{"id":4758,"date":"2023-01-04T18:10:15","date_gmt":"2023-01-04T10:10:15","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4758"},"modified":"2023-01-04T18:10:15","modified_gmt":"2023-01-04T10:10:15","slug":"%e8%a7%a3%e6%b1%bareact-js%e4%b8%ad%e3%80%8cmaximumupdatedepthexceeded%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%8cmaximumupdatedepthexceeded%e3%80%8d%e7%9a%84%e9%8c%af%e8%aa%a4\/","title":{"rendered":"\u89e3\u6c7aReact.js\u4e2d\u300cMaximumupdatedepthexceeded\u300d\u7684\u932f\u8aa4"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"React.js, Error, Maximum update depth exceeded, componentWillUpdate, componentDidUpdate, React, nested updates, infinite loops\"><\/p>\n<h1>\u89e3\u6c7a React.js &#8220;Error: Maximum update depth exceeded&#8221; \u7684\u5e38\u898b\u932f\u8aa4<\/h1>\n<p>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\u6709\u6642\u5019\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u554f\u984c\uff0c\u5176\u4e2d\u4e00\u500b\u662f &#8220;Error: Maximum update depth exceeded&#8221;\u3002<\/p>\n<p>\u9019\u500b\u932f\u8aa4\u901a\u5e38\u6703\u5728\u958b\u767c\u8005\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u91cd\u8907\u8abf\u7528 setState \u6642\u767c\u751f\u3002React \u9650\u5236\u4e86\u5d4c\u5957\u66f4\u65b0\u7684\u6b21\u6578\uff0c\u4ee5\u9632\u6b62\u7121\u9650\u5faa\u74b0\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u8981\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u7684\u7a0b\u5f0f\u78bc\u4e0d\u6703\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u91cd\u8907\u8abf\u7528 setState\u3002<\/p>\n<h2>\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u91cd\u8907\u8abf\u7528 setState\uff1a<\/p>\n<pre class=\"brush: javascript\">\nclass MyComponent extends React.Component {\n  componentWillUpdate() {\n    this.setState({\n      foo: 'bar'\n    });\n  }\n\n  componentDidUpdate() {\n    this.setState({\n      foo: 'baz'\n    });\n  }\n\n  render() {\n    return (\n      <div>\n        {this.state.foo}\n      <\/div>\n    );\n  }\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0ccomponentWillUpdate \u548c componentDidUpdate \u90fd\u6703\u8abf\u7528 setState\uff0c\u9019\u5c07\u5c0e\u81f4\u7121\u9650\u5faa\u74b0\uff0c\u6700\u7d42\u5c0e\u81f4 &#8220;Error: Maximum update depth exceeded&#8221; \u932f\u8aa4\u3002<\/p>\n<h2>\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5c07 setState \u7684\u8abf\u7528\u79fb\u5230 render \u65b9\u6cd5\u4e4b\u5916\uff0c\u4e26\u5c07\u5176\u5305\u88dd\u5728\u4e00\u500b\u51fd\u6578\u4e2d\uff0c\u4ee5\u4fbf\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u8abf\u7528\uff1a<\/p>\n<pre class=\"brush: javascript\">\nclass MyComponent extends React.Component {\n  updateFoo() {\n    this.setState({\n      foo: 'bar'\n    });\n  }\n\n  componentWillUpdate() {\n    this.updateFoo();\n  }\n\n  componentDidUpdate() {\n    this.updateFoo();\n  }\n\n  render() {\n    return (\n      <div>\n        {this.state.foo}\n      <\/div>\n    );\n  }\n}\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0csetState \u7684\u8abf\u7528\u88ab\u79fb\u5230\u4e86 updateFoo \u51fd\u6578\u4e2d\uff0c\u800c componentWillUpdate \u548c componentDidUpdate \u5247\u8abf\u7528\u4e86 updateFoo \u51fd\u6578\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u907f\u514d\u7121\u9650\u5faa\u74b0\uff0c\u4ee5\u53ca &#8220;Error: Maximum update depth exceeded&#8221; \u932f\u8aa4\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>&#8220;Error: Maximum update depth exceeded&#8221; \u9019\u500b\u932f\u8aa4\u901a\u5e38\u6703\u5728\u958b\u767c\u8005\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u91cd\u8907\u8abf\u7528 setState \u6642\u767c\u751f\u3002\u8981\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5c07 setState \u7684\u8abf\u7528\u79fb\u5230 render \u65b9\u6cd5\u4e4b\u5916\uff0c\u4e26\u5c07\u5176\u5305\u88dd\u5728\u4e00\u500b\u51fd\u6578\u4e2d\uff0c\u4ee5\u4fbf\u5728 componentWillUpdate \u6216 componentDidUpdate \u4e2d\u8abf\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39React.js\u4e2d\u300cMaximumupdatedepthexceeded\u300d\u7684\u932f\u8aa4\uff0c\u4e26\u63d0\u4f9b\u89e3\u6c7a\u8a72\u932f\u8aa4\u7684\u65b9\u6cd5\uff0c\u8b93\u958b\u767c\u8005\u53ef\u4ee5\u907f\u514d\u7121\u9650\u5faa\u74b0\u7684\u554f\u984c\uff0c\u4e26\u66f4\u6709\u6548\u5730\u4f7f\u7528React.js\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[184,183],"tags":[182,181],"class_list":["post-4758","post","type-post","status-publish","format-standard","hentry","category-react","category-react-js","tag-react","tag-react-js"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-1eK","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4758","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=4758"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4758\/revisions"}],"predecessor-version":[{"id":4759,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4758\/revisions\/4759"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4758"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}