{"id":31,"date":"2026-06-02T11:41:36","date_gmt":"2026-06-02T03:41:36","guid":{"rendered":"http:\/\/8.137.197.254\/?p=31"},"modified":"2026-06-04T16:01:50","modified_gmt":"2026-06-04T08:01:50","slug":"react%e5%85%a5%e9%97%a8%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/wanyi.art\/index.php\/2026\/06\/02\/react%e5%85%a5%e9%97%a8%e6%95%99%e7%a8%8b\/","title":{"rendered":"react\u5165\u95e8\u6559\u7a0b"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">1.React \u73af\u5883\u642d\u5efa<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1.1 \u4ec0\u4e48\u662f React\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">React \u662f<strong>\u7528\u4e8e\u6784\u5efa\u7528\u6237\u754c\u9762\u7684 JavaScript \u5e93<\/strong>\uff0c\u7531 Facebook\uff08Meta\uff09\u5f00\u53d1\u7ef4\u62a4\uff0c\u662f\u76ee\u524d\u524d\u7aef\u4e09\u5927\u4e3b\u6d41\u6846\u67b6\u4e4b\u4e00\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6838\u5fc3\u7279\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7ec4\u4ef6\u5316\u5f00\u53d1<\/strong>\uff1a\u9875\u9762\u62c6\u5206\u4e3a\u72ec\u7acb\u3001\u53ef\u590d\u7528\u7684\u7ec4\u4ef6\uff0c\u4ee3\u7801\u7ef4\u62a4\u6027\u6781\u5f3a<\/li>\n\n\n\n<li><strong>\u865a\u62df DOM<\/strong>\uff1a\u901a\u8fc7 JS \u6a21\u62df DOM \u7ed3\u6784\uff0cdiff \u7b97\u6cd5\u7cbe\u51c6\u66f4\u65b0\u9875\u9762\uff0c\u6027\u80fd\u4f18\u5f02<\/li>\n\n\n\n<li><strong>\u5355\u5411\u6570\u636e\u6d41<\/strong>\uff1a\u6570\u636e\u81ea\u4e0a\u800c\u4e0b\u6d41\u52a8\uff0c\u72b6\u6001\u53ef\u9884\u6d4b\uff0cbug \u66f4\u5c11<\/li>\n\n\n\n<li><strong>\u51fd\u6570\u7ec4\u4ef6 + Hooks<\/strong>\uff1a\u6452\u5f03\u590d\u6742\u7c7b\u7ec4\u4ef6\uff0c\u4ee3\u7801\u7b80\u6d01\u3001\u903b\u8f91\u590d\u7528\u65b9\u4fbf<\/li>\n\n\n\n<li><strong>\u751f\u6001\u5b8c\u5584<\/strong>\uff1a\u8def\u7531\u3001\u72b6\u6001\u7ba1\u7406\u3001UI \u7ec4\u4ef6\u5e93\u9f50\u5168\uff0c\u9002\u914d\u6240\u6709web\u9879\u76ee<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">1.2 \u5f00\u53d1\u73af\u5883\u51c6\u5907<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1.2.1 \u5b89\u88c5 Node.js<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">React \u9879\u76ee\u4f9d\u8d56 Node.js \u73af\u5883\uff0c\u5fc5\u987b\u63d0\u524d\u5b89\u88c5\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u5b98\u7f51\u4e0b\u8f7d\uff1ahttps:\/\/nodejs.org\/\uff08\u63a8\u8350 LTS \u7a33\u5b9a\u7248\uff09<\/li>\n\n\n\n<li>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u6253\u5f00\u7ec8\u7aef\u9a8c\u8bc1\uff1a<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>node -v\nnpm -v<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u51fa\u7248\u672c\u53f7\u5373\u5b89\u88c5\u6210\u529f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1.2.2 \u521b\u5efa React \u9879\u76ee\uff08\u5b98\u65b9\u63a8\u8350\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">React \u5b98\u65b9\u5185\u7f6e\u811a\u624b\u67b6 <code>create-react-app<\/code>\uff0c\u96f6\u914d\u7f6e\u5373\u53ef\u5feb\u901f\u642d\u5efa\u9879\u76ee\uff0c\u9002\u5408\u5165\u95e8\u5b66\u4e60\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ec8\u7aef\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u521b\u5efa\u9879\u76ee\uff0cmy-react-demo \u4e3a\u9879\u76ee\u540d\uff08\u81ea\u5b9a\u4e49\uff0c\u5c0f\u5199\u65e0\u7a7a\u683c\uff09\nnpx create-react-app my-react-demo\n\n# \u8fdb\u5165\u9879\u76ee\u6587\u4ef6\u5939\ncd my-react-demo\n\n# \u542f\u52a8\u9879\u76ee\nnpm start<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u542f\u52a8\u6210\u529f\u540e\uff0c\u6d4f\u89c8\u5668\u9ed8\u8ba4\u6253\u5f00\uff0c\u770b\u5230 React \u6b22\u8fce\u9875\u9762\u5373\u73af\u5883\u642d\u5efa\u5b8c\u6210\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.3 \u9879\u76ee\u76ee\u5f55\u6838\u5fc3\u6587\u4ef6\u89e3\u6790<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u521a\u521b\u5efa\u7684\u9879\u76ee\u6587\u4ef6\u8f83\u591a\uff0c\u53ea\u9700\u91cd\u70b9\u5173\u6ce8\u6838\u5fc3\u6587\u4ef6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>public\/index.html<\/code>\uff1a\u552f\u4e00\u5165\u53e3HTML\u6587\u4ef6\uff0c\u6574\u4e2aReact\u9879\u76ee\u6302\u8f7d\u5bb9\u5668<\/li>\n\n\n\n<li><code>src\/index.js<\/code>\uff1aJS\u5165\u53e3\u6587\u4ef6\uff0c\u6e32\u67d3\u6839\u7ec4\u4ef6\u3001\u6302\u8f7d\u5230\u9875\u9762<\/li>\n\n\n\n<li><code>src\/App.js<\/code>\uff1a\u9ed8\u8ba4\u6839\u7ec4\u4ef6\uff0c\u6211\u4eec\u4e3b\u8981\u7684\u5f00\u53d1\u6587\u4ef6<\/li>\n\n\n\n<li><code>src\/App.css<\/code>\uff1a\u6839\u7ec4\u4ef6\u6837\u5f0f\u6587\u4ef6<\/li>\n\n\n\n<li><code>package.json<\/code>\uff1a\u9879\u76ee\u914d\u7f6e\u3001\u4f9d\u8d56\u5305\u3001\u542f\u52a8\u547d\u4ee4\u914d\u7f6e<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">1.4 \u5220\u9664\u9ed8\u8ba4\u4ee3\u7801\uff0c\u5f00\u542f\u7b2c\u4e00\u4e2ademo<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">1. \u6e05\u7a7a <code>App.js<\/code>\uff0c\u5199\u5165\u57fa\u7840\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5bfc\u5165React\u6838\u5fc3\u5e93\nimport React from 'react';\n\n\/\/ \u5b9a\u4e49\u51fd\u6570\u7ec4\u4ef6\nfunction App() {\n  return (\n    &lt;div className=\"App\"&gt;\n      &lt;h1&gt;\u6211\u7684\u7b2c\u4e00\u4e2aReact\u9879\u76ee&lt;\/h1&gt;\n      &lt;p&gt;\u4ece\u96f6\u5b66\u4e60React\uff0c\u8fdb\u9636\u9ad8\u624b\uff01&lt;\/p&gt;\n    &lt;\/div&gt;\n  );\n}\n\n\/\/ \u5bfc\u51fa\u7ec4\u4ef6\nexport default App;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2. \u6e05\u7a7a <code>App.css<\/code> \u6240\u6709\u9ed8\u8ba4\u6837\u5f0f\uff0c\u81ea\u5b9a\u4e49\u6837\u5f0f\u5373\u53ef\u3002\u5237\u65b0\u9875\u9762\uff0c\u5373\u53ef\u770b\u5230\u81ea\u5b9a\u4e49\u9875\u9762\u5185\u5bb9\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u4e8c\u7ae0\uff1aReact \u6838\u5fc3\u8bed\u6cd5 JSX \u8be6\u89e3<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">2.1 JSX \u57fa\u7840\u8bed\u6cd5\u89c4\u5219\uff08\u5fc5\u8bb0\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1.1 \u57fa\u672c\u7ed3\u6784\u89c4\u5219<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSX \u5fc5\u987b\u6709<strong>\u552f\u4e00\u6839\u6807\u7b7e<\/strong>\uff08\u591a\u4e2a\u6807\u7b7e\u5fc5\u987b\u5305\u88f9\u5728\u4e00\u4e2a\u7236\u6807\u7b7e\u5185\uff09<\/li>\n\n\n\n<li>\u6807\u7b7e\u53ef\u4ee5\u5355\u6807\u7b7e\u95ed\u5408\uff08\u5982 &lt;img\/>\u3001&lt;input\/>\uff09<\/li>\n\n\n\n<li>\u652f\u6301\u591a\u884c\u3001\u5d4c\u5957\u6807\u7b7e\uff0c\u5199\u6cd5\u548c HTML \u51e0\u4e4e\u4e00\u81f4<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2.2 JSX \u4e0e HTML \u6838\u5fc3\u533a\u522b\uff08\u9ad8\u9891\u6613\u9519\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSX \u5c5e\u4e8e JS \u8bed\u6cd5\uff0c\u90e8\u5206\u5c5e\u6027\u548c HTML \u4e0d\u540c\uff0c\u91cd\u70b9\u8bb0\u5fc6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>class \u6539\u4e3a className<\/strong>\uff1aclass \u662f JS \u5173\u952e\u5b57\uff0cJSX \u4e2d\u7528 className \u5b9a\u4e49\u6837\u5f0f\u7c7b<\/li>\n\n\n\n<li><strong>\u884c\u5185\u6837\u5f0f\u5fc5\u987b\u5199\u5bf9\u8c61<\/strong>\uff1a\u6837\u5f0f\u5c5e\u6027\u9a7c\u5cf0\u547d\u540d\uff08fontSize\u3001backgroundColor\uff09<\/li>\n\n\n\n<li><strong>\u6240\u6709\u6807\u7b7e\u4e25\u683c\u533a\u5206\u5927\u5c0f\u5199<\/strong>\uff1a\u5c0f\u5199\u4e3aHTML\u539f\u751f\u6807\u7b7e\uff0c\u5927\u5199\u4e3a\u81ea\u5b9a\u4e49\u7ec4\u4ef6<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2.3 JSX \u5d4c\u5165 JS \u8868\u8fbe\u5f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSX \u4e2d\u901a\u8fc7 <strong>{}<\/strong> \u5d4c\u5165\u4efb\u610f\u5408\u6cd5 JS \u8868\u8fbe\u5f0f\uff08\u53d8\u91cf\u3001\u8fd0\u7b97\u3001\u51fd\u6570\u3001\u4e09\u5143\u8fd0\u7b97\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React from 'react';\n\nfunction App() {\n  \/\/ \u5b9a\u4e49JS\u53d8\u91cf\n  const name = \"\u5f20\u4e09\";\n  const age = 22;\n  const Gender= 0;\n\n  return (\n    &lt;div className=\"App\">\n      {\/* 1. \u5d4c\u5165\u53d8\u91cf *\/}\n      &lt;h2>\u6211\u7684\u540d\u5b57\uff1a{name}&lt;\/h2>\n      {\/* 2. \u5d4c\u5165\u8fd0\u7b97\u8868\u8fbe\u5f0f *\/}\n      &lt;p>\u5e74\u9f84\uff1a{age}&lt;\/p>\n      {\/* 3. \u5d4c\u5165\u4e09\u5143\u8868\u8fbe\u5f0f\uff08\u6761\u4ef6\u6e32\u67d3\u6838\u5fc3\uff09 *\/}\n      &lt;p>\u6027\u522b\uff1a{Gender==0? \"\u5973\" : \"\u7537\"}&lt;\/p>\n    &lt;\/div>\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a<code>{}<\/code> \u5185\u53ea\u80fd\u5199<strong>\u8868\u8fbe\u5f0f<\/strong>\uff0c\u4e0d\u80fd\u5199 