{"id":38643,"date":"2023-06-02T19:36:09","date_gmt":"2023-08-15T00:45:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%a6%e7%bb%86%e4%bb%8b%e7%bb%8d%e4%ba%86react%e4%b8%ad%e8%a6%81%e4%bd%bf%e7%94%a8%e7%9a%84%e6%96%87%e4%bb%b6%e3%80%81%e5%85%b6%e7%94%a8%e9%80%94%e4%bb%a5%e5%8f%8a%e7%bb%84%e4%bb%b6%e7%9a%84\/"},"modified":"2024-04-30T07:03:28","modified_gmt":"2024-04-29T23:03:28","slug":"%e8%af%a6%e7%bb%86%e4%bb%8b%e7%bb%8d%e4%ba%86react%e4%b8%ad%e8%a6%81%e4%bd%bf%e7%94%a8%e7%9a%84%e6%96%87%e4%bb%b6%e3%80%81%e5%85%b6%e7%94%a8%e9%80%94%e4%bb%a5%e5%8f%8a%e7%bb%84%e4%bb%b6%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e8%af%a6%e7%bb%86%e4%bb%8b%e7%bb%8d%e4%ba%86react%e4%b8%ad%e8%a6%81%e4%bd%bf%e7%94%a8%e7%9a%84%e6%96%87%e4%bb%b6%e3%80%81%e5%85%b6%e7%94%a8%e9%80%94%e4%bb%a5%e5%8f%8a%e7%bb%84%e4%bb%b6%e7%9a%84\/","title":{"rendered":"\u8be6\u7ec6\u4ecb\u7ecd\u4e86React\u4e2d\u8981\u4f7f\u7528\u7684\u6587\u4ef6\u3001\u5176\u7528\u9014\u4ee5\u53ca\u7ec4\u4ef6\u7684\u5b9e\u73b0"},"content":{"rendered":"<p>\u4e00\u8fb9\u5b66\u4e60React\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4e00\u8fb9\u521b\u5efaTodo\u5e94\u7528\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6211\u4eec\u8981\u521b\u5efaReact\u7684\u6a21\u677f\u3002<br \/>\n\u5728\u7ec8\u7aef\u4e2d\uff08\u5982\u679c\u662fWindows\u7cfb\u7edf\uff0c\u5219\u662f\u547d\u4ee4\u63d0\u793a\u7b26\uff09\u8f93\u5165\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code>npx create-react-app react-tutorial\r\ncd react-tutorial\r\ncode .\r\n<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u5728\u7b2c\u4e00\u884c\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u521b\u5efa\u4e00\u4e2aReact\u7684\u6a21\u677f\u3002\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0c\u6700\u597d\u5728\u6574\u7406\u9879\u76ee\u7684\u76ee\u5f55\u4e0b\u8fdb\u884c\u64cd\u4f5c\u3002<br \/>\n\u7b2c\u4e00\u884c\u7684\u6700\u540e\u4e00\u90e8\u5206 &#8220;react-tutorial&#8221; \u662f\u9879\u76ee\u5c06\u8981\u521b\u5efa\u7684\u76ee\u5f55\u540d\u79f0\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u81ea\u7531\u51b3\u5b9a\u4e00\u4e2a\u540d\u5b57\u3002<br \/>\n\u7136\u540e\uff0c\u8f6c\u5230\u521b\u5efa\u7684\u76ee\u5f55\uff0c\u5e76\u5728\u8be5\u5c42\u6b21\u7ed3\u6784\u4e0b\u6253\u5f00\u4ee3\u7801\u7f16\u8f91\u5668\u3002<\/p>\n<p>\u5728\u521b\u5efa\u7684\u76ee\u5f55\u4e2d\u67e5\u770bindex.html\u7684\u63cf\u8ff0\u3002<br \/>\n\u901a\u8fc7\u4fee\u6539\u7b80\u5355\u7ed3\u6784\u4e2dhead\u6807\u7b7e\u7684\u6807\u9898\u5143\u7d20\uff0c\u53ef\u4ee5\u66f4\u6539Web\u9875\u9762\u7684\u6807\u9898\u3002<\/p>\n<p>body\u6807\u7b7e\u4e0b\u7684div\u5143\u7d20\u4e2d\u6709\u4e00\u4e2aid\u4e3aroot\u7684\u5c5e\u6027\uff0c\u5b83\u975e\u5e38\u91cd\u8981\u3002\u7a0d\u540e\u5c06\u5bf9\u6b64\u8fdb\u884c\u89e3\u91ca\u3002<\/p>\n<p>\u800c\u4e14\uff0csrc\uff08\u6e90\u7801\uff09\/ App.js\u4e2d\u7684App\u51fd\u6570\u90e8\u5206\u662f\u5728\u7ec8\u7aef\u4e0a\u6267\u884c\u7684Web\u9875\u9762\u7684\u754c\u9762\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u4e2d\uff0c\u53ef\u4ee5\u5728\u7ec8\u7aef\u4e0a\u8fdb\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>npm start\r\n<\/code><\/pre>\n<p>\u8f93\u5165\u201c\u3068\u201d\uff0c\u4f1a\u663e\u793a\u5982\u4e0b\u6240\u793a\u7684App.js\u5185\u5bb9\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/10-0.png\" alt=\"Untitled (20).png\" \/><\/div>\n<pre class=\"post-pre\"><code>function App() {\r\n  return (\r\n    &lt;div className=\"App\"&gt;\r\n      &lt;header className=\"App-header\"&gt;\r\n        &lt;img src={logo} className=\"App-logo\" alt=\"logo\" \/&gt;\r\n        &lt;p&gt;\r\n          Edit &lt;code&gt;src\/App.js&lt;\/code&gt; and save to reload.\r\n        &lt;\/p&gt;\r\n        &lt;a\r\n          className=\"App-link\"\r\n          href=\"https:\/\/reactjs.org\"\r\n          target=\"_blank\"\r\n          rel=\"noopener noreferrer\"\r\n        &gt;\r\n          Learn React\r\n        &lt;\/a&gt;\r\n      &lt;\/header&gt;\r\n    &lt;\/div&gt;\r\n  );\r\n}\r\n\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u4e0d\u9700\u8981\uff0c\u5220\u9664React\u6807\u5fd7\u7684\u56fe\u50cf\u3001App.js\u6587\u4ef6\u4e2dApp\u51fd\u6570\u7684\u63cf\u8ff0\u548cindex.js\u6587\u4ef6\u4e2d\u5173\u4e8e\u201creportWebVitals\u201d\u7684\u63cf\u8ff0\u3002<\/p>\n<p>\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u5173\u4e8e&#8221;reportWebVitals&#8221;\u7684\u63cf\u8ff0\u53ef\u80fd\u662f\u6307\u529f\u80fd\u7528\u4e8e\u6536\u96c6\u7f51\u9875\u52a0\u8f7d\u65f6\u7684\u6307\u6807\u3002<br \/>\n\u9700\u8981\u4e00\u4e9b\u65f6\u95f4\u6765\u5b66\u4f1a\u4f7f\u7528\u3002<\/p>\n<p>\u6211\u4eec\u5f97\u5230\u7684\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<p>src\/App.js \u53ef\u4ee5\u6539\u4e3a\u4ee5\u4e0b\u7684\u4e2d\u6587\u8868\u8fbe\uff1a<\/p>\n<p>\u4e3b\u8981\u4ee3\u7801\u6587\u4ef6\/App.js<\/p>\n<pre class=\"post-pre\"><code>import '.\/App.css';\r\n\r\nfunction App() {\r\n  return &lt;div className=\"App\"&gt;&lt;\/div&gt;;\r\n}\r\n\r\nexport default App;\r\n<\/code><\/pre>\n<p>src\/index.js \u7684\u4e2d\u6587\u91ca\u4e49\u662f\u4ec0\u4e48\uff1f<\/p>\n<pre class=\"post-pre\"><code>import React from 'react';\r\nimport ReactDOM from 'react-dom\/client';\r\nimport '.\/index.css';\r\nimport App from '.