{"id":4708,"date":"2023-01-04T17:47:10","date_gmt":"2023-01-04T09:47:10","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4708"},"modified":"2023-01-04T17:47:10","modified_gmt":"2023-01-04T09:47:10","slug":"%e8%a7%a3%e6%b1%bareact-js%e4%b8%ad%e7%9a%84typeerrorthis-setstateisnotafunction%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%e7%9a%84typeerrorthis-setstateisnotafunction%e9%8c%af%e8%aa%a4\/","title":{"rendered":"\u89e3\u6c7aReact.js\u4e2d\u7684”TypeError:this.setStateisnotafunction”\u932f\u8aa4"},"content":{"rendered":"

<\/p>\n

\u89e3\u6c7a React.js “TypeError: this.setState is not a function” \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\u4f7f\u7528 React.js \u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u554f\u984c\uff0c\u5176\u4e2d\u4e00\u500b\u662f “TypeError: this.setState is not a function” \u932f\u8aa4\u3002<\/p>\n

\u9019\u500b\u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u958b\u767c\u8005\u5728\u4f7f\u7528 React.js \u6642\u6c92\u6709\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\u3002this.setState() \u65b9\u6cd5\u662f React.js \u4e2d\u6700\u91cd\u8981\u7684\u65b9\u6cd5\u4e4b\u4e00\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\uff0c\u4e26\u4e14\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\u3002<\/p>\n

\u89e3\u6c7a “TypeError: this.setState is not a function” \u932f\u8aa4\u7684\u65b9\u6cd5<\/h2>\n

\u8981\u89e3\u6c7a “TypeError: this.setState is not a function” \u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\u3002<\/p>\n

\u9996\u5148\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u7d81\u5b9a this \u5230\u4ed6\u5011\u7684\u51fd\u6578\u4e2d\uff0c\u4ee5\u4fbf this.setState() \u65b9\u6cd5\u53ef\u4ee5\u6b63\u78ba\u5730\u8a2a\u554f\u7d44\u4ef6\u7684\u72c0\u614b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u958b\u767c\u8005\u6b63\u5728\u4f7f\u7528 ES6 \u7684\u7bad\u982d\u51fd\u6578\uff0c\u4ed6\u5011\u53ef\u4ee5\u5c07 this \u7d81\u5b9a\u5230\u7bad\u982d\u51fd\u6578\u4e2d\uff1a<\/p>\n

\nhandleClick = () => {\n  this.setState({\n    count: this.state.count + 1\n  });\n}\n<\/pre>\n
\u5176\u6b21\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\uff0c\u4ee5\u4fbf\u6b63\u78ba\u5730\u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\u3002this.setState() \u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u5c0d\u8c61\uff0c\u8a72\u5c0d\u8c61\u5305\u542b\u8981\u66f4\u65b0\u7684\u72c0\u614b\u5c6c\u6027\u548c\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u958b\u767c\u8005\u60f3\u8981\u66f4\u65b0\u7d44\u4ef6\u7684 count \u5c6c\u6027\uff0c\u4ed6\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
\nthis.setState({\n  count: this.state.count + 1\n});\n<\/pre>\n
\u6700\u5f8c\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\uff0c\u4ee5\u4fbf\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\u3002this.setState() \u65b9\u6cd5\u63a5\u53d7\u4e00\u500b\u53ef\u9078\u7684\u56de\u8abf\u51fd\u6578\uff0c\u8a72\u51fd\u6578\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u88ab\u8abf\u7528\uff0c\u4ee5\u4fbf\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\u3002\u4f8b\u5982\uff0c\u5982\u679c\u958b\u767c\u8005\u60f3\u8981\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\uff0c\u4ed6\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\uff1a<\/p>\n
\nthis.setState({\n  count: this.state.count + 1\n}, () => {\n  this.render();\n});\n<\/pre>\n
\u7e3d\u7d50\uff0c\u8981\u89e3\u6c7a “TypeError: this.setState is not a function” \u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\uff0c\u4ee5\u4fbf\u6b63\u78ba\u5730\u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\uff0c\u4e26\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\u3002<\/p>\n
<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u8a0e\u8ad6\u4e86\u5982\u4f55\u89e3\u6c7a React.js “TypeError: this.setState is not a function” \u932f\u8aa4\u3002\u6211\u5011\u767c\u73fe\uff0c\u8981\u89e3\u6c7a\u6b64\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u4ed6\u5011\u6b63\u78ba\u5730\u4f7f\u7528 this.setState() \u65b9\u6cd5\uff0c\u4ee5\u4fbf\u6b63\u78ba\u5730\u66f4\u65b0\u7d44\u4ef6\u7684\u72c0\u614b\uff0c\u4e26\u5728\u72c0\u614b\u66f4\u65b0\u5f8c\u91cd\u65b0\u6e32\u67d3\u7d44\u4ef6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u89e3\u6c7aReact.js\u4e2d\u7684”TypeError:this.setStateisnotafunction”\u932f\u8aa4\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u6709\u7528\u7684\u6280\u5de7\uff0c\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u89e3\u6c7a\u6b64\u554f\u984c\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-4708","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\/pcFK27-1dW","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4708","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=4708"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4708\/revisions"}],"predecessor-version":[{"id":4709,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4708\/revisions\/4709"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}