{"id":53408,"date":"2024-12-03T17:59:45","date_gmt":"2024-12-03T09:59:45","guid":{"rendered":"https:\/\/fwq.ai\/blog\/53408\/"},"modified":"2024-12-03T17:59:45","modified_gmt":"2024-12-03T09:59:45","slug":"%e5%bb%b6%e8%bf%9f%e5%8a%a0%e8%bd%bd%e5%92%8c%e8%ae%b0%e5%bf%86%e5%8c%96-reactjs-%e7%ac%ac-1-%e9%83%a8%e5%88%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/53408\/","title":{"rendered":"\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206"},"content":{"rendered":"

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

\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u300a\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206\u300b<\/span>\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n

\"\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316|<\/p>\n

ReactJS \u4e0a\u4e0b\u6587\u4e2d\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316\u7684\u6bd4\u8f83\uff0c\u5305\u62ec\u5b9a\u4e49\u3001\u7528\u4f8b\u548c\u793a\u4f8b\uff1a<\/p>\n

\n

\u5ef6\u8fdf\u52a0\u8f7d<\/p>\n

\u5b9a\u4e49<\/p>\n

React \u4e2d\u7684\u5ef6\u8fdf\u52a0\u8f7d\u662f\u6307\u4ec5\u5728\u9700\u8981\u65f6\u52a0\u8f7d\u7ec4\u4ef6\u6216\u8d44\u6e90\u7684\u505a\u6cd5\uff0c\u800c\u4e0d\u662f\u5728\u521d\u59cb\u9875\u9762\u52a0\u8f7d\u65f6\u52a0\u8f7d\u3002\u8fd9\u51cf\u5c11\u4e86\u521d\u59cb\u52a0\u8f7d\u65f6\u95f4\u5e76\u63d0\u9ad8\u4e86\u6027\u80fd\u3002<\/p>\n

\u8981\u70b9<\/p>\n

\u76ee\u6807\uff1a\u51cf\u5c11\u521d\u59cb\u5305\u5927\u5c0f\u5e76\u4f18\u5316\u6027\u80fd\u3002<\/p>\n

\u4f7f\u7528\u65f6\uff1a\u5bf9\u4e8e\u4e0d\u7acb\u5373\u9700\u8981\u7684\u7ec4\u4ef6\u6216\u8d44\u4ea7\uff08\u4f8b\u5982\uff0c\u9690\u85cf\u9009\u9879\u5361\u4e2d\u7684\u6a21\u6001\u6216\u56fe\u50cf\uff09\u3002<\/p>\n

React \u529f\u80fd\uff1a\u4f7f\u7528 React.lazy \u548c Suspense \u5b9e\u73b0\u3002<\/p>\n

\u793a\u4f8b\uff1a\u5ef6\u8fdf\u52a0\u8f7d\u7ec4\u4ef6<\/p>\n

\u4ece ‘react’ \u5bfc\u5165 React, { Suspense };<\/p>\n

const HeavyComponent = React.lazy(() => import(‘.\/HeavyComponent’));<\/p>\n

const App = () => {
\u8fd4\u56de\uff08<\/p>\n

<\/p>\n

\u6b22\u8fce\u4f7f\u7528\u6211\u7684\u5e94\u7528\u7a0b\u5e8f<\/h2>\n

\u6b63\u5728\u52a0\u8f7d…}> <\/p>\n

);
\n
}; <\/p>\n

\u5bfc\u51fa\u9ed8\u8ba4\u5e94\u7528\u7a0b\u5e8f\uff1b<\/p>\n

\u884c\u4e3a\uff1aHeavyComponent \u4ec5\u5728\u6e32\u67d3\u65f6\u624d\u4f1a\u52a0\u8f7d\u3002<\/p>\n

\n

\u8bb0\u5fc6<\/p>\n

\u5b9a\u4e49<\/p>\n

React \u4e2d\u7684\u8bb0\u5fc6\u5316\u662f\u7f13\u5b58\u51fd\u6570\u6216\u7ec4\u4ef6\u6e32\u67d3\u7ed3\u679c\u7684\u8fc7\u7a0b\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u8ba1\u7b97\u6216\u91cd\u65b0\u6e32\u67d3\u3002\u5b83\u901a\u8fc7\u9632\u6b62\u5197\u4f59\u64cd\u4f5c\u6765\u5e2e\u52a9\u63d0\u9ad8\u6027\u80fd\u3002<\/p>\n

\u8981\u70b9<\/p>\n

\u76ee\u6807\uff1a\u907f\u514d\u6602\u8d35\u7684\u91cd\u65b0\u8ba1\u7b97\u6216\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n

\u4f7f\u7528\u65f6\uff1a\u5bf9\u4e8e\u8ba1\u7b97\u6210\u672c\u8f83\u9ad8\u7684\u51fd\u6570\u6216\u91cd\u590d\u63a5\u6536\u76f8\u540c props \u7684\u7ec4\u4ef6\u3002<\/p>\n

React \u529f\u80fd\uff1a\u4f7f\u7528 useMemo\u3001useCallback \u548c React.memo \u5b9e\u73b0\u3002<\/p>\n

