{"id":4550,"date":"2023-01-04T16:08:28","date_gmt":"2023-01-04T08:08:28","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4550"},"modified":"2023-01-04T16:08:28","modified_gmt":"2023-01-04T08:08:28","slug":"%e5%ad%b8%e7%bf%92react-js%e7%b5%84%e4%bb%b6%e7%94%9f%e5%91%bd%e9%80%b1%e6%9c%9flifecyclemethods","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/react-js\/%e5%ad%b8%e7%bf%92react-js%e7%b5%84%e4%bb%b6%e7%94%9f%e5%91%bd%e9%80%b1%e6%9c%9flifecyclemethods\/","title":{"rendered":"\u5b78\u7fd2React.js\u7d44\u4ef6\u751f\u547d\u9031\u671f(lifecyclemethods)"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"React, React \u7d44\u4ef6\u751f\u547d\u9031\u671f, lifecycle methods\"><\/p>\n<h1>React \u7d44\u4ef6\u751f\u547d\u9031\u671f(lifecycle methods)<\/h1>\n<p>React \u7d44\u4ef6\u751f\u547d\u9031\u671f(lifecycle methods)\u662f React 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\u6703\u57f7\u884c\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>constructor()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u521d\u59cb\u5316\u6642\u57f7\u884c\uff0c\u53ef\u4ee5\u5728\u9019\u500b\u65b9\u6cd5\u4e2d\u8a2d\u5b9a\u7d44\u4ef6\u7684\u521d\u59cb\u72c0\u614b\u3002<\/li>\n<li><strong>getDerivedStateFromProps()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u521d\u59cb\u5316\u6642\u548c\u66f4\u65b0\u6642\u57f7\u884c\uff0c\u53ef\u4ee5\u5728\u9019\u500b\u65b9\u6cd5\u4e2d\u6839\u64da props \u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\u3002<\/li>\n<li><strong>render()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u521d\u59cb\u5316\u6642\u548c\u66f4\u65b0\u6642\u57f7\u884c\uff0c\u53ef\u4ee5\u5728\u9019\u500b\u65b9\u6cd5\u4e2d\u6e32\u67d3\u7d44\u4ef6\u7684 UI\u3002<\/li>\n<li><strong>componentDidMount()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u6e32\u67d3\u5230 DOM 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\u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\u3002<\/li>\n<li><strong>shouldComponentUpdate()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u66f4\u65b0\u6642\u57f7\u884c\uff0c\u53ef\u4ee5\u5728\u9019\u500b\u65b9\u6cd5\u4e2d\u6c7a\u5b9a\u7d44\u4ef6\u662f\u5426\u8981\u66f4\u65b0\u3002<\/li>\n<li><strong>render()<\/strong>\uff1a\u5728\u7d44\u4ef6\u88ab\u521d\u59cb\u5316\u6642\u548c\u66f4\u65b0\u6642\u57f7\u884c\uff0c\u53ef\u4ee5\u5728\u9019\u500b\u65b9\u6cd5\u4e2d\u6e32\u67d3\u7d44\u4ef6\u7684 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