cc \u062a\u0648\u0627\u0646\u062f \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f.<\/p>\n<p>\u062f\u0631 React\u060c \u0647\u0631 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0631\u0648\u06cc \u0635\u0641\u062d\u0647 \u062f\u0627\u0631\u0627\u06cc \u062d\u0627\u0644\u062a \u06a9\u0627\u0645\u0644\u0627 \u0627\u06cc\u0632\u0648\u0644\u0647 \u0627\u0633\u062a.  \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644\u060c \u0627\u06af\u0631 \u062f\u0648 \u0645\u0648\u0644\u0641\u0647 Counter \u0631\u0627 \u062f\u0631 \u06a9\u0646\u0627\u0631 \u06cc\u06a9\u062f\u06cc\u06af\u0631 \u0631\u0646\u062f\u0631 \u06a9\u0646\u06cc\u062f\u060c \u0647\u0631 \u06a9\u062f\u0627\u0645 \u0627\u0632 \u0622\u0646\u0647\u0627 \u062d\u0627\u0644\u062a \u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u0644\u060c \u0627\u0645\u062a\u06cc\u0627\u0632 \u0648 \u0634\u0646\u0627\u0648\u0631 \u062e\u0648\u062f \u0631\u0627 \u062e\u0648\u0627\u0647\u0646\u062f \u062f\u0627\u0634\u062a.<\/p>\n<p>\u06a9\u062f \u0631\u0627 \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u062f \u0648 \u0631\u0648\u06cc \u0647\u0631 \u062f\u0648 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u06a9\u0644\u06cc\u06a9 \u06a9\u0646\u06cc\u062f \u0648 \u0645\u062a\u0648\u062c\u0647 \u0634\u0648\u06cc\u062f \u06a9\u0647 \u0631\u0648\u06cc \u06cc\u06a9\u062f\u06cc\u06af\u0631 \u062a\u0623\u062b\u06cc\u0631 \u0646\u0645\u06cc \u06af\u0630\u0627\u0631\u0646\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>import { useState } from 'react';\n\nexport default function App() {\n  return (\n    &lt;div&gt;\n      &lt;Counter \/&gt;\n      &lt;Counter \/&gt;\n    &lt;\/div&gt;\n  );\n}\n\nfunction Counter() {\n  const [score, setScore] = useState(0);\n  const [hover, setHover] = useState(false);\n\n  let className=\"counter\";\n  if (hover) {\n    className += ' hover';\n  }\n\n  return (\n    &lt;div\n      className={className}\n      onPointerEnter={() =&gt; setHover(true)}\n      onPointerLeave={() =&gt; setHover(false)}\n    &gt;\n      &lt;h1&gt;{score}&lt;\/h1&gt;\n      &lt;button onClick={() =&gt; setScore(score + 1)}&gt;\n        Add one\n      &lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n}\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<p>\u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u0645\u06cc \u0628\u06cc\u0646\u06cc\u062f\u060c \u0647\u0646\u06af\u0627\u0645\u06cc \u06a9\u0647 \u06cc\u06a9 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc \u0634\u0648\u062f\u060c \u0641\u0642\u0637 \u0648\u0636\u0639\u06cc\u062a \u0622\u0646 \u062c\u0632\u0621 \u0628\u0647 \u0631\u0648\u0632 \u0645\u06cc \u0634\u0648\u062f:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/05\/1684513301_382_\u0646\u062d\u0648\u0647-\u0648\u0627\u06a9\u0646\u0634-\u0648\u0636\u0639\u06cc\u062a-\u062d\u0641\u0638-\u0648-\u062a\u0646\u0638\u06cc\u0645-\u0645\u062c\u062f\u062f.png\" alt=\"\u0648\u0636\u0639\u06cc\u062a \u0628\u0647 \u0631\u0648\u0632 \u0631\u0633\u0627\u0646\u06cc\" loading=\"lazy\" width=\"640\" height=\"360\" title=\"\"><br \/>\u062a\u0648\u062c\u0647: \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631\u060c \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u06cc\u062f.