\u793a\u4f8b\uff1a\u8bb0\u5fc6\u7ec4\u4ef6<\/p>\n

\u4ece ‘react’ \u5bfc\u5165 React, { useMemo };<\/p>\n

const ExpenseCalculation = ({ number }) => {
const \u8ba1\u7b97 = (num) => {
console.log(‘\u6b63\u5728\u8ba1\u7b97…’);
\u8fd4\u56de\u6570\u5b57*2\uff1b \/\/ \u6a21\u62df\u6602\u8d35\u7684\u64cd\u4f5c
};<\/p>\n

const result = useMemo(() =>calculate(number), [number]);<\/p>\n

\u8fd4\u56de<\/p>\n

\u7ed3\u679c\uff1a{\u7ed3\u679c};
\n
}; <\/p>\n

\u5bfc\u51fa\u9ed8\u8ba4\u7684 ExpenseCalculation;<\/p>\n

\u884c\u4e3a\uff1acalculate\u4ec5\u5728number\u5c5e\u6027\u6539\u53d8\u65f6\u6267\u884c\uff0c\u907f\u514d\u5197\u4f59\u8ba1\u7b97\u3002<\/p>\n

\n

\u4f55\u65f6\u4f7f\u7528\u6bcf\u4e2a\uff1f<\/p>\n

\u5ef6\u8fdf\u52a0\u8f7d\uff1a
\u5f53\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u5177\u6709\u53ef\u4ee5\u63a8\u8fdf\u5230\u9700\u8981\u65f6\u4f7f\u7528\u7684\u5927\u578b\u7ec4\u4ef6\u6216\u8d44\u6e90\uff08\u4f8b\u5982\u4eea\u8868\u677f\u56fe\u8868\u6216\u5305\u542b\u5927\u91cf\u56fe\u50cf\u7684\u56fe\u5e93\uff09\u65f6\u4f7f\u7528\u3002<\/p>\n

\u8bb0\u5fc6\uff1a
\u5f53\u60a8\u7684\u5e94\u7528\u7a0b\u5e8f\u6267\u884c\u91cd\u590d\u8ba1\u7b97\u6216\u7531\u4e8e\u9053\u5177\u6216\u72b6\u6001\u672a\u66f4\u6539\u800c\u4e0d\u5fc5\u8981\u5730\u91cd\u65b0\u6e32\u67d3\u7ec4\u4ef6\u65f6\u4f7f\u7528\u3002<\/p>\n

\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n

\u7248\u672c\u58f0\u660e \u672c\u6587\u8f6c\u8f7d\u4e8e\uff1adev.to \u5982\u6709\u4fb5\u72af\uff0c\u8bf7\u8054\u7cfb\u5220\u9664 <\/p>\n

\n
<\/dt>\n
\n Loadr\uff0c\u4e00\u79cd\u5728 HTML \u4e2d\u65e0\u7f1d\u52a0\u8f7d\u5927\u56fe\u50cf\u7684\u9ad8\u6548\u89e3\u51b3\u65b9\u6848\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206 \u6536\u85cf \u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u300a\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316| ReactJS |\u7b2c 1 \u90e8\u5206\u300b\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u6587\u7ae0\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01 ReactJS \u4e0a\u4e0b\u6587\u4e2d\u5ef6\u8fdf\u52a0\u8f7d\u548c\u8bb0\u5fc6\u5316\u7684\u6bd4\u8f83\uff0c\u5305\u62ec\u5b9a\u4e49\u3001\u7528\u4f8b\u548c\u793a\u4f8b\uff1a \u5ef6\u8fdf\u52a0\u8f7d \u5b9a\u4e49 React \u4e2d\u7684\u5ef6\u8fdf\u52a0\u8f7d\u662f\u6307\u4ec5\u5728\u9700\u8981\u65f6\u52a0\u8f7d\u7ec4\u4ef6\u6216\u8d44\u6e90\u7684\u505a\u6cd5\uff0c\u800c\u4e0d\u662f\u5728\u521d\u59cb\u9875\u9762\u52a0\u8f7d\u65f6\u52a0\u8f7d\u3002\u8fd9\u51cf\u5c11\u4e86\u521d\u59cb\u52a0\u8f7d\u65f6\u95f4\u5e76\u63d0\u9ad8\u4e86\u6027\u80fd\u3002 \u8981\u70b9 \u76ee\u6807\uff1a\u51cf\u5c11\u521d\u59cb\u5305\u5927\u5c0f\u5e76\u4f18\u5316\u6027\u80fd\u3002 \u4f7f\u7528\u65f6\uff1a\u5bf9\u4e8e\u4e0d\u7acb\u5373\u9700\u8981\u7684\u7ec4\u4ef6\u6216\u8d44\u4ea7\uff08\u4f8b\u5982\uff0c\u9690\u85cf\u9009\u9879\u5361\u4e2d\u7684\u6a21\u6001\u6216\u56fe\u50cf\uff09\u3002 React \u529f\u80fd\uff1a\u4f7f\u7528 React.lazy \u548c Suspense \u5b9e\u73b0\u3002 \u793a\u4f8b\uff1a\u5ef6\u8fdf\u52a0\u8f7d\u7ec4\u4ef6 \u4ece ‘react’ \u5bfc\u5165 React, { Suspense }; const HeavyComponent = React.lazy(() => import(‘.\/HeavyComponent’)); const App = () => { \u8fd4\u56de\uff08 \u6b22\u8fce\u4f7f\u7528\u6211\u7684\u5e94\u7528\u7a0b\u5e8f \u6b63\u5728\u52a0\u8f7d…}> ); }; \u5bfc\u51fa\u9ed8\u8ba4\u5e94\u7528\u7a0b\u5e8f\uff1b \u884c\u4e3a\uff1aHeavyComponent \u4ec5\u5728\u6e32\u67d3\u65f6\u624d\u4f1a\u52a0\u8f7d\u3002 \u8bb0\u5fc6 […]<\/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-53408","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53408","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=53408"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/53408\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=53408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=53408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=53408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}