{"id":3473,"date":"2024-11-10T08:50:40","date_gmt":"2024-11-10T00:50:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3473\/"},"modified":"2024-11-10T08:50:40","modified_gmt":"2024-11-10T00:50:40","slug":"react-18-%e4%b8%a5%e6%a0%bc%e6%a8%a1%e5%bc%8f%e6%a8%a1%e6%8b%9f%e6%b8%b2%e6%9f%93%ef%bc%9a%e7%b1%bb%e7%bb%84%e4%bb%b6%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e5%a6%82%e4%bd%95%e5%8f%98%e5%8c%96%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3473\/","title":{"rendered":"React 18 \u4e25\u683c\u6a21\u5f0f\u6a21\u62df\u6e32\u67d3\uff1a\u7c7b\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u5982\u4f55\u53d8\u5316\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173104275334401.jpg\" class=\"aligncenter\" title=\"React 18 \u4e25\u683c\u6a21\u5f0f\u6a21\u62df\u6e32\u67d3\uff1a\u7c7b\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u5982\u4f55\u53d8\u5316\uff1f\u63d2\u56fe\" alt=\"React 18 \u4e25\u683c\u6a21\u5f0f\u6a21\u62df\u6e32\u67d3\uff1a\u7c7b\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u5982\u4f55\u53d8\u5316\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>react 18 \u4e25\u683c\u6a21\u5f0f\u4e0b\u6a21\u62df\u6e32\u67d3\u7684\u56f0\u60d1<\/strong><\/p>\n<p>React 18 \u4e25\u683c\u6a21\u5f0f\u5f15\u5165\u4e86\u4e00\u6b21\u6a21\u62df\u6e32\u67d3\uff0c\u5bfc\u81f4\u7c7b\u7ec4\u4ef6\u7684\u751f\u547d\u5468\u671f\u53d1\u751f\u53d8\u5316\uff0c\u4ea7\u751f\u4e86\u4e00\u4e9b\u56f0\u60d1\u3002<\/p>\n<p><strong>\u6a21\u62df\u6e32\u67d3\u5bf9\u751f\u547d\u5468\u671f\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u6a21\u62df\u6e32\u67d3\u53d1\u751f\u5728\u7ec4\u4ef6\u7b2c\u4e00\u6b21\u6302\u8f7d\u4e4b\u524d\uff0c\u6b64\u65f6\u4f1a\u6267\u884c constructor \u65b9\u6cd5\uff0c\u4f46\u4e0d\u4f1a\u6267\u884c componentDidMount \u65b9\u6cd5\u3002\u8fd9\u4f1a\u5bfc\u81f4\u4e00\u4e2a\u6709\u8da3\u7684\u60c5\u51b5\uff1a<\/p>\n<ul>\n<li>\u521d\u6b21\u6e32\u67d3\uff1aconstructor -&gt; componentDidMount<\/li>\n<li>\u6a21\u62df\u6e32\u67d3\uff1aconstructor -&gt; componentWillUnmount -&gt; constructor -&gt; componentDidMount<\/li>\n<\/ul>\n<p><strong>\u5bf9\u8c61\u521d\u59cb\u5316\u7684\u56f0\u60d1<\/strong><\/p>\n<p>\u7531\u4e8e\u6a21\u62df\u6e32\u67d3\u4f1a\u5148\u521d\u59cb\u5316\u4e00\u6b21\u5bf9\u8c61\uff08\u4f8b\u5982 this.ob\uff09\uff0c\u7136\u540e\u5728\u7b2c\u4e00\u6b21\u5378\u8f7d\u65f6\u91cd\u7f6e\u5b83\uff0c\u5f53\u7b2c\u4e8c\u6b21\u521d\u59cb\u5316\u65f6\u5b83\u5c31\u4f1a\u88ab\u91cd\u7f6e\u4e3a null\u3002\u8fd9\u4f1a\u5bfc\u81f4\u7b2c\u4e8c\u6b21\u6e32\u67d3\u65f6\u4f7f\u7528\u8be5\u5bf9\u8c61\u65f6\u62a5\u9519\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<p>\u4e3a\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<ul>\n<li> <strong>\u5c06\u5bf9\u8c61\u521d\u59cb\u5316\u79fb\u52a8\u5230 componentDidMount \u4e2d<\/strong>\uff1a\u8fd9\u6837\u505a\u786e\u4fdd\u5bf9\u8c61\u53ea\u5728\u9996\u6b21\u6e32\u67d3\u65f6\u521d\u59cb\u5316\u3002<\/li>\n<li> <strong>\u4f7f\u7528\u65b0\u7684\u751f\u547d\u5468\u671f\u65b9\u6cd5 