\/App';\r\n\r\nconst root = ReactDOM.createRoot(document.getElementById('root'));\r\nroot.render(\r\n  &lt;React.StrictMode&gt;\r\n    &lt;App \/&gt;\r\n  &lt;\/React.StrictMode&gt;\r\n);\r\n<\/code><\/pre>\n<p>\u7b80\u8981\u89e3\u91ca\u4e00\u4e0b\uff0c\u5728index.js\u4e2d\uff0c\u6211\u4eec\u83b7\u53d6\u4e86index.html\u4e2did\u4e3a&#8221;root&#8221;\u7684div\u6807\u7b7e\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u6e32\u67d3\u64cd\u4f5c\u3002<br \/>\n\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u53ea\u6e32\u67d3\u4e86\u4e0b\u9762\u4e09\u4e2a\u5143\u7d20\u4e2d\u7684\u4e00\u4e2a\u4f5c\u4e3a\u6709\u610f\u4e49\u7684\u5143\u7d20\u3002<\/p>\n<pre class=\"post-pre\"><code>  &lt;React.StrictMode&gt;\r\n  &lt;App \/&gt;\r\n  &lt;\/React.StrictMode&gt;\r\n<\/code><\/pre>\n<p>\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u6e32\u67d3\u7684\u610f\u601d\u662f\u6307\u6839\u636e\u811a\u672c\u7b49\u62bd\u8c61\u6570\u636e\u96c6\u5408\u8fdb\u884c\u4e00\u5b9a\u7684\u5904\u7406\uff0c\u5c06\u5185\u5bb9\u7ed8\u5236\u5230\u6d4f\u89c8\u5668\u9875\u9762\u7b49\u4e0a\u9762\u3002<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c&#8221;App&#8221;\u662f\u5728App.js\u4e2d\u5b9a\u4e49\u7684\u4e00\u4e2a\u51fd\u6570\uff0c\u5e76\u8fdb\u884c\u6e32\u67d3\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u88ab\u5d4c\u5957\u5728App\u4e2d\u7684React.StrictMode\u662f\u4e00\u79cd\u4e25\u683c\u6a21\u5f0f\uff0c\u5f53\u53d1\u73b0\u4ee3\u7801\u4e2d\u5b58\u5728\u5f31\u70b9\u6216\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u4f1a\u629b\u51fa\u9519\u8bef\u4ee5\u63d0\u9192\u3002\u867d\u7136\u53ef\u4ee5\u4e0d\u52a0\u6b64\u6a21\u5f0f\u8fdb\u884c\u6267\u884c\uff0c\u4f46\u5728\u5e94\u7528\u5f00\u53d1\u4e2d\u57fa\u672c\u4e0a\u6700\u597d\u4fdd\u7559\u8be5\u6a21\u5f0f\u3002<\/p>\n<p>\u5728App.js\u6587\u4ef6\u4e2d\u6dfb\u52a0&#8221;Hello React&#8221;\u7684\u4ee3\u7801\uff0c\u5e76\u5c06\u5176\u663e\u793a\u5728\u6d4f\u89c8\u5668\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>import '.\/App.css';\r\n\r\nfunction App() {\r\n  return &lt;div className=\"App\"&gt;Hello React&lt;\/div&gt;;\r\n}\r\n\r\nexport default App;\r\n<\/code><\/pre>\n<p>\u5728<\/p>\n<div>\n<p>\u6807\u7b7e\u4e2d\u5199\u4e0b\u4e86\u201cHello React\u201d\u7684\u5185\u5bb9\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/27-0.png\" alt=\"Untitled (21).png\" \/><\/div>\n<p>\u4e3a\u4ec0\u4e48\u4f1a\u53d8\u6210\u5c45\u4e2d\u5462\uff1f\u539f\u56e0\u662f\u56e0\u4e3aApp.css\u751f\u6548\u4e86\u3002\u901a\u8fc7\u4fee\u6539\u5176\u4e2d\u7684\u63cf\u8ff0\u53ef\u4ee5\u6539\u53d8\u663e\u793a\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u6b64\u5916\uff0cReact\u8fd8\u5185\u7f6e\u4e86\u70ed\u91cd\u8f7d\u529f\u80fd\uff0c\u53ea\u8981\u6709\u4efb\u4f55\u66f4\u6539\uff0c\u5b83\u5c31\u4f1a\u81ea\u52a8\u5730\u53cd\u6620\u8fd9\u4e9b\u66f4\u6539\u3002<\/p>\n<p>React\u6210\u4e3a\u5f00\u53d1\u7684\u57fa\u7840\uff0c\u53d6\u51b3\u4e8e\u7ec4\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>import '.