{"id":5745,"date":"2023-01-06T14:52:47","date_gmt":"2023-01-06T06:52:47","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=5745"},"modified":"2023-01-06T14:52:47","modified_gmt":"2023-01-06T06:52:47","slug":"%e4%bd%bf%e7%94%a8react-js%e5%88%a4%e6%96%b7%e5%a5%87%e6%95%b8%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/react-js\/%e4%bd%bf%e7%94%a8react-js%e5%88%a4%e6%96%b7%e5%a5%87%e6%95%b8%e7%9a%84%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u4f7f\u7528React.JS\u5224\u65b7\u5947\u6578\u7684\u65b9\u6cd5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"React, React List, isOdd\"><\/p>\n<h1>\u4f7f\u7528 React.JS \u5224\u65b7 React List \u662f\u5426\u70ba\u5947\u6570(isOdd)<\/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\u5728 React.JS \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 React List \u4f86\u5275\u5efa\u4e00\u500b\u5217\u8868\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 isOdd \u51fd\u6578\u4f86\u5224\u65b7\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u5426\u70ba\u5947\u6578\u3002<\/p>\n<p><!--more--><\/p>\n<p>\u5728 React.JS \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 <code>React.createElement()<\/code> \u4f86\u5275\u5efa\u4e00\u500b React List\uff0c\u4e26\u4e14\u53ef\u4ee5\u4f7f\u7528 <code>React.Children.map()<\/code> \u4f86\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>React.Children.map()<\/code> \u4f86\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c isOdd \u5224\u65b7\uff1a<\/p>\n<pre class=\"brush: javascript\">\nconst list = React.createElement(\n  'ul',\n  null,\n  React.Children.map([1, 2, 3, 4, 5], (item) => {\n    return React.createElement('li', { isOdd: item % 2 === 1 }, item);\n  })\n);\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>React.Children.map()<\/code> \u4f86\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c isOdd \u5224\u65b7\uff0c\u4e26\u4e14\u5c07 isOdd \u7684\u7d50\u679c\u4f5c\u70ba\u4e00\u500b\u5c6c\u6027\u6dfb\u52a0\u5230\u6bcf\u500b\u5143\u7d20\u4e2d\u3002<\/p>\n<p>\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>React.Children.forEach()<\/code> \u4f86\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c isOdd \u5224\u65b7\uff1a<\/p>\n<pre class=\"brush: javascript\">\nReact.Children.forEach(list.props.children, (item) => {\n  if (item.props.isOdd) {\n    console.log(`<span class=\"katex math inline\">{item.props.children} is odd`);\n  } else {\n    console.log(`<\/span>{item.props.children} is even`);\n  }\n});\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 <code>React.Children.forEach()<\/code> \u4f86\u5c0d\u5217\u8868\u4e2d\u7684\u6bcf\u500b\u5143\u7d20\u9032\u884c isOdd \u5224\u65b7\uff0c\u4e26\u4e14\u5c07 isOdd \u7684\u7d50\u679c\u8f38\u51fa\u5230\u63a7\u5236\u53f0\u4e2d\u3002<\/p>\n<p>\u7e3d\u7d50\uff0c\u4f7f\u7528 React.JS \u4e2d\u7684 React List \u548c isOdd \u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5224\u65b7\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u5426\u70ba\u5947\u6578\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528React.JS\u7684isOdd()\u51fd\u6578\u4f86\u5224\u65b7\u4e00\u500b\u6578\u5b57\u662f\u5426\u70ba\u5947\u6578\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u7c21\u55ae\u7684\u7bc4\u4f8b\u4f86\u8a73\u7d30\u8aaa\u660e\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-5745","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\/pcFK27-1uF","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5745","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=5745"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5745\/revisions"}],"predecessor-version":[{"id":5746,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/5745\/revisions\/5746"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=5745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=5745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=5745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}