if\u3001for\u3001while \u7b49\u8bed\u53e5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.3 JSX \u6761\u4ef6\u6e32\u67d3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">React \u6ca1\u6709 v-if\uff0c\u901a\u8fc7 JS \u903b\u8f91\u5b9e\u73b0\u6761\u4ef6\u6e32\u67d3\uff0c\u4e09\u79cd\u5e38\u7528\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3.1 \u4e09\u5143\u8fd0\u7b97\uff08\u6700\u5e38\u7528\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>const isLogin = true;\nreturn (\n  &lt;div&gt;\n    {isLogin ? &lt;button&gt;\u9000\u51fa\u767b\u5f55&lt;\/button&gt; : &lt;button&gt;\u70b9\u51fb\u767b\u5f55&lt;\/button&gt;}\n  &lt;\/div&gt;\n)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.3.2 \u903b\u8f91\u4e0e &amp;&amp;\uff08\u5355\u6761\u4ef6\u663e\u793a\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u9002\u7528\u4e8e\uff1a\u6ee1\u8db3\u6761\u4ef6\u663e\u793a\u5185\u5bb9\uff0c\u4e0d\u6ee1\u8db3\u4e0d\u663e\u793a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const showMsg = true;\nreturn (\n  &lt;div&gt;\n    {showMsg &amp;&amp; &lt;p&gt;\u8fd9\u662f\u4e00\u6761\u63d0\u793a\u6d88\u606f&lt;\/p&gt;}\n  &lt;\/div&gt;\n)<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2.3.3 \u53d8\u91cf\u8d4b\u503c\u6e32\u67d3\uff08\u590d\u6742\u6761\u4ef6\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u591a\u6761\u4ef6\u5206\u652f\u63a8\u8350\uff0c\u4ee3\u7801\u66f4\u6e05\u6670<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const type = 2;\nlet dom = null;\nif(type === 1) {\n  dom = &lt;span&gt;\u9996\u9875&lt;\/span&gt;\n} else if(type === 2) {\n  dom = &lt;span&gt;\u5217\u8868\u9875&lt;\/span&gt;\n} else {\n  dom = &lt;span&gt;\u8be6\u60c5\u9875&lt;\/span&gt;\n}\nreturn &lt;div&gt;{dom}&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">2.4 JSX \u5217\u8868\u6e32\u67d3\uff08\u904d\u5386\u6570\u7ec4\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">React \u6ca1\u6709 v-for\uff0c\u901a\u8fc7 <code>\u6570\u7ec4.map()<\/code> \u5b9e\u73b0\u5217\u8868\u6e32\u67d3\uff0c<strong>\u5fc5\u987b\u7ed1\u5b9a key<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6807\u51c6\u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React from 'react';\n\nfunction App() {\n  \/\/ \u5217\u8868\u6570\u636e\n  const list = &#91;\n    { id: 1, name: 'React\u57fa\u7840' },\n    { id: 2, name: 'react\u8fdb\u9636' },\n    { id: 3, name: 'react\u9ad8\u9636' }\n  ];\n\n  return (\n    &lt;div>\n      &lt;h3>\u6559\u7a0b\u76ee\u5f55&lt;\/h3>\n      &lt;ul>\n        {\/* map\u904d\u5386\u6e32\u67d3\u5217\u8868\uff0ckey\u552f\u4e00\u4e0d\u91cd\u590d *\/}\n        {list.map(item => (\n          &lt;li key={item.id}>{item.name}&lt;\/li>\n        ))}\n      &lt;\/ul>\n    &lt;\/div>\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">key \u4f5c\u7528\uff1a\u5e2e\u52a9 React \u865a\u62df DOM \u7cbe\u51c6\u8bc6\u522b\u8282\u70b9\uff0c\u63d0\u5347\u66f4\u65b0\u6027\u80fd\uff0c\u7981\u6b62\u4f7f\u7528\u7d22\u5f15\uff08index\uff09\u4f5c\u4e3akey\uff08\u590d\u6742\u5217\u8868\u4f1a\u51fa\u73b0bug\uff09\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u4e09\u7ae0\uff1aReact \u7ec4\u4ef6\u6838\u5fc3\u6982\u5ff5<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">3.1 \u7ec4\u4ef6\u662f\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ec4\u4ef6\u662f React \u7684\u6838\u5fc3\uff0c\u662f<strong>\u72ec\u7acb\u3001\u53ef\u590d\u7528\u7684\u4ee3\u7801\u7247\u6bb5<\/strong>\uff0c\u4e00\u4e2a\u9875\u9762\u53ef\u4ee5\u62c6\u5206\u4e3a\u591a\u4e2a\u7ec4\u4ef6\uff08\u5934\u90e8\u3001\u4fa7\u8fb9\u680f\u3001\u5217\u8868\u3001\u6309\u94ae\u7b49\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">React 18 \u4e3b\u6d41\uff1a<strong>\u51fd\u6570\u7ec4\u4ef6<\/strong>\uff08\u5b8c\u5168\u6452\u5f03\u7c7b\u7ec4\u4ef6\uff0c\u672c\u6559\u7a0b\u53ea\u8bb2\u4f01\u4e1a\u4e3b\u6d41\u7684\u51fd\u6570\u7ec4\u4ef6\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3.2 \u81ea\u5b9a\u4e49\u7ec4\u4ef6\uff08\u521b\u5efa+\u4f7f\u7528\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.2.1 \u521b\u5efa\u7ec4\u4ef6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u89c4\u5219\uff1a\u7ec4\u4ef6\u540d<strong>\u9996\u5b57\u6bcd\u5927\u5199<\/strong>\uff0c\u5fc5\u987b\u6709 