\/App.css';\r\n\r\nfunction App() {\r\n  return (\r\n  &lt;div className=\"App\"&gt;\r\n    &lt;TodoList\/&gt;\r\n  &lt;\/div&gt;\r\n  );\r\n}\r\n\r\nexport default App;\r\n<\/code><\/pre>\n<p>\u5728App.js\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a\u201cTodoList\u201d\u7684\u7ec4\u4ef6\u9009\u9879\u5361\uff0c\u5c06\u5176\u653e\u7f6e\u5728div\u6807\u7b7e\u5185\u3002\u7136\u800c\uff0c\u76ee\u524d\u8fd8\u6ca1\u6709\u5b9a\u4e49\u201cTodoList\u201d\uff0c\u56e0\u6b64\u4f1a\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/33-0.png\" alt=\"Untitled (22).png\" \/><\/div>\n<p>\u4e3a\u4e86\u5b9e\u73b0\u7ec4\u4ef6\uff0c\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cTodoList.jsx\u201d\u7684\u6587\u4ef6\u5728src\u76ee\u5f55\u4e2d\u3002<br \/>\n\u5982\u679c\u4f7f\u7528VScode\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u65b9\u5217\u51fa\u7684\u6269\u5c55\u529f\u80fd\u6765\u66f4\u65b9\u4fbf\u5730\u521b\u5efa\u7ec4\u4ef6\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/35-0.png\" alt=\"Untitled (23).png\" \/><\/div>\n<p>\u5b89\u88c5\u8fd9\u4e2a\u6269\u5c55\uff0c\u7136\u540e\u5728&#8221;TodoList.jsx&#8221;\u6587\u4ef6\u4e2d\u8f93\u5165&#8221;rafce&#8221;\u5e76\u6309\u4e0b\u8f6c\u6362\u6309\u94ae\uff0c\u5b83\u4f1a\u81ea\u52a8\u521b\u5efa\u7ec4\u4ef6\u7684\u6846\u67b6\u3002<\/p>\n<pre class=\"post-pre\"><code>import React from 'react'\r\n\r\nconst TodoList = () =&gt; {\r\n  return (\r\n    &lt;div&gt;TodoList&lt;\/div&gt;\r\n  )\r\n}\r\n\r\nexport default TodoList\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>const TodoList = () =&gt; {\r\n  return (\r\n    &lt;div&gt;TodoList&lt;\/div&gt;\r\n  )\r\n}\r\n<\/code><\/pre>\n<p>\u8fd9\u90e8\u5206\u662f\u4e00\u4e2a\u7ec4\u4ef6\uff0c\u5f53\u5728App.js\u4e2d\u8c03\u7528&#8221;&#8221;\u65f6\uff0c\u4f1a\u8fd4\u56de\u5e76\u663e\u793a\u8fd9\u6bb5\u4ee3\u7801\u3002<\/p>\n<p>\u91cd\u8981\u306a\u4e8b\u9805\u306f\u3001&#8221;TodoList.jsx&#8221;\u306e\u8a18\u8ff0\u306e\u672b\u5c3e\u306b&#8221;export default TodoList&#8221;\u3068\u8a18\u8ff0\u3057\u3001\u4ed6\u306e\u3044\u304b\u306a\u308b\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u3067\u3082\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u9006\u306b\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u4f7f\u7528\u3059\u308b\u5074\u306f\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u756a\u4e0a\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u306e\u8a18\u8ff0\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002App.js\u3067\u5229\u7528\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u3053\u306e\u624b\u9806\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>import TodoList from '.