{"id":52133,"date":"2024-12-03T15:21:25","date_gmt":"2024-12-03T07:21:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52133\/"},"modified":"2024-12-03T15:21:25","modified_gmt":"2024-12-03T07:21:25","slug":"react%e7%bb%84%e4%bb%b6%e6%b8%b2%e6%9f%93%e5%89%8d%e5%a6%82%e4%bd%95%e7%a1%ae%e4%bf%9d%e5%88%9d%e5%a7%8b%e5%8c%96%e6%93%8d%e4%bd%9c%e5%ae%8c%e6%88%90%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52133\/","title":{"rendered":"React\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

React\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f<\/h1>\n

\u4f60\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300aReact\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n

\"React\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f\u63d2\u56fe\"<\/p>\n

\u5728\u7ec4\u4ef6\u6e32\u67d3\u524d\u786e\u4fdd\u521d\u59cb\u5316\u5b8c\u6210<\/strong><\/p>\n

\u5f53\u7ec4\u4ef6\u63a5\u6536\u5230\u66f4\u65b0\u7684props\u65f6\uff0c\u9700\u8981\u5728\u6e32\u67d3\u81ea\u8eab\u6570\u636e\u4e4b\u524d\u8fdb\u884c\u521d\u59cb\u5316\u64cd\u4f5c\u3002\u4e3a\u786e\u4fdd\u6b64\u64cd\u4f5c\u5728\u6e32\u67d3\u524d\u5b8c\u6210\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u751f\u547d\u5468\u671f\u65b9\u6cd5\uff1a<\/p>\n

\u5bf9\u4e8e\u7b80\u5355\u573a\u666f\uff1a<\/strong><\/p>\n

\u65e0\u9700\u4efb\u4f55\u590d\u6742\u64cd\u4f5c\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u7ec4\u4ef6\u51fd\u6570\u4e2d\u58f0\u660e\u521d\u59cb\u5316\u53d8\u91cf\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n