<\/p>\n<p>React \u0648\u0636\u0639\u06cc\u062a \u0631\u0627 \u062a\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0647\u0645\u0627\u0646 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u0631\u0627 \u062f\u0631 \u0647\u0645\u0627\u0646 \u0645\u0648\u0642\u0639\u06cc\u062a \u0631\u0646\u062f\u0631 \u06a9\u0646\u06cc\u062f\u060c \u062d\u0641\u0638 \u0645\u06cc \u06a9\u0646\u062f.  \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0627\u06cc\u0646\u060c \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u06cc\u062f\u060c \u0633\u067e\u0633 \u0628\u0627 \u0628\u0631\u062f\u0627\u0634\u062a\u0646 \u062a\u06cc\u06a9 \u06af\u0632\u06cc\u0646\u0647 \u201cRender the counter\u201d \u0622\u0646 \u0631\u0627 \u0628\u0631\u062f\u0627\u0631\u06cc\u062f \u0648 \u0633\u067e\u0633 \u0628\u0627 \u0639\u0644\u0627\u0645\u062a \u0632\u062f\u0646 \u0645\u062c\u062f\u062f \u0622\u0646 \u0631\u0627 \u062f\u0648\u0628\u0627\u0631\u0647 \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f:<\/p>\n<div class=\"highlight js-code-highlight\">\n<pre class=\"highlight plaintext\"><code>import { useState } from 'react';\n\nexport default function App() {\n  const [showB, setShowB] = useState(true);\n  return (\n    &lt;div&gt;\n      {showB &amp;&amp; &lt;Counter \/&gt;} \n      &lt;label&gt;\n        &lt;input\n          type=\"checkbox\"\n          checked={showB}\n          onChange={e =&gt; {\n            setShowB(e.target.checked)\n          }}\n        \/&gt;\n        Render the counter\n      &lt;\/label&gt;\n    &lt;\/div&gt;\n  );\n}\n\nfunction Counter() {\n  const [score, setScore] = useState(0);\n  const [hover, setHover] = useState(false);\n\n  let className=\"counter\";\n  if (hover) {\n    className += ' hover';\n  }\n\n  return (\n    &lt;div\n      className={className}\n      onPointerEnter={() =&gt; setHover(true)}\n      onPointerLeave={() =&gt; setHover(false)}\n    &gt;\n      &lt;h1&gt;{score}&lt;\/h1&gt;\n      &lt;button onClick={() =&gt; setScore(score + 1)}&gt;\n        Add one\n      &lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n}\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<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/05\/1684513301_847_\u0646\u062d\u0648\u0647-\u0648\u0627\u06a9\u0646\u0634-\u0648\u0636\u0639\u06cc\u062a-\u062d\u0641\u0638-\u0648-\u062a\u0646\u0638\u06cc\u0645-\u0645\u062c\u062f\u062f.png\" alt=\"\u062d\u0630\u0641 \u06cc\u06a9 \u062c\u0632\u0621\" loading=\"lazy\" width=\"640\" height=\"384\" title=\"\"><br \/>\u062a\u0648\u062c\u0647: \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631\u060c \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u06cc\u062f.<\/p>\n<p>\u0648\u0642\u062a\u06cc \u062a\u06cc\u06a9 &#8220;Render the counter&#8221; \u0631\u0627 \u0628\u0632\u0646\u06cc\u062f\u060c \u06cc\u06a9 \u0634\u0645\u0627\u0631\u0646\u062f\u0647 \u062c\u062f\u06cc\u062f \u0648 \u0648\u0636\u0639\u06cc\u062a \u0622\u0646 \u0627\u0632 \u0627\u0628\u062a\u062f\u0627 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0645\u06cc \u0634\u0648\u062f (\u0627\u0645\u062a\u06cc\u0627\u0632 = 0) \u0648 \u0628\u0647 DOM \u0627\u0636\u0627\u0641\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/nabfollower.com\/blog\/wp-content\/uploads\/2023\/05\/1684513301_506_\u0646\u062d\u0648\u0647-\u0648\u0627\u06a9\u0646\u0634-\u0648\u0636\u0639\u06cc\u062a-\u062d\u0641\u0638-\u0648-\u062a\u0646\u0638\u06cc\u0645-\u0645\u062c\u062f\u062f.png\" alt=\"\u0627\u0636\u0627\u0641\u0647 \u06a9\u0631\u062f\u0646 \u06cc\u06a9 \u062c\u0632\u0621\" loading=\"lazy\" width=\"640\" height=\"330\" title=\"\"><\/p>\n<p>\u062a\u0648\u062c\u0647: \u0628\u0631\u0627\u06cc \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062f\u0631\u06a9 \u0628\u0647\u062a\u0631\u060c \u062a\u0635\u0648\u06cc\u0631 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u06cc\u062f.