\/TodoList';\r\n<\/code><\/pre>\n<p>\u53ea\u9700\u8f93\u5165\u8fd9\u4e2a\uff0c\u4e4b\u524d\u7684\u9519\u8bef\u5c31\u4f1a\u88ab\u89e3\u51b3\uff0c&#8221;\u4f1a\u663e\u793a\u51fa\u6765\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/43-0.png\" alt=\"Untitled (24).png\" \/><\/div>\n<p>\u901a\u8fc7\u5c06\u7ec4\u4ef6\u5206\u5f00\uff0c\u53ef\u4ee5\u5c06\u89d2\u8272\u6dfb\u52a0\u5230\u9009\u9879\u5361\u7684\u540d\u79f0\u4e2d\uff0c\u4f7f\u5176\u66f4\u6613\u8bfb\u3002\u6b64\u5916\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u53ef\u4ee5\u5355\u72ec\u521b\u5efa\u3001\u7ba1\u7406\u548c\u4fee\u6539\uff0c\u56e0\u6b64\u5728\u5de5\u4f5c\u5206\u914d\u548c\u7ec4\u4ef6\u7ea7\u66f4\u6539\u65b9\u9762\u975e\u5e38\u65b9\u4fbf\uff0c\u8fd9\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u76f8\u53cd\u5730\uff0c\u5171\u4eab\u53d8\u91cf\u4f1a\u53d8\u5f97\u590d\u6742\uff0c\u56e0\u6b64\u589e\u52a0\u8fc7\u591a\u7684\u7ec4\u4ef6\u662f\u4e0d\u597d\u7684\u3002<\/p>\n<p>\u5f00\u59cb\u9010\u6b65\u5b9e\u73b0\u7528\u4e8e\u521b\u5efa\u5f85\u529e\u4e8b\u9879\u5e94\u7528\u7684\u529f\u80fd\u3002<\/p>\n<p>\u5728App.js\u6587\u4ef6\u4e2d\uff0c<\/p>\n<pre class=\"post-pre\"><code>import '.\/App.css';\r\nimport TodoList from '.\/TodoList';\r\n\r\nfunction App() {\r\n  return (\r\n  &lt;&gt;\r\n    &lt;TodoList\/&gt;\r\n    &lt;input type=\"text\" \/&gt;\r\n    &lt;button&gt;\u30bf\u30b9\u30af\u3092\u8ffd\u52a0&lt;\/button&gt;\r\n    &lt;button&gt;\u5b8c\u4e86\u3057\u305f\u30bf\u30b9\u30af\u306e\u524a\u9664&lt;\/button&gt;\r\n    &lt;div&gt;\u6b8b\u308a\u306e\u30bf\u30b9\u30af:0&lt;\/div&gt;\r\n  &lt;\/&gt;\r\n  );\r\n}\r\n\r\nexport default App;\r\n<\/code><\/pre>\n<p>\u4ee5\u4ee5\u4e0b\u65b9\u5f0f\u6dfb\u52a0\u3002<br \/>\n\u6b64\u5916\uff0c\u7531\u4e8ereturn\u4e0b\u65b9\u662f\u7528JSX\u7f16\u5199\u7684\uff0c\u56e0\u6b64\u65e0\u6cd5\u5e76\u5217\u5316\u9876\u5c42\u5143\u7d20\u3002<br \/>\n\u56e0\u6b64\uff0c\u5982\u679c\u5e0c\u671b\u5e76\u5217\u5316\uff0c\u9700\u8981\u7528\u7a7a\u6807\u7b7e(React.Fragment)\u5c06\u5176\u62ec\u8d77\u6765\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n<p>\u4e3a\u4e86\u7ba1\u7406\u4efb\u52a1\uff0c\u6211\u5c06\u4f7f\u7528\u540d\u4e3auseState()\u7684\u529f\u80fd\u3002\u8fd9\u662fReact Hooks\u7684\u4e00\u90e8\u5206\uff0c\u4f46\u6211\u4e0d\u592a\u4e86\u89e3\u8be6\u7ec6\u60c5\u51b5\uff0c\u6240\u4ee5\u63a5\u4e0b\u6765\u4f1a\u8fdb\u884c\u8c03\u67e5\u5e76\u505a\u603b\u7ed3\u3002\u53ea\u662f\u7c97\u7565\u5730\u67e5\u4e86\u4e00\u4e0b\u611f\u89c9\u53ef\u80fd\u4f1a\u53d7\u4f24\uff0c\u6240\u4ee5\u5148\u4e0d\u67e5\u4e86\u3002<\/p>\n<p>\u8981\u4f7f\u7528\u8fd9\u4e2a\uff0c\u5fc5\u987b\u5728\u7b2c\u4e00\u884c\u4e2d\u5bfc\u5165&#8221;useState&#8221;\u3002<\/p>\n<pre