getDerivedStateFromProps \u6216 getSnapshotBeforeUpdate\uff1a<\/strong>\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u5728\u6bcf\u6b21\u6e32\u67d3\u524d\u90fd\u4f1a\u88ab\u8c03\u7528\uff0c\u9002\u5408\u7528\u4e8e\u521d\u59cb\u5316\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fReact 18 \u4e25\u683c\u6a21\u5f0f\u6a21\u62df\u6e32\u67d3\uff1a\u7c7b\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u5982\u4f55\u53d8\u5316\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>react 18 \u4e25\u683c\u6a21\u5f0f\u4e0b\u6a21\u62df\u6e32\u67d3\u7684\u56f0\u60d1 React 18 \u4e25\u683c\u6a21\u5f0f\u5f15\u5165\u4e86\u4e00\u6b21\u6a21\u62df\u6e32\u67d3\uff0c\u5bfc\u81f4\u7c7b\u7ec4\u4ef6\u7684\u751f\u547d\u5468\u671f\u53d1\u751f\u53d8\u5316\uff0c\u4ea7\u751f\u4e86\u4e00\u4e9b\u56f0\u60d1\u3002 \u6a21\u62df\u6e32\u67d3\u5bf9\u751f\u547d\u5468\u671f\u7684\u5f71\u54cd \u6a21\u62df\u6e32\u67d3\u53d1\u751f\u5728\u7ec4\u4ef6\u7b2c\u4e00\u6b21\u6302\u8f7d\u4e4b\u524d\uff0c\u6b64\u65f6\u4f1a\u6267\u884c constructor \u65b9\u6cd5\uff0c\u4f46\u4e0d\u4f1a\u6267\u884c componentDidMount \u65b9\u6cd5\u3002\u8fd9\u4f1a\u5bfc\u81f4\u4e00\u4e2a\u6709\u8da3\u7684\u60c5\u51b5\uff1a \u521d\u6b21\u6e32\u67d3\uff1aconstructor -&gt; componentDidMount \u6a21\u62df\u6e32\u67d3\uff1aconstructor -&gt; componentWillUnmount -&gt; constructor -&gt; componentDidMount \u5bf9\u8c61\u521d\u59cb\u5316\u7684\u56f0\u60d1 \u7531\u4e8e\u6a21\u62df\u6e32\u67d3\u4f1a\u5148\u521d\u59cb\u5316\u4e00\u6b21\u5bf9\u8c61\uff08\u4f8b\u5982 this.ob\uff09\uff0c\u7136\u540e\u5728\u7b2c\u4e00\u6b21\u5378\u8f7d\u65f6\u91cd\u7f6e\u5b83\uff0c\u5f53\u7b2c\u4e8c\u6b21\u521d\u59cb\u5316\u65f6\u5b83\u5c31\u4f1a\u88ab\u91cd\u7f6e\u4e3a null\u3002\u8fd9\u4f1a\u5bfc\u81f4\u7b2c\u4e8c\u6b21\u6e32\u67d3\u65f6\u4f7f\u7528\u8be5\u5bf9\u8c61\u65f6\u62a5\u9519\u3002 \u89e3\u51b3\u65b9\u6848 \u4e3a\u907f\u514d\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f60\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u89e3\u51b3\u65b9\u6848\uff1a \u5c06\u5bf9\u8c61\u521d\u59cb\u5316\u79fb\u52a8\u5230 componentDidMount \u4e2d\uff1a\u8fd9\u6837\u505a\u786e\u4fdd\u5bf9\u8c61\u53ea\u5728\u9996\u6b21\u6e32\u67d3\u65f6\u521d\u59cb\u5316\u3002 \u4f7f\u7528\u65b0\u7684\u751f\u547d\u5468\u671f\u65b9\u6cd5 getDerivedStateFromProps \u6216 getSnapshotBeforeUpdate\uff1a\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u5728\u6bcf\u6b21\u6e32\u67d3\u524d\u90fd\u4f1a\u88ab\u8c03\u7528\uff0c\u9002\u5408\u7528\u4e8e\u521d\u59cb\u5316\u5bf9\u8c61\u3002 \u4ee5\u4e0a\u5c31\u662fReact 18 \u4e25\u683c\u6a21\u5f0f\u6a21\u62df\u6e32\u67d3\uff1a\u7c7b\u7ec4\u4ef6\u751f\u547d\u5468\u671f\u5982\u4f55\u53d8\u5316\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-3473","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3473","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=3473"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3473\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}