<br \/>React \u0648\u0636\u0639\u06cc\u062a \u06cc\u06a9 \u062c\u0632\u0621 \u0631\u0627 \u062a\u0627 \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u062f\u0631 \u0645\u0648\u0642\u0639\u06cc\u062a \u062e\u0648\u062f \u062f\u0631 \u062f\u0631\u062e\u062a UI \u0631\u0646\u062f\u0631 \u0645\u06cc \u0634\u0648\u062f \u062d\u0641\u0638 \u0645\u06cc \u06a9\u0646\u062f.  \u0627\u06af\u0631 \u062d\u0630\u0641 \u0634\u0648\u062f\u060c \u06cc\u0627 \u06a9\u0627\u0645\u067e\u0648\u0646\u0646\u062a \u062f\u06cc\u06af\u0631\u06cc \u062f\u0631 \u0647\u0645\u0627\u0646 \u0645\u0648\u0642\u0639\u06cc\u062a \u0631\u0646\u062f\u0631 \u0634\u0648\u062f\u060c React \u062d\u0627\u0644\u062a \u0622\u0646 \u0631\u0627 \u06a9\u0646\u0627\u0631 \u0645\u06cc\u200c\u06af\u0630\u0627\u0631\u062f.<\/p>\n<p>\u0645\u0646\u0628\u0639: https:\/\/react.dev\/learn\/preserving-and-resetting-state<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u062d\u0627\u0644\u062a \u0628\u06cc\u0646 \u0627\u062c\u0632\u0627\u0621 \u062c\u062f\u0627 \u0634\u062f\u0647 \u0627\u0633\u062a. React \u0628\u0631 \u0627\u0633\u0627\u0633 \u062c\u0627\u06cc\u06af\u0627\u0647 \u0622\u0646\u0647\u0627 \u062f\u0631 \u062f\u0631\u062e\u062a UI\u060c \u0648\u0636\u0639\u06cc\u062a \u0628\u0647 \u06a9\u062f\u0627\u0645 \u0645\u0624\u0644\u0641\u0647 \u062a\u0639\u0644\u0642 \u062f\u0627\u0631\u062f. \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0632\u0645\u0627\u0646 \u062d\u0641\u0638 \u062d\u0627\u0644\u062a \u0648 \u0632\u0645\u0627\u0646 \u0628\u0627\u0632\u0646\u0634\u0627\u0646\u06cc \u0628\u06cc\u0646 \u0631\u0646\u062f\u0631\u0647\u0627\u06cc \u0645\u062c\u062f\u062f \u0631\u0627 \u06a9\u0646\u062a\u0631\u0644 \u06a9\u0646\u06cc\u062f. \u062f\u0631\u062e\u062a \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc\u0645\u0631\u0648\u0631\u06af\u0631\u0647\u0627 \u0627\u0632 \u0633\u0627\u062e\u062a\u0627\u0631\u0647\u0627\u06cc \u062f\u0631\u062e\u062a\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u0645\u062f\u0644\u200c\u0633\u0627\u0632\u06cc \u0631\u0627\u0628\u0637 \u06a9\u0627\u0631\u0628\u0631\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f. DOM \u0646\u0634\u0627\u0646 \u062f\u0647\u0646\u062f\u0647 \u0639\u0646\u0627\u0635\u0631 HTML \u0627\u0633\u062a\u060c CSSOM \u0647\u0645\u06cc\u0646 \u06a9\u0627\u0631 &hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"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-23946","post","type-post","status-publish","format-standard","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/23946","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=23946"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/23946\/revisions"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=23946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=23946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=23946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}