return \u8fd4\u56deJSX\u7ed3\u6784<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u5efa <code>src\/components\/Button.jsx<\/code> \u7ec4\u4ef6\u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u81ea\u5b9a\u4e49\u6309\u94ae\u7ec4\u4ef6\nfunction MyButton() {\n  return (\n    &lt;button style={{padding: '6px 12px', margin: '0 5px'}}>\n     \u767b\u5f55\n    &lt;\/button>\n  )\n}\n\n\/\/ \u5bfc\u51fa\u7ec4\u4ef6\nexport default MyButton;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3.2.2 \u5f15\u5165\u5e76\u4f7f\u7528\u7ec4\u4ef6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 App.js \u4e2d\u5f15\u5165\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React from 'react';\n\/\/ \u5bfc\u5165\u81ea\u5b9a\u4e49\u7ec4\u4ef6\nimport MyButton from '.\/components\/Button';\n\nfunction App() {\n  return (\n    &lt;div&gt;\n      &lt;h2&gt;\u7ec4\u4ef6\u590d\u7528\u6f14\u793a&lt;\/h2&gt;\n      {\/* \u4f7f\u7528\u81ea\u5b9a\u4e49\u7ec4\u4ef6\uff0c\u53ef\u591a\u6b21\u590d\u7528 *\/}\n      &lt;MyButton \/&gt;\n      &lt;MyButton \/&gt;\n      &lt;MyButton \/&gt;\n    &lt;\/div&gt;\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">3.3 \u7ec4\u4ef6 Props \u7236\u4f20\u5b50\u4f20\u503c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Props<\/strong>\uff1a\u7ec4\u4ef6\u63a5\u6536\u5916\u90e8\u4f20\u9012\u6570\u636e\u7684\u65b9\u5f0f\uff0c<strong>\u53ea\u8bfb\u4e0d\u53ef\u4fee\u6539<\/strong>\uff0c\u5b9e\u73b0\u7ec4\u4ef6\u590d\u7528\u5dee\u5f02\u5316\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.3.1 \u57fa\u7840\u4f20\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">1. \u7236\u7ec4\u4ef6\u4f20\u503c\uff1a\u7ec4\u4ef6\u6807\u7b7e\u4e0a\u81ea\u5b9a\u4e49\u5c5e\u6027\u4f20\u53c2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2. \u5b50\u7ec4\u4ef6\u63a5\u6536\uff1a\u51fd\u6570\u53c2\u6570 props \u83b7\u53d6\u6240\u6709\u4f20\u503c<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6539\u9020\u6309\u94ae\u7ec4\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5b50\u7ec4\u4ef6 Button.jsx\nfunction MyButton(props) {\n  return (\n    &lt;button style={{padding: '6px 12px'}}&gt;\n      {props.text}\n    &lt;\/button&gt;\n  )\n}\n\nexport default MyButton;<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7236\u7ec4\u4ef6 App.js\n&lt;MyButton text=\"\u767b\u5f55\u6309\u94ae\" \/&gt;\n&lt;MyButton text=\"\u6ce8\u518c\u6309\u94ae\" \/&gt;\n&lt;MyButton text=\"\u9000\u51fa\u6309\u94ae\" \/&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3.3.2 Props \u9ed8\u8ba4\u503c\u4e0e\u89e3\u6784\u8d4b\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b80\u5316\u5199\u6cd5\uff0c\u4f01\u4e1a\u5f00\u53d1\u6807\u51c6\u5199\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u89e3\u6784props + \u9ed8\u8ba4\u503c\nfunction MyButton({ text = \"\u767b\u5f55\", color = \"#1677ff\" }) {\n  return (\n    &lt;button style={{padding: '6px 12px', background: color, color: '#fff', border: 'none'}}>\n      {text}\n    &lt;\/button>\n  )\n}\n\nexport default MyButton;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">3.4 \u7ec4\u4ef6\u901a\u4fe1\u603b\u7ed3\uff08\u57fa\u7840\uff09<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7236\u4f20\u5b50<\/strong>\uff1aProps \u4f20\u53c2\uff08\u6838\u5fc3\u3001\u6700\u5e38\u7528\uff09<\/li>\n\n\n\n<li><strong>\u5b50\u4f20\u7236<\/strong>\uff1a\u7236\u7ec4\u4ef6\u4f20\u9012\u51fd\u6570\uff0c\u5b50\u7ec4\u4ef6\u8c03\u7528\u4f20\u53c2<\/li>\n\n\n\n<li><strong>\u5144\u5f1f\u4f20\u503c<\/strong>\uff1a\u72b6\u6001\u63d0\u5347\/\u5168\u5c40\u72b6\u6001\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u56db\u7ae0\uff1aReact \u6838\u5fc3 Hooks \u7cbe\u8bb2\uff08React \u7075\u9b42\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Hooks \u662f React 16.8 \u65b0\u589e\u7279\u6027\uff0c\u8ba9<strong>\u51fd\u6570\u7ec4\u4ef6\u62e5\u6709\u72b6\u6001\u3001\u751f\u547d\u5468\u671f\u3001\u526f\u4f5c\u7528<\/strong>\uff0c\u662f\u8fdb\u9636\u6838\u5fc3\uff0c\u6240\u6709\u4f01\u4e1a\u9879\u76ee\u5fc5\u5907\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.1 useState \u72b6\u6001\u94a9\u5b50\uff08\u7ec4\u4ef6\u6570\u636e\u54cd\u5e94\u5f0f\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u7528<\/strong>\uff1a\u5b9a\u4e49\u7ec4\u4ef6\u54cd\u5e94\u5f0f\u6570\u636e\uff0c\u6570\u636e\u4fee\u6539\u81ea\u52a8\u66f4\u65b0\u9875\u9762\u89c6\u56fe<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bed\u6cd5<\/strong>\uff1a<code>const [\u53d8\u91cf, \u4fee\u6539\u53d8\u91cf\u7684\u65b9\u6cd5] = useState(\u521d\u59cb\u503c)<\/code><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.1.1 \u57fa\u7840\u7528\u6cd5\uff08\u8ba1\u6570\u5668\u6848\u4f8b\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import React, { useState } from 'react';\n\nfunction App() {\n  \/\/ \u5b9a\u4e49\u54cd\u5e94\u5f0f\u72b6\u6001 count\uff0c\u521d\u59cb\u503c0\n  const &#91;count, setCount] = useState(0);\n\n  return (\n    &lt;div style={{padding: '20px'}}&gt;\n      &lt;h3&gt;\u8ba1\u6570\u5668\uff1a{count}&lt;\/h3&gt;\n      &lt;button onClick={() =&gt; setCount(count + 1)}&gt;\u70b9\u51fb+1&lt;\/button&gt;\n      &lt;button onClick={() =&gt; setCount(count - 1)} style={{marginLeft: '10px'}}&gt;\u70b9\u51fb-1&lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4.1.2 \u590d\u6742\u6570\u636e\u72b6\u6001\uff08\u5bf9\u8c61\/\u6570\u7ec4\uff09<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1aReact \u72b6\u6001\u66f4\u65b0<strong>\u4e0d\u53ef\u76f4\u63a5\u4fee\u6539\u539f\u6570\u636e<\/strong>\uff0c\u5fc5\u987b\u66ff\u6362\u65b0\u6570\u636e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5bf9\u8c61\u72b6\u6001\nconst &#91;user, setUser] = useState({ name: \"\u5f20\u4e09\", age: 20 });\n\n\/\/ \u4fee\u6539\u5bf9\u8c61\u72b6\u6001\uff08\u6269\u5c55\u8fd0\u7b97\u7b26\u4fdd\u7559\u539f\u6709\u5c5e\u6027\uff09\nconst changeUser = () =&gt; {\n  setUser({ ...user, age: 21 })\n}\n\n\/\/ \u6570\u7ec4\u72b6\u6001\nconst &#91;list, setList] = useState(&#91;1,2,3]);\n\/\/ \u65b0\u589e\u6570\u7ec4\u6570\u636e\nconst addList = () =&gt; {\n  setList(&#91;...list, 4])\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.2 useEffect \u526f\u4f5c\u7528\u94a9\u5b50\uff08\u751f\u547d\u5468\u671f\u66ff\u4ee3\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u7528<\/strong>\uff1a\u5904\u7406\u7ec4\u4ef6\u526f\u4f5c\u7528\uff08\u8bf7\u6c42\u63a5\u53e3\u3001\u64cd\u4f5cDOM\u3001\u5b9a\u65f6\u5668\u3001\u76d1\u542c\u4e8b\u4ef6\uff09\uff0c\u66ff\u4ee3\u7c7b\u7ec4\u4ef6\u6240\u6709\u751f\u547d\u5468\u671f<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8bed\u6cd5<\/strong>\uff1a<code>useEffect(\u56de\u8c03\u51fd\u6570, \u4f9d\u8d56\u6570\u7ec4)<\/code><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.2.1 \u4e09\u79cd\u6267\u884c\u573a\u666f<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u65e0\u4f9d\u8d56<\/strong>\uff1a\u7ec4\u4ef6\u6302\u8f7d\u3001\u66f4\u65b0\u65f6\u6267\u884c<\/li>\n\n\n\n<li><strong>\u7a7a\u6570\u7ec4\u4f9d\u8d56 []<\/strong>\uff1a\u4ec5\u7ec4\u4ef6\u6302\u8f7d\u65f6\u6267\u884c\u4e00\u6b21\uff08\u5e38\u7528\uff1a\u63a5\u53e3\u8bf7\u6c42\uff09<\/li>\n\n\n\n<li><strong>\u6307\u5b9a\u4f9d\u8d56 [xxx]<\/strong>\uff1a\u6302\u8f7d\u6267\u884c + \u4f9d\u8d56\u6570\u636e\u53d8\u5316\u65f6\u6267\u884c<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">4.2.2 \u5e38\u7528\u6848\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import React, { useState, useEffect } from 'react';\n\nfunction App() {\n  const &#91;count, setCount] = useState(0);\n\n  \/\/ 1. \u6302\u8f7d\u6267\u884c\u4e00\u6b21\n  useEffect(() => {\n    console.log(\"\u63a5\u53e3\u8bf7\u6c42\");\n  }, &#91;]);\n\n  \/\/ 2. count\u53d8\u5316\u65f6\u6267\u884c\n  useEffect(() => {\n    console.log(\"count\u6570\u503c\u66f4\u65b0\u4e86\uff1a\", count);\n  }, &#91;count]);\n\n  return (\n    &lt;div>\n      &lt;p>{count}&lt;\/p>\n      &lt;button onClick={() => setCount(count + 1)}>+1&lt;\/button>\n    &lt;\/div>\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4.2.3 \u6e05\u9664\u526f\u4f5c\u7528<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9a\u65f6\u5668\u3001\u76d1\u542c\u4e8b\u4ef6\u9700\u8981\u6e05\u9664\uff0c\u9632\u6b62\u5185\u5b58\u6cc4\u6f0f\uff0c\u901a\u8fc7 return \u51fd\u6570\u5b9e\u73b0<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>useEffect(() =&gt; {\n  \/\/ \u5f00\u542f\u5b9a\u65f6\u5668\n  const timer = setInterval(() =&gt; {\n    