class=\"post-pre\"><code>import React, { useState } from \"react\";\r\n<\/code><\/pre>\n<p>useState()\u7528\u4e8e\u7ba1\u7406\u548c\u76d1\u89c6\u53d8\u91cf\u3002<br \/>\n\u5c06\u53d8\u91cf\u547d\u540d\u4e3a&#8221;todos&#8221;\uff0c\u5e76\u5c06\u4efb\u52a1\u4f5c\u4e3a\u5143\u7d20\u9010\u6b65\u6dfb\u52a0\u5230\u5176\u4e2d\uff0c\u5e76\u5b58\u50a8\u5177\u6709\u540d\u79f0(name)\u3001ID(id)\u3001\u4ee5\u53ca\u662f\u5426\u5df2\u5b8c\u6210(completed)\u7b49\u5c5e\u6027\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u53ea\u6709\u5f53\u4f7f\u7528useState()\u65f6\uff0c\u5728&#8221;todos&#8221;\u5217\u8868\u4e2d\u6dfb\u52a0\u65b0\u4efb\u52a1\u5e76\u4e14\u53d8\u91cf\u53d1\u751f\u66f4\u6539\u65f6\u624d\u4f1a\u8fdb\u884c\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n<p>\u7136\u540e\uff0c&#8221;setTodos&#8221;\u7528\u4e8e\u6dfb\u52a0\u5143\u7d20\u5230&#8221;todos&#8221;\u7b49\u60c5\u51b5\u65f6\u542f\u52a8\u5e76\u91cd\u65b0\u5b9a\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code>const [todos, setTodos] = useState([]);\r\n<\/code><\/pre>\n<p>\u53e6\u5916\uff0c\u5728\u540d\u4e3a\u201ctodos\u201d\u7684\u53d8\u91cf\u6570\u636e\u4e2d\uff0c\u60f3\u8981\u5728\u7ec4\u4ef6\u4e2d\u6309\u7167&#8221;TodoList&#8221;\u6765\u5904\u7406\u3002<br \/>\n\u5728\u90a3\u65f6\uff0c\u5728&#8221;TodoList&#8221;\u6807\u8bb0\u5185\u4f20\u9012\u6570\u636e\u3002\u6211\u4eec\u5728\u5de6\u8fb9\u5c06\u8fd9\u4e2a\u5df2\u547d\u540d\u4e3atodos\u7684\u53d8\u91cf\u53eb\u505aprops\u3002<br \/>\n\u901a\u8fc7\u4ee5\u4e0b\u63cf\u8ff0\uff0c\u610f\u5473\u7740\u8bf7\u5c06\u540d\u4e3atodos\u7684\u8fd9\u4e2a\u53d8\u91cf\u4f20\u9012\u5230\u8be5\u7ec4\u4ef6\u4e2d\u3002\u5728\u53f3\u8fb9\uff0c\u8bf7\u8f93\u5165\u4f60\u60f3\u4f20\u9012\u7684\u53d8\u91cf\u540d\u79f0\u5373\u53ef\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;TodoList todos={todos} \/&gt;\r\n<\/code><\/pre>\n<p>\u5e76\u4e14\uff0c\u8981\u5728TodoList\u7ec4\u4ef6\u4e2d\u63a5\u6536props\uff0c\u53ef\u4ee5\u5728\u7ec4\u4ef6\u5185\u7684\u7b2c\u4e00\u4e2a\u62ec\u53f7()\u5185\u5199\u4e0a\u60f3\u8981\u7684props\u540d\u79f0\uff08\u4f8b\u5982\uff0cprops\uff09\u3002\u7136\u540e\uff0c\u5728\u60f3\u8981\u4f7f\u7528\u8be5\u53d8\u91cf\u7684\u5730\u65b9\uff0c\u4f7f\u7528&#8221;{props.todos}&#8221;\uff0c\u5373\u53ef\u4f7f\u7528\u8be5\u53d8\u91cf\u4e2d\u5b58\u50a8\u7684\u503c\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528\u5927\u62ec\u53f7\u6765\u63cf\u8ff0\uff0c\u53ef\u4ee5\u7528JavaScript\u6765\u7f16\u5199JSX\u3002<\/p>\n<pre class=\"post-pre\"><code>import React from 'react'\r\n\r\nconst TodoList = (props) =&gt; {\r\n  