const updateddata = props.data + '_updated';<\/pre>\n
\u53ef\u4ee5\u5728\u7ec4\u4ef6\u51fd\u6570\u7684\u5f00\u5934\u76f4\u63a5\u8d4b\u503c\u3002<\/p>\n
\u5bf9\u4e8e\u4f9d\u8d56props.data\u5b58\u5728\u5927\u6570\u636e\u91cf\u8ba1\u7b97\u7684\u573a\u666f\uff1a<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528usememo\u94a9\u5b50\u51fd\u6570\uff0c\u8ba9\u6b64\u8ba1\u7b97\u903b\u8f91\u53ea\u5728props\u6539\u53d8\u65f6\u6267\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n
const updateddata = usememo(() => {\n  return props.data + '_updated';\n}, [props.data]);<\/pre>\n
\u5bf9\u4e8e\u4f7f\u7528\u72b6\u6001\uff08state\uff09\u63a7\u5236\u65b0\u503c\u5e76\u4f9d\u8d56props.data\u6539\u53d8\u7684\u573a\u666f\uff1a<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528usestate\u94a9\u5b50\u548cuseeffect\u751f\u547d\u5468\u671f\uff0c\u5728props\u66f4\u65b0\u65f6\u66f4\u65b0\u72b6\u6001\uff0c\u5e76\u4f7f\u7528\u72b6\u6001\u503c\u4f5c\u4e3a\u6e32\u67d3\u6570\u636e\u3002\u4f8b\u5982\uff1a<\/p>\n
const [updatedData, setUpdatedData] = useState(() => {\n  \/\/ \u505a\u4e00\u4e9b\u521d\u59cb\u5316\u64cd\u4f5c\n  return props.data + '_updated';\n});\n\nuseEffect(() => {\n  setUpdatedData(props.data + '_updated');\n}, [props.data]);<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u300aReact\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n
\n
<\/dt>\n
\n   Tkinter\u754c\u9762\u5b9e\u65f6\u7ed8\u5236\u51fd\u6570\u56fe\u50cf\uff1a\u5982\u4f55\u5b9e\u73b0\u6309\u94ae\u63a7\u5236\u7535\u8def\u7684\u65ad\u5f00\u4e0e\u95ed\u5408\u5e76\u4ece\u70b9\u51fb\u65f6\u523b\u5f00\u59cb\u7ed8\u5236\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
React\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f \u4f60\u5728\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300aReact\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01 \u5728\u7ec4\u4ef6\u6e32\u67d3\u524d\u786e\u4fdd\u521d\u59cb\u5316\u5b8c\u6210 \u5f53\u7ec4\u4ef6\u63a5\u6536\u5230\u66f4\u65b0\u7684props\u65f6\uff0c\u9700\u8981\u5728\u6e32\u67d3\u81ea\u8eab\u6570\u636e\u4e4b\u524d\u8fdb\u884c\u521d\u59cb\u5316\u64cd\u4f5c\u3002\u4e3a\u786e\u4fdd\u6b64\u64cd\u4f5c\u5728\u6e32\u67d3\u524d\u5b8c\u6210\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u751f\u547d\u5468\u671f\u65b9\u6cd5\uff1a \u5bf9\u4e8e\u7b80\u5355\u573a\u666f\uff1a \u65e0\u9700\u4efb\u4f55\u590d\u6742\u64cd\u4f5c\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u7ec4\u4ef6\u51fd\u6570\u4e2d\u58f0\u660e\u521d\u59cb\u5316\u53d8\u91cf\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u4ee3\u7801\uff1a const updateddata = props.data + ‘_updated’; \u53ef\u4ee5\u5728\u7ec4\u4ef6\u51fd\u6570\u7684\u5f00\u5934\u76f4\u63a5\u8d4b\u503c\u3002 \u5bf9\u4e8e\u4f9d\u8d56props.data\u5b58\u5728\u5927\u6570\u636e\u91cf\u8ba1\u7b97\u7684\u573a\u666f\uff1a \u53ef\u4ee5\u4f7f\u7528usememo\u94a9\u5b50\u51fd\u6570\uff0c\u8ba9\u6b64\u8ba1\u7b97\u903b\u8f91\u53ea\u5728props\u6539\u53d8\u65f6\u6267\u884c\u3002\u4f8b\u5982\uff1a const updateddata = usememo(() => { return props.data + ‘_updated’; }, [props.data]); \u5bf9\u4e8e\u4f7f\u7528\u72b6\u6001\uff08state\uff09\u63a7\u5236\u65b0\u503c\u5e76\u4f9d\u8d56props.data\u6539\u53d8\u7684\u573a\u666f\uff1a \u53ef\u4ee5\u4f7f\u7528usestate\u94a9\u5b50\u548cuseeffect\u751f\u547d\u5468\u671f\uff0c\u5728props\u66f4\u65b0\u65f6\u66f4\u65b0\u72b6\u6001\uff0c\u5e76\u4f7f\u7528\u72b6\u6001\u503c\u4f5c\u4e3a\u6e32\u67d3\u6570\u636e\u3002\u4f8b\u5982\uff1a const [updatedData, setUpdatedData] = useState(() => { \/\/ \u505a\u4e00\u4e9b\u521d\u59cb\u5316\u64cd\u4f5c return props.data + ‘_updated’; }); useEffect(() => { setUpdatedData(props.data + ‘_updated’); }, [props.data]); \u4ee5\u4e0a\u5c31\u662f\u300aReact\u7ec4\u4ef6\u6e32\u67d3\u524d\u5982\u4f55\u786e\u4fdd\u521d\u59cb\u5316\u64cd\u4f5c\u5b8c\u6210\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01 Tkinter\u754c\u9762\u5b9e\u65f6\u7ed8\u5236\u51fd\u6570\u56fe\u50cf\uff1a\u5982\u4f55\u5b9e\u73b0\u6309\u94ae\u63a7\u5236\u7535\u8def\u7684\u65ad\u5f00\u4e0e\u95ed\u5408\u5e76\u4ece\u70b9\u51fb\u65f6\u523b\u5f00\u59cb\u7ed8\u5236\uff1f<\/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-52133","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52133","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=52133"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52133\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}