{"id":38189,"date":"2022-11-02T02:14:07","date_gmt":"2023-09-27T11:41:22","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90react%e3%80%91%e5%ad%a6%e4%b9%a0react%e7%9a%84state%ef%bc%8c%e5%90%8c%e6%97%b6%e5%88%b6%e4%bd%9c%e6%98%9f%e7%ba%a7%e8%af%84%e4%bb%b7%ef%bc%81%ef%bc%81\/"},"modified":"2024-04-28T22:32:38","modified_gmt":"2024-04-28T14:32:38","slug":"%e3%80%90react%e3%80%91%e5%ad%a6%e4%b9%a0react%e7%9a%84state%ef%bc%8c%e5%90%8c%e6%97%b6%e5%88%b6%e4%bd%9c%e6%98%9f%e7%ba%a7%e8%af%84%e4%bb%b7%ef%bc%81%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90react%e3%80%91%e5%ad%a6%e4%b9%a0react%e7%9a%84state%ef%bc%8c%e5%90%8c%e6%97%b6%e5%88%b6%e4%bd%9c%e6%98%9f%e7%ba%a7%e8%af%84%e4%bb%b7%ef%bc%81%ef%bc%81\/","title":{"rendered":"\u3010React\u3011\u5b66\u4e60React\u7684state\uff0c\u540c\u65f6\u5236\u4f5c\u661f\u7ea7\u8bc4\u4ef7\uff01\uff01"},"content":{"rendered":"<h1>\u3010React\u3011\u5b66\u4e60React\u72b6\u6001\uff0c\u5236\u4f5c\u661f\u7ea7\u8bc4\u4ef7\uff01\uff01<\/h1>\n<h2>\u9996\u5148<\/h2>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u521d\u5b66\u8005\u5b66\u4e60\u5e76\u7559\u4e0b\u4f5c\u4e3a\u8f93\u51fa\u7684\u6587\u7ae0\u3002\u6211\u5e0c\u671b\u80fd\u5bf9\u9047\u5230\u540c\u6837\u95ee\u9898\u7684\u4eba\u6709\u6240\u5e2e\u52a9\u3002\u7531\u4e8e\u4e4b\u524d\u5df2\u7ecf\u5728\u7ec3\u4e60\u4e2d\u7528React\u521b\u5efa\u4e86\u4e00\u4e9b\u7b80\u5355\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u6240\u4ee5\u6211\u9009\u62e9\u4e86\u4f7f\u7528create-react-app\u5feb\u901f\u521b\u5efa\u5e76\u6267\u884c\u3002<\/p>\n<p>\u8fd0\u884c\u73af\u5883<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">M1 Mac<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">node v16.15.0<\/ul>\n<h2>\u76ee\u5f55<\/h2>\n<p>\u8fd9\u6b21\u6211\u5e0c\u671b\u80fd\u591f\u5feb\u901f\u8fdb\u884c\u64cd\u4f5c\u786e\u8ba4\uff0c\u6240\u4ee5\u5c06\u4e0b\u9762\u7684\u6240\u6709\u5185\u5bb9\u90fd\u76f4\u63a5\u653e\u5165src\u4e2d\u3002\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u5c06\u5176\u653e\u5165component\u76ee\u5f55\u4e2d\u5e76\u4e14\u81ea\u5df1\u8f7b\u677e\u4f7f\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code>create-react-app\r\n    \u251c node_modules\r\n    \u251c public\r\n    \u2514  src\r\n       \u251c Star.js\r\n       \u251c StarRating.js\r\n       \u2514 index.js\r\n<\/code><\/pre>\n<h2>\u51c6\u5907\u5236\u4f5c<\/h2>\n<p>\u9996\u5148\uff0c\u6211\u5011\u5275\u5efa\u7684\u90e8\u5206\u662f\u95dc\u65bcReact\u624b\u628a\u624b\u5b78\u7fd2\u7684\u7b2c6\u7ae0\u72c0\u614b\u7ba1\u7406\u3002\u8acb\u4f7f\u7528create-react-app\u5275\u5efa\u6a21\u677f\uff0c\u63a5\u4e0b\u4f86\u6e96\u5099\u4e0b\u65b9\u6240\u793a\u7684\u661f\u661f\u5716\u6a19\u4ee5\u4f9b\u672c\u6b21\u4f7f\u7528\u3002\u9019\u5c07\u662f\u4e00\u500b\u53ef\u4ee5\u4f7f\u7528\u5404\u7a2e\u5716\u6a19\u7684\u5eab\u3002<\/p>\n<pre class=\"post-pre\"><code>npm i react-icons\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u8bf7\u6309\u7167\u76ee\u5f55\u7ed3\u6784\u521b\u5efaStar.js\u548cStarRating.js\u6587\u4ef6\u3002<\/p>\n<h2>\u6682\u65f6\u5c1d\u8bd5\u663e\u793a\u661f\u661f<\/h2>\n<p>\u9996\u5148\uff0c\u4f7f\u7528\u5b89\u88c5\u7684\u56fe\u6807\u6765\u663e\u793a\u661f\u7ea7\u8bc4\u5206\u3002\u8bf7\u5728\u4e4b\u524d\u521b\u5efa\u7684StarRating\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1aimport { FaStar } from &#8220;react-icons\/fa&#8221;\u3002\u8fd9\u90e8\u5206\u4ee3\u7801\u662f\u7528\u4e8e\u52a0\u8f7d\u4e4b\u524d\u5b89\u88c5\u7684\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"nx\">React<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">react<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">FaStar<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">react-icons\/fa<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"k\">default<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">StarRating<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">red<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">red<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">red<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">grey<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">grey<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span>\r\n  <span class=\"p\">];<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u80fd\u591f\u63cf\u8ff0\u6e05\u695a\uff0c\u5c31\u5728index.js\u6587\u4ef6\u4e2d\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8ffd\u52a0\u4ee3\u7801\u6765\u5f15\u5165StarRating\u6587\u4ef6\u3002\u7136\u540e\uff0c\u8bf7\u5c06root.render\u4e4b\u540e\u7684App\u90e8\u5206\u66f4\u6539\u4e3aStarRating\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"nx\">StarRating<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">'<\/span><span class=\"s1\">.