return (\r\n    &lt;div&gt;{props.todos}&lt;\/div&gt;\r\n  )\r\n}\r\n\r\nexport default TodoList\r\n<\/code><\/pre>\n<p>\u5728 App.js \u4e2d\u7684 useState() \u4e2d\u6307\u5b9a\u9ed8\u8ba4\u503c\u3002\u5c06 &#8220;[&#8220;\u5f85\u529e\u4e8b\u98791&#8221;, &#8220;\u5f85\u529e\u4e8b\u98792&#8243;]&#8221; \u6dfb\u52a0\u4e3a\u5217\u8868\u5e76\u663e\u793a\u5728\u6d4f\u89c8\u5668\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code>import React, { useState } from \"react\";\r\nimport TodoList from '.\/TodoList';\r\n\r\nfunction App() {\r\n  const [todos, setTodos] = useState([\"Todo1\", \"Todo2\"]);\r\n\r\n  return (\r\n  &lt;&gt;\r\n    &lt;TodoList todos={todos} \/&gt;\r\n    &lt;input type=\"text\" \/&gt;\r\n    &lt;button&gt;\u30bf\u30b9\u30af\u3092\u8ffd\u52a0&lt;\/button&gt;\r\n    &lt;button&gt;\u5b8c\u4e86\u3057\u305f\u30bf\u30b9\u30af\u306e\u524a\u9664&lt;\/button&gt;\r\n    &lt;div&gt;\u6b8b\u308a\u306e\u30bf\u30b9\u30af:0&lt;\/div&gt;\r\n  &lt;\/&gt;\r\n  );\r\n}\r\n\r\nexport default App;\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/64-0.png\" alt=\"Untitled (25).png\" \/><\/div>\n<p>\u800c\u4e00\u822c\u6765\u8bf4\uff0c\u901a\u5e38\u4f7f\u7528\u82b1\u62ec\u53f7\u5c06{\u5f85\u529e\u4e8b\u9879}\u4f20\u9012\uff0c\u5e76\u8fdb\u884c\u4f7f\u7528\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u63cf\u8ff0\u66f4\u7b80\u6d01\uff0c\u66f4\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<pre class=\"post-pre\"><code>import React from 'react'\r\n\r\nconst TodoList = ({ todos }) =&gt; {\r\n  return (\r\n    &lt;div&gt;{todos}&lt;\/div&gt;\r\n  )\r\n}\r\n\r\nexport default TodoList\r\n<\/code><\/pre>\n<p>&#8220;TodoList&#8221;\u7ec4\u4ef6\u5c06\u6dfb\u52a0\u7684&#8221;Todos&#8221;\u5b58\u50a8\u4e3a\u4e00\u4e2a\u5217\u8868\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u662f\u4e00\u4e2a\u7ec4\u4ef6\uff0c\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a&#8221;Todo&#8221;\u7ec4\u4ef6\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u9700\u8981\u9010\u4e2a\u53d6\u51fa\u5b58\u50a8\u5728&#8221;todos&#8221;\u4e2d\u7684\u4efb\u52a1\uff0c\u5e76\u8fdb\u884c\u663e\u793a\u3002\u4e3a\u6b64\uff0c\u6211\u4eec\u5c06\u4f7f\u7528map\u51fd\u6570\u6765\u53d6\u51fa&#8221;todos&#8221;\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u5e76\u7f16\u5199Todo\u7ec4\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>return todos.map((todo) =&gt; (\r\n    &lt;Todo todo={todo}\/&gt;\r\n  ));\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5728&#8221;TodoList.jsx&#8221;\u6587\u4ef6\u7684\u8fd4\u56de\u503c\u4e2d\u8fdb\u884c\u7c7b\u4f3c\u7684\u63cf\u8ff0\uff0c\u53ef\u4ee5\u9010\u4e2a\u63d0\u53d6\u5143\u7d20\uff0c\u6bcf\u6b21\u542f\u52a8\u4e00\u4e2a\u540d\u4e3a&#8221;Todo&#8221;\u7684\u7ec4\u4ef6\u3002\u540c\u65f6\u4e5f\u8981\u8bbe\u7f6eprops\u3002<\/p>\n<p>\u7136\u540e\uff0c\u5728src\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aTodo.jsx\u7684\u6587\u4ef6\uff0c\u5e76\u7f16\u5199&#8221;rafce&#8221;\u4ee5\u521b\u5efa\u4e00\u4e2a\u7ec4\u4ef6\u7684\u6a21\u677f\u3002<\/p>\n<p>\u5728&#8221;TodoList.jsx&#8221;\u6587\u4ef6\u4e2d\uff0c\u5bfc\u5165Todo\u7ec4\u4ef6\u5e76\u5c06\u63a5\u6536\u5230\u7684&#8221;todo&#8221;\u5185\u5bb9\u663e\u793a\u51fa\u6765\u3002<\/p>\n<p>src\/todo.jsx \u6e90\u6587\u4ef6<\/p>\n<pre class=\"post-pre\"><code>import React from 'react'\r\n\r\nconst Todo = ({ todo }) =&gt; {\r\n  return (\r\n    &lt;div&gt;{todo}&lt;\/div&gt;\r\n  )\r\n}\r\n\r\nexport default Todo\r\n<\/code><\/pre>\n<p>src\/TodoList.jsx \u53ef\u4ee5\u5c06\u5176\u6c49\u8bd1\u4e3a &#8220;\u6e05\u5355.jsx&#8221;\u3002<\/p>\n<pre class=\"post-pre\"><code>import React from 'react';\r\nimport Todo from \".\/Todo\";\r\n\r\nconst TodoList = ({ todos }) =&gt; {\r\n  return todos.map((todo) =&gt; (\r\n    &lt;Todo todo={todo}\/&gt;\r\n  ));\r\n}\r\n\r\nexport default TodoList\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u5728\u6d4f\u89c8\u5668\u4e0a\u4f1a\u5f97\u5230\u5982\u4e0b\u7684\u663e\u793a\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d35b637434c4406c6d655\/78-0.png\" alt=\"Untitled (26).png\" \/><\/div>\n<p>\u7531\u4e8e\u5185\u5bb9\u7a0d\u5fae\u591a\u4e86\u4e00\u70b9\uff0c\u6240\u4ee5\u540e\u534a\u90e8\u5206\u660e\u5929\u66f4\u65b0\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u8fb9\u5b66\u4e60React\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4e00\u8fb9\u521b\u5efaTodo\u5e94\u7528\u3002 \u9996\u5148\uff0c\u6211\u4eec\u8981\u521b\u5efaReact\u7684\u6a21\u677f\u3002 \u5728\u7ec8\u7aef\u4e2d\uff08\u5982\u679c\u662fWi [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38643","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u8be6\u7ec6\u4ecb\u7ecd\u4e86React\u4e2d\u8981\u4f7f\u7528\u7684\u6587\u4ef6\u3001\u5176\u7528\u9014\u4ee5\u53ca\u7ec4\u4ef6\u7684\u5b9e\u73b0 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u8be6\u7ec6\u4ecb\u7ecd\u4e86react\u4e2d\u8981\u4f7f\u7528\u7684\u6587\u4ef6\u3001\u5176\u7528\u9014\u4ee5\u53ca\u7ec4\u4ef6\u7684\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u8be6\u7ec6\u4ecb\u7ecd\u4e86React\u4e2d\u8981\u4f7f\u7528\u7684\u6587\u4ef6\u3001\u5176\u7528\u9014\u4ee5\u53ca\u7ec4\u4ef6\u7684\u5b9e\u73b0\" \/>\n<meta property=\"og:description\" content=\"\u4e00\u8fb9\u5b66\u4e60React\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4e00\u8fb9\u521b\u5efaTodo\u5e94\u7528\u3002 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