{"id":4690,"date":"2023-01-04T17:37:29","date_gmt":"2023-01-04T09:37:29","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4690"},"modified":"2023-01-04T17:37:29","modified_gmt":"2023-01-04T09:37:29","slug":"%e8%a7%a3%e6%b1%bareact-js%e4%b8%ad%e3%80%8c%e4%b8%8d%e5%8f%97%e6%8e%a7%e5%88%b6%e7%9a%84%e8%bc%b8%e5%85%a5%e9%a1%9e%e5%9e%8bcheckbox%e3%80%8d%e7%9a%84%e9%8c%af%e8%aa%a4","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/react-js\/%e8%a7%a3%e6%b1%bareact-js%e4%b8%ad%e3%80%8c%e4%b8%8d%e5%8f%97%e6%8e%a7%e5%88%b6%e7%9a%84%e8%bc%b8%e5%85%a5%e9%a1%9e%e5%9e%8bcheckbox%e3%80%8d%e7%9a%84%e9%8c%af%e8%aa%a4\/","title":{"rendered":"\u89e3\u6c7aReact.js\u4e2d\u300c\u4e0d\u53d7\u63a7\u5236\u7684\u8f38\u5165\u985e\u578bcheckbox\u300d\u7684\u932f\u8aa4"},"content":{"rendered":"

<\/p>\n

\u89e3\u6c7a React.js “Error: A component is changing an uncontrolled input of type checkbox to be controlled.” \u932f\u8aa4<\/h1>\n

React.js \u662f\u4e00\u500b\u7528\u65bc\u69cb\u5efa\u7528\u6236\u754c\u9762\u7684 JavaScript \u5eab\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u8f15\u9b06\u5730\u69cb\u5efa\u9ad8\u6027\u80fd\u7684\u7db2\u9801\u61c9\u7528\u7a0b\u5e8f\u3002\u7136\u800c\uff0c\u5728\u958b\u767c React.js \u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u500b\u5e38\u898b\u7684\u932f\u8aa4\uff1a\u201cError: A component is changing an uncontrolled input of type checkbox to be controlled.\u201d \u9019\u500b\u932f\u8aa4\u8868\u660e React.js \u6b63\u5728\u5617\u8a66\u5c07\u4e00\u500b\u672a\u53d7\u63a7\u5236\u7684\u8f38\u5165\uff08\u4f8b\u5982 checkbox\uff09\u8f49\u63db\u70ba\u53d7\u63a7\u5236\u7684\u8f38\u5165\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u89e3\u6c7a\u6b64\u932f\u8aa4\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u53d7\u63a7\u7d44\u4ef6\uff1f<\/h2>\n

\u53d7\u63a7\u7d44\u4ef6\u662f React.js \u4e2d\u7684\u4e00\u7a2e\u7279\u6b8a\u7d44\u4ef6\uff0c\u5b83\u7684\u72c0\u614b\u7531 React.js \u63a7\u5236\u3002\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u53ef\u4ee5\u901a\u904e\u4f7f\u7528 setState()<\/code> \u65b9\u6cd5\u4f86\u66f4\u6539\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u66f4\u6539 DOM \u4e2d\u7684\u503c\u3002\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u53ef\u4ee5\u901a\u904e this.state<\/code> \u5c6c\u6027\u4f86\u8a2a\u554f\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u8a2a\u554f DOM \u4e2d\u7684\u503c\u3002<\/p>\n

\u4ec0\u9ebc\u662f\u672a\u53d7\u63a7\u7d44\u4ef6\uff1f<\/h2>\n

\u672a\u53d7\u63a7\u7d44\u4ef6\u662f React.js \u4e2d\u7684\u53e6\u4e00\u7a2e\u7279\u6b8a\u7d44\u4ef6\uff0c\u5b83\u7684\u72c0\u614b\u4e0d\u53d7 React.js \u63a7\u5236\u3002\u672a\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u53ef\u4ee5\u76f4\u63a5\u66f4\u6539 DOM \u4e2d\u7684\u503c\uff0c\u800c\u4e0d\u9700\u8981\u4f7f\u7528 setState()<\/code> \u65b9\u6cd5\u3002\u672a\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u53ef\u4ee5\u76f4\u63a5\u8a2a\u554f DOM \u4e2d\u7684\u503c\uff0c\u800c\u4e0d\u662f\u901a\u904e this.state<\/code> \u5c6c\u6027\u4f86\u8a2a\u554f\u3002<\/p>\n

\u5982\u4f55\u89e3\u6c7a React.js “Error: A component is changing an uncontrolled input of type checkbox to be controlled.” \u932f\u8aa4\uff1f<\/h2>\n

\u8981\u89e3\u6c7a React.js “Error: A component is changing an uncontrolled input of type checkbox to be controlled.” \u932f\u8aa4\uff0c\u60a8\u9700\u8981\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u8f49\u63db\u70ba\u53d7\u63a7\u7d44\u4ef6\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 setState()<\/code> \u65b9\u6cd5\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u66f4\u6539\u70ba\u53d7\u63a7\u72c0\u614b\uff0c\u4e26\u4f7f\u7528 this.state<\/code> \u5c6c\u6027\u4f86\u8a2a\u554f\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u8f49\u63db\u70ba\u53d7\u63a7\u7d44\u4ef6\uff1a<\/p>\n

\nclass MyComponent extends React.Component {\n  constructor(props) {\n    super(props);\n    this.state = {\n      isChecked: false\n    };\n  }\n\n  handleChange = (event) => {\n    this.setState({\n      isChecked: event.target.checked\n    });\n  }\n\n  render() {\n    return (\n      \n    );\n  }\n}\n<\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u8f49\u63db\u70ba\u53d7\u63a7\u7d44\u4ef6\u3002\u6211\u5011\u4f7f\u7528 setState()<\/code> \u65b9\u6cd5\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u66f4\u6539\u70ba\u53d7\u63a7\u72c0\u614b\uff0c\u4e26\u4f7f\u7528 this.state<\/code> \u5c6c\u6027\u4f86\u8a2a\u554f\u53d7\u63a7\u7d44\u4ef6\u7684\u72c0\u614b\u3002<\/p>\n
\u901a\u904e\u5c07\u672a\u53d7\u63a7\u7d44\u4ef6\u8f49\u63db\u70ba\u53d7\u63a7\u7d44\u4ef6\uff0c\u60a8\u53ef\u4ee5\u89e3\u6c7a React.js “Error: A component is changing an uncontrolled input of type checkbox to be controlled.” \u932f\u8aa4\u3002<\/p>\n
<\/p>\n
\u7e3d\u7d50<\/h2>\n
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