console.log(\"\u5b9a\u65f6\u5668\u6267\u884c\");\n  }, 1000);\n\n  \/\/ \u7ec4\u4ef6\u5378\u8f7d\u65f6\u6e05\u9664\u5b9a\u65f6\u5668\n  return () =&gt; {\n    clearInterval(timer);\n  }\n}, &#91;]);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.3 useRef \u83b7\u53d6DOM\/\u4fdd\u5b58\u53d8\u91cf<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4e24\u5927\u6838\u5fc3\u4f5c\u7528<\/strong>\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u83b7\u53d6\u539f\u751f DOM \u5143\u7d20<\/li>\n\n\n\n<li>\u4fdd\u5b58\u53ef\u53d8\u53d8\u91cf\uff0c\u6570\u636e\u66f4\u65b0<strong>\u4e0d\u89e6\u53d1\u9875\u9762\u6e32\u67d3<\/strong><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">DOM\u83b7\u53d6\u6848\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React, { useRef } from 'react';\n\nfunction App() {\n  \/\/ \u521b\u5efaref\u5bf9\u8c61\n  const inputRef = useRef(null);\n\n  const getInputVal = () => {\n    \/\/ \u83b7\u53d6DOM\u5143\u7d20\u53cavalue\n    console.log(inputRef.current.value);\n    \/\/ \u805a\u7126\u8f93\u5165\u6846\n    inputRef.current.focus();\n  }\n\n  return (\n    &lt;div>\n      &lt;input ref={inputRef} placeholder=\"\u8bf7\u8f93\u5165\u5185\u5bb9\" \/>\n      &lt;button onClick={getInputVal} style={{marginLeft: '10px'}}>\u83b7\u53d6\u503c&lt;\\button>\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.4 \u5e38\u7528\u8fdb\u9636 Hooks<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.4.1 useMemo \u7f13\u5b58\u8ba1\u7b97\u7ed3\u679c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u7528<\/strong>\uff1a\u7f13\u5b58\u590d\u6742\u8ba1\u7b97\u7ed3\u679c\uff0c\u907f\u514d\u7ec4\u4ef6\u91cd\u590d\u6e32\u67d3\u91cd\u590d\u8ba1\u7b97\uff0c\u4f18\u5316\u6027\u80fd<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const sum = useMemo(() =&gt; {\n  return 100 + 200;\n}, &#91;]); \/\/ \u4f9d\u8d56\u4e0d\u53d8\uff0c\u53ea\u8ba1\u7b97\u4e00\u6b21<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4.4.2 useContext \u8de8\u7ec4\u4ef6\u4f20\u503c<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u4f5c\u7528<\/strong>\uff1a\u89e3\u51b3\u591a\u5c42\u7ec4\u4ef6\u5d4c\u5957 props \u5c42\u5c42\u4f20\u9012\u7684\u95ee\u9898\uff0c\u5b9e\u73b0\u5168\u5c40\/\u8de8\u5c42\u4f20\u503c<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u4e94\u7ae0\uff1aReact \u8868\u5355\u4e0e\u4e8b\u4ef6\u5904\u7406<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">5.1 \u4e8b\u4ef6\u7ed1\u5b9a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">React \u4e8b\u4ef6\u662f<strong>\u5408\u6210\u4e8b\u4ef6<\/strong>\uff0c\u8bed\u6cd5\u9a7c\u5cf0\u547d\u540d\uff08onClick\u3001onChange\u3001onSubmit\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e09\u79cd\u7ed1\u5b9a\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ 1. \u884c\u5185\u7b80\u5355\u4e8b\u4ef6\n&lt;button onClick={() => console.log('\u70b9\u51fb')}>\u70b9\u6211&lt;\/button>\n\n\/\/ 2. \u7ed1\u5b9a\u5916\u90e8\u51fd\u6570\nfunction handleClick() {\n  console.log('\u70b9\u4f60\u4e86');\n}\n&lt;button onClick={handleClick}>\u70b9\u6211&lt;\/button><\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">5.2 \u53d7\u63a7\u7ec4\u4ef6\uff08\u8868\u5355\u6838\u5fc3\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u53d7\u63a7\u7ec4\u4ef6<\/strong>\uff1a\u8868\u5355\u503c\u7531 React \u72b6\u6001\u63a7\u5236\uff0c\u6570\u636e\u548c\u89c6\u56fe\u53cc\u5411\u540c\u6b65\uff0c\u4f01\u4e1a\u552f\u4e00\u6807\u51c6\u5199\u6cd5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React, { useState } from 'react';\n\nfunction App() {\n  \/\/ \u72b6\u6001\u63a7\u5236\u8868\u5355\u503c\n  const &#91;value, setValue] = useState('');\n\n  return (\n    &lt;div&gt;\n      &lt;input \n        type=\"text\" \n        value={value} \n        onChange={(e) =&gt; setValue(e.target.value)}\n        placeholder=\"\u53d7\u63a7\u7ec4\u4ef6\u8f93\u5165\u6846\"\n      \/&gt;\n      &lt;p&gt;\u5b9e\u65f6\u8f93\u5165\u5185\u5bb9\uff1a{value}&lt;\/p&gt;\n    &lt;\/div&gt;\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u516d\u7ae0\uff1aReact \u8def\u7531\u57fa\u7840\uff08\u5355\u9875\u9762\u6838\u5fc3\uff09<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">React \u672c\u8eab\u6ca1\u6709\u8def\u7531\u529f\u80fd\uff0c\u9700\u8981\u501f\u52a9\u7b2c\u4e09\u65b9\u5e93<code>react-router-dom<\/code>\uff0c\u5b9e\u73b0\u9875\u9762\u8df3\u8f6c\u3001\u8def\u7531\u5207\u6362\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6.1 \u5b89\u88c5\u8def\u7531<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install react-router-dom<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">6.2 \u57fa\u7840\u8def\u7531\u914d\u7f6e<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">React Router 6 \u6700\u65b0\u8bed\u6cd5\uff08\u4f01\u4e1a\u4e3b\u6d41\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. \u5728 index.js \u5305\u88f9\u8def\u7531\u6839\u7ec4\u4ef6<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React from 'react';\nimport ReactDOM from 'react-dom\/client';\nimport App from '.\/App';\nimport { BrowserRouter } from 'react-router-dom';\n\nconst root = ReactDOM.createRoot(document.getElementById('root'));\nroot.render(\n  &lt;BrowserRouter&gt;\n    &lt;App \/&gt;\n  &lt;\/BrowserRouter&gt;\n);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">2. \u5728 App.js \u914d\u7f6e\u8def\u7531\u89c4\u5219<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { Routes, Route, Link } from 'react-router-dom';\nimport Home from '.\/pages\/Home';\nimport List from '.\/pages\/List';\n\nfunction App() {\n  return (\n    &lt;div&gt;\n      {\/* \u5bfc\u822a\u8df3\u8f6c *\/}\n      &lt;Link to=\"\/\"&gt;\u9996\u9875&lt;\/Link&gt;\n      &lt;Link to=\"\/list\" style={{marginLeft: '10px'}}&gt;\u5217\u8868\u9875&lt;\/Link&gt;\n\n      {\/* \u8def\u7531\u5339\u914d\u89c4\u5219 *\/}\n      &lt;Routes&gt;\n        &lt;Route path=\"\/\" element={&lt;Home \/&gt;} \/&gt;\n        &lt;Route path=\"\/list\" element={&lt;List \/&gt;} \/&gt;\n      &lt;\/Routes&gt;\n    &lt;\/div&gt;\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u4e03\u7ae0\uff1aReact \u72b6\u6001\u7ba1\u7406\u8fdb\u9636<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">7.1 \u72b6\u6001\u7ba1\u7406\u573a\u666f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0f\u578b\u9879\u76ee\uff1auseState + useContext \u5373\u53ef<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e2d\u5927\u578b\u9879\u76ee\uff1a\u9700\u8981\u5168\u5c40\u72b6\u6001\u7ba1\u7406\uff0c\u4e3b\u6d41\u65b9\u6848\uff1a<strong>Redux<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6559\u7a0b\u8bb2\u89e3\u6700\u7b80\u3001\u4f01\u4e1a\u9ad8\u9891\u7684 <strong>Zustand<\/strong>\uff08\u66ff\u4ee3Redux\uff0c\u7b80\u6d01\u65e0\u5197\u4f59\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7.2 Zustand \u5feb\u901f\u4e0a\u624b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">7.2.1 \u5b89\u88c5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>npm install zustand<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">7.2.2 \u521b\u5efa\u5168\u5c40\u72b6\u6001<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b0\u5efa <code>src\/store\/index.js<\/code><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { create } from 'zustand';\n\n\/\/ \u521b\u5efa\u5168\u5c40\u72b6\u6001\nconst useStore = create((set) =&gt; ({\n  \/\/ \u5168\u5c40\u6570\u636e\n  token: '',\n  userName: '\u6e38\u5ba2',\n  \/\/ \u4fee\u6539\u6570\u636e\u65b9\u6cd5\n  setToken: (val) =&gt; set({ token: val }),\n  setUserName: (val) =&gt; set({ userName: val })\n}));\n\nexport default useStore;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">7.2.3 \u7ec4\u4ef6\u4e2d\u4f7f\u7528\u5168\u5c40\u72b6\u6001<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import useStore from '.\/store';\n\nfunction App() {\n  \/\/ \u89e3\u6784\u5168\u5c40\u72b6\u6001\u548c\u65b9\u6cd5\n  const { userName, setUserName } = useStore();\n\n  return (\n    &lt;div&gt;\n      &lt;p&gt;\u5f53\u524d\u7528\u6237\uff1a{userName}&lt;\/p&gt;\n      &lt;button onClick={() =&gt; setUserName('React\u5f00\u53d1\u8005')}&gt;\u4fee\u6539\u7528\u6237\u540d&lt;\/button&gt;\n    &lt;\/div&gt;\n  );\n}\n\nexport default App;<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u516b\u7ae0\uff1aReact \u5de5\u7a0b\u5316\u4e0e\u6027\u80fd\u4f18\u5316\uff08\u9ad8\u624b\u5fc5\u5907\uff09<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">8.1 \u4ee3\u7801\u89c4\u8303\u4e0e\u76ee\u5f55\u4f18\u5316<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6807\u51c6\u76ee\u5f55\u7ed3\u6784\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>src\/assets<\/code>\uff1a\u9759\u6001\u8d44\u6e90\uff08\u56fe\u7247\u3001\u5b57\u4f53\uff09<\/li>\n\n\n\n<li><code>src\/components<\/code>\uff1a\u516c\u5171\u590d\u7528\u7ec4\u4ef6<\/li>\n\n\n\n<li><code>src\/pages<\/code>\uff1a\u9875\u9762\u7ec4\u4ef6<\/li>\n\n\n\n<li><code>src\/store<\/code>\uff1a\u5168\u5c40\u72b6\u6001\u7ba1\u7406<\/li>\n\n\n\n<li><code>src\/utils<\/code>\uff1a\u5de5\u5177\u51fd\u6570\u3001\u63a5\u53e3\u8bf7\u6c42<\/li>\n\n\n\n<li><code>src\/router<\/code>\uff1a\u8def\u7531\u914d\u7f6e<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b2c\u4e5d\u7ae0\uff1aReact \u5b9e\u6218\u5c0f\u9879\u76ee\uff08\u5de9\u56fa\u5168\u77e5\u8bc6\u70b9\uff09<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">9.1 \u5f85\u529e\u6e05\u5355 TodoList\uff08\u96f6\u57fa\u7840\u5b9e\u6218\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u529f\u80fd\uff1a\u65b0\u589e\u4efb\u52a1\u3001\u5220\u9664\u4efb\u52a1\u3001\u5c55\u793a\u4efb\u52a1\u5217\u8868\u3001\u6e05\u7a7a\u4efb\u52a1<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import React, { useState } from 'react';\n\nfunction TodoList() {\n  \/\/ \u4efb\u52a1\u5217\u8868\u72b6\u6001\n  const &#91;list, setList] = useState(&#91;\n    { id: 1, text: '\u5b66\u4e60React\u57fa\u7840' },\n    { id: 2, text: '\u638c\u63e1Hooks\u7528\u6cd5' }\n  ]);\n  \/\/ \u8f93\u5165\u6846\u5185\u5bb9\n  const &#91;inputVal, setInputVal] = useState('');\n\n  \/\/ \u65b0\u589e\u4efb\u52a1\n  const addTodo = () =&gt; {\n    if(!inputVal) return;\n    setList(&#91;...list, { id: Date.now(), text: inputVal }]);\n    setInputVal('');\n  }\n\n  \/\/ \u5220\u9664\u4efb\u52a1\n  const delTodo = (id) =&gt; {\n    setList(list.filter(item =&gt; item.id !== id));\n  }\n\n  \/\/ \u6e05\u7a7a\u6240\u6709\n  const clearAll = () =&gt; {\n    setList(&#91;]);\n  }\n\n  return (\n    &lt;div style={{padding: '30px', width: '500px', margin: '0 auto'}}&gt;\n      &lt;h2&gt;React TodoList\u5f85\u529e\u6e05\u5355&lt;\/h2&gt;\n      &lt;div style={{margin: '20px 0'}}&gt;\n        &lt;input \n          value={inputVal}\n          onChange={(e) =&gt; setInputVal(e.target.value)}\n          placeholder=\"\u8bf7\u8f93\u5165\u5f85\u529e\u4efb\u52a1\"\n          style={{padding: '6px 10px', width: '300px'}}\n        \/&gt;\n        &lt;button onClick={addTodo} style={{marginLeft: '10px', padding: '6px 12px'}}&gt;\u65b0\u589e\u4efb\u52a1&lt;\/button&gt;\n      &lt;\/div&gt;\n\n      &lt;ul style={{paddingLeft: '0'}}&gt;\n        {list.map(item =&gt; (\n          &lt;li key={item.id} style={{listStyle: 'none', padding: '8px 0', borderBottom: '1px solid #eee'}}&gt;\n            {item.text}\n            &lt;button onClick={() =&gt; delTodo(item.id)} style={{marginLeft: '20px', color: 'red', border: 'none', background: 'none', cursor: 'pointer'}}&gt;\u5220\u9664&lt;\/button&gt;\n          &lt;\/li&gt;\n        ))}\n      &lt;\/ul&gt;\n\n      {list.length &gt; 0 &amp;&amp; (\n        &lt;button onClick={clearAll} style={{marginTop: '20px'}}&gt;\u6e05\u7a7a\u6240\u6709\u4efb\u52a1&lt;\/button&gt;\n      )}\n    &lt;\/div&gt;\n  );\n}\n\nexport default TodoList;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1.React \u73af\u5883\u642d\u5efa 1.1 \u4ec0\u4e48\u662f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[9],"tags":[],"class_list":["post-31","post","type-post","status-publish","format-standard","hentry","category-9"],"views":18,"_links":{"self":[{"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/posts\/31","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/comments?post=31"}],"version-history":[{"count":3,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/posts\/31\/revisions"}],"predecessor-version":[{"id":34,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/posts\/31\/revisions\/34"}],"wp:attachment":[{"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/media?parent=31"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/categories?post=31"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wanyi.art\/index.php\/wp-json\/wp\/v2\/tags?post=31"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}