{"id":6498,"date":"2025-05-30T13:53:42","date_gmt":"2025-06-04T06:43:42","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=6498"},"modified":"2025-06-04T13:53:42","modified_gmt":"2025-06-04T06:43:42","slug":"%e4%bd%bf%e7%94%a8react-js%e6%b1%82%e5%8f%96reactlist%e4%b8%ad%e7%9a%84%e5%b9%b3%e5%9d%87%e6%95%b0-2","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/react-js\/%e4%bd%bf%e7%94%a8react-js%e6%b1%82%e5%8f%96reactlist%e4%b8%ad%e7%9a%84%e5%b9%b3%e5%9d%87%e6%95%b0-2\/","title":{"rendered":"\u4f7f\u7528 React.JS \u8a08\u7b97\u5217\u8868\u7684\u5e73\u5747\u503c\uff1a2025 \u6700\u65b0\u6559\u5b78"},"content":{"rendered":"

<\/p>\n

\u4f7f\u7528 React.JS \u8a08\u7b97\u5217\u8868\u7684\u5e73\u5747\u503c(mean)<\/h1>\n

React.JS \u662f\u4e00\u500b\u6d41\u884c\u7684 JavaScript \u5eab\uff0c\u5c08\u9580\u7528\u65bc\u69cb\u5efa\u7528\u6236\u7aef\u61c9\u7528\u7a0b\u5e8f\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u5feb\u901f\u4e14\u9ad8\u6548\u5730\u5275\u5efa\u9ad8\u54c1\u8cea\u7684\u7528\u6236\u754c\u9762\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 React.JS \u8a08\u7b97\u4e00\u500b\u6578\u5b57\u5217\u8868\u7684\u5e73\u5747\u503c\uff0c\u4e26\u63d0\u4f9b 2025 \u5e74\u6700\u65b0\u7684\u8a9e\u6cd5\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n

\u5b89\u88dd React.JS<\/h2>\n

\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5b89\u88dd React.JS\u3002\u53ef\u4ee5\u4f7f\u7528 npm \u6216 yarn \u9032\u884c\u5b89\u88dd\uff1a<\/p>\n

“`bash
\nnpm install react react-dom
\n# \u6216\u8005
\nyarn add react react-dom
\n“`<\/p>\n

\u78ba\u4fdd\u4f60\u4e5f\u5b89\u88dd\u4e86 `react-dom`\uff0c\u56e0\u70ba\u5b83\u662f React \u61c9\u7528\u7a0b\u5e8f\u7684\u6838\u5fc3\u7d44\u4ef6\u4e4b\u4e00\u3002<\/p>\n

\u5275\u5efa React List<\/h2>\n

\u63a5\u4e0b\u4f86\uff0c\u8b93\u6211\u5011\u5275\u5efa\u4e00\u500b\u6578\u5b57\u5217\u8868\u4e26\u6dfb\u52a0\u6578\u64da\u3002\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n

“`javascript
\nconst list = [1, 2, 3, 4, 5];
\n“`<\/p>\n

\u8a08\u7b97\u5e73\u5747\u503c<\/h2>\n

\u73fe\u5728\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 React.JS \u4f86\u8a08\u7b97\u9019\u500b\u5217\u8868\u7684\u5e73\u5747\u503c\u3002\u53ef\u4ee5\u901a\u904e `reduce()` \u65b9\u6cd5\u4f86\u5be6\u73fe\uff1a<\/p>\n

“`javascript
\nconst mean = list.reduce((accumulator, currentValue) => accumulator + currentValue, 0) \/ list.length;
\n“`<\/p>\n

\u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528 `reduce()` \u65b9\u6cd5\u5c07\u5217\u8868\u4e2d\u7684\u6240\u6709\u6578\u5b57\u76f8\u52a0\uff0c\u7136\u5f8c\u7528\u7e3d\u548c\u9664\u4ee5\u5217\u8868\u7684\u9577\u5ea6\u4ee5\u8a08\u7b97\u5e73\u5747\u503c\u3002\u9019\u6a23\u6211\u5011\u5c31\u5f97\u5230\u4e86\u5217\u8868\u7684\u5e73\u5747\u503c\u3002<\/p>\n

\u5b8c\u6574\u7bc4\u4f8b<\/h2>\n

\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684 React \u7d44\u4ef6\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c07\u4e0a\u8ff0\u4ee3\u78bc\u6574\u5408\u5230\u4e00\u500b React \u61c9\u7528\u7a0b\u5e8f\u4e2d\uff1a<\/p>\n

“`javascript
\nimport React from ‘react’;<\/p>\n

const AverageCalculator = () => {
\n const list = [1, 2, 3, 4, 5];
\n const mean = list.reduce((accumulator, currentValue) => accumulator + currentValue, 0) \/ list.length;<\/p>\n

return (<\/p>\n

\n

\u5217\u8868\u6578\u64da\uff1a{JSON.stringify(list)}<\/h2>\n

\u5e73\u5747\u503c\uff1a{mean}<\/h3>\n<\/p><\/div>\n

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

export default AverageCalculator;
\n“`<\/p>\n

\u9019\u500b\u7bc4\u4f8b\u5c07\u8a08\u7b97\u7684\u5e73\u5747\u503c\u986f\u793a\u5728\u7db2\u9801\u4e0a\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u6700\u4f73\u5be6\u8e10<\/h2>\n

\u5728\u8a08\u7b97\u5e73\u5747\u503c\u7684\u904e\u7a0b\u4e2d\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u932f\u8aa4\uff1a<\/p>\n

1. **\u5217\u8868\u70ba\u7a7a**\uff1a\u5728\u8a08\u7b97\u5e73\u5747\u503c\u4e4b\u524d\uff0c\u78ba\u4fdd\u5217\u8868\u4e0d\u70ba\u7a7a\uff0c\u5426\u5247\u5c07\u5c0e\u81f4\u9664\u4ee5\u96f6\u7684\u932f\u8aa4\u3002
\n2. **\u6578\u64da\u985e\u578b\u4e0d\u4e00\u81f4**\uff1a\u78ba\u4fdd\u5217\u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\u90fd\u662f\u6578\u5b57\u985e\u578b\uff0c\u5426\u5247\u8a08\u7b97\u7d50\u679c\u6703\u4e0d\u6b63\u78ba\u3002<\/p>\n

\u6700\u4f73\u5be6\u8e10\u662f\u52a0\u5165\u985e\u578b\u6aa2\u67e5\uff0c\u78ba\u4fdd\u50b3\u5165\u6578\u64da\u7684\u6b63\u78ba\u6027\uff1a<\/p>\n

“`javascript
\nconst isNumber = (value) => typeof value === ‘number’;<\/p>\n

if (list.every(isNumber)) {
\n const mean = list.reduce((accumulator, currentValue) => accumulator + currentValue, 0) \/ list.length;
\n \/\/ \u4f7f\u7528 mean
\n} else {
\n console.error(“\u5217\u8868\u4e2d\u5305\u542b\u975e\u6578\u5b57\u5143\u7d20\uff01”);
\n}
\n“`<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

\u9664\u4e86\u8a08\u7b97\u5e73\u5747\u503c\uff0c\u60a8\u9084\u53ef\u4ee5\u64f4\u5c55\u6b64\u529f\u80fd\uff0c\u8a08\u7b97\u4e2d\u4f4d\u6578\u3001\u773e\u6578\u7b49\u5176\u4ed6\u7d71\u8a08\u6307\u6a19\u3002\u9019\u53ef\u4ee5\u901a\u904e\u6539\u8b8a\u8a08\u7b97\u908f\u8f2f\u4f86\u5be6\u73fe\u3002<\/p>\n

\u5982\u679c\u60a8\u5c0d Python \u4e2d\u7684\u6578\u64da\u8655\u7406\u611f\u8208\u8da3\uff0c\u8acb\u53c3\u8003[\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/647f6c8a9f0a3b001c6d7e0b)\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n

\u7d50\u8ad6<\/h2>\n

\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 React.JS \u4f86\u8a08\u7b97\u6578\u5b57\u5217\u8868\u7684\u5e73\u5747\u503c\u3002\u900f\u904e\u4f7f\u7528 `reduce()` \u65b9\u6cd5\uff0c\u6211\u5011\u80fd\u5920\u8f15\u9b06\u5730\u7372\u5f97\u6240\u9700\u7684\u8a08\u7b97\u7d50\u679c\u3002\u5e0c\u671b\u9019\u7bc7\u6559\u5b78\u80fd\u5e6b\u52a9\u60a8\u5728\u958b\u767c\u4e2d\u66f4\u597d\u5730\u4f7f\u7528 React.JS\u3002<\/p>\n

\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff08Q&A\uff09<\/h2>\n

**Q1: \u5982\u4f55\u8655\u7406\u7a7a\u5217\u8868\u7684\u5e73\u5747\u503c\u8a08\u7b97\uff1f**
\nA1: \u5728\u8a08\u7b97\u5e73\u5747\u503c\u4e4b\u524d\uff0c\u6aa2\u67e5\u5217\u8868\u662f\u5426\u70ba\u7a7a\uff0c\u82e5\u70ba\u7a7a\u5247\u8fd4\u56de 0 \u6216\u63d0\u793a\u7528\u6236\u3002<\/p>\n

**Q2: \u5217\u8868\u4e2d\u6709\u975e\u6578\u5b57\u5143\u7d20\u6642\u8a72\u600e\u9ebc\u8fa6\uff1f**
\nA2: \u4f7f\u7528\u6aa2\u67e5\u51fd\u6578\u78ba\u8a8d\u5217\u8868\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u662f\u6578\u5b57\uff0c\u82e5\u6709\u975e\u6578\u5b57\u5143\u7d20\uff0c\u5247\u986f\u793a\u932f\u8aa4\u8a0a\u606f\u3002<\/p>\n

**Q3: \u9664\u4e86\u5e73\u5747\u503c\uff0c\u5982\u4f55\u8a08\u7b97\u5176\u4ed6\u7d71\u8a08\u6578\u64da\uff1f**
\nA3: \u53ef\u4ee5\u4f7f\u7528\u985e\u4f3c\u7684\u908f\u8f2f\uff0c\u4f7f\u7528 `sort()` \u4f86\u8a08\u7b97\u4e2d\u4f4d\u6578\uff0c\u6216\u4f7f\u7528\u4e00\u500b\u7269\u4ef6\u4f86\u7d71\u8a08\u5404\u500b\u6578\u5b57\u7684\u51fa\u73fe\u6b21\u6578\u4f86\u8a08\u7b97\u773e\u6578\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528React.JS\u6c42\u53d6ReactList\u4e2d\u7684\u5e73\u5747\u6570\uff0c\u4e26\u63d0\u4f9b\u7c21\u55ae\u6613\u61c2\u7684\u7a0b\u5f0f\u78bc\u793a\u4f8b\uff0c\u8b93\u5b78\u751f\u80fd\u5920\u5feb\u901f\u638c\u63e1\u6c42\u53d6\u5e73\u5747\u6578\u7684\u65b9\u6cd5\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-6498","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\/pcFK27-1GO","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6498","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=6498"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6498\/revisions"}],"predecessor-version":[{"id":6499,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/6498\/revisions\/6499"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=6498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=6498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=6498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}