\/StarRating<\/span><span class=\"dl\">'<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d32e537434c4406c63a3e\/17-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2023-05-14 20.34.15.png\" \/><\/div>\n<h2>\u4f7f\u7528State\u6765\u7ba1\u7406\u661f\u7403\u7684\u72b6\u6001<\/h2>\n<p>\u90a3\u4e48\u9996\u5148\u8ba9\u8fd9\u9897\u661f\u7403\u80fd\u591f\u79fb\u52a8\u8d77\u6765\u3002<\/p>\n<h3>\u661f\u7ea7\u8bc4\u5206.js<\/h3>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"nx\">React<\/span><span class=\"p\">,<\/span> <span class=\"p\">{<\/span><span class=\"nx\">useState<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">react<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">Star<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">.\/Star<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"k\">default<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">StarRating<\/span><span class=\"p\">({<\/span> <span class=\"nx\">totalStars<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">5<\/span> <span class=\"p\">})<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">selectedStars<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setSelectedStars<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\r\n  <span class=\"k\">return <\/span><span class=\"p\">(<\/span>\r\n    <span class=\"o\">&lt;&gt;<\/span>\r\n      <span class=\"p\">{[...<\/span><span class=\"nc\">Array<\/span><span class=\"p\">(<\/span><span class=\"nx\">totalStars<\/span><span class=\"p\">)].<\/span><span class=\"nf\">map<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">,<\/span> <span class=\"nx\">i<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n        <span class=\"o\">&lt;<\/span><span class=\"nx\">Star<\/span>\r\n          <span class=\"nx\">key<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">i<\/span><span class=\"p\">}<\/span>\r\n          <span class=\"nx\">selected<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">selectedStars<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nx\">i<\/span><span class=\"p\">}<\/span>\r\n          <span class=\"nx\">onSelect<\/span><span class=\"o\">=<\/span><span class=\"p\">{()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nf\">setSelectedStars<\/span><span class=\"p\">(<\/span><span class=\"nx\">i<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)}<\/span>\r\n        <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span>      <span class=\"p\">))}<\/span>\r\n      <span class=\"o\">&lt;<\/span><span class=\"nx\">p<\/span><span class=\"o\">&gt;<\/span>\r\n        <span class=\"p\">{<\/span><span class=\"nx\">selectedStars<\/span><span class=\"p\">}<\/span> <span class=\"k\">of<\/span> <span class=\"p\">{<\/span><span class=\"nx\">totalStars<\/span><span class=\"p\">}<\/span> <span class=\"nx\">stars<\/span>\r\n      <span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>    <span class=\"o\">&lt;<\/span><span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>Star.js \u661f\u661f.js<\/h3>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span> <span class=\"nx\">FaStar<\/span> <span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">react-icons\/fa<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"nx\">React<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">react<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">Star<\/span> <span class=\"o\">=<\/span> <span class=\"p\">({<\/span><span class=\"nx\">selected<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"nx\">onSelect<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">f<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">f<\/span> <span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"k\">return<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">selected<\/span> <span class=\"p\">?<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">red<\/span><span class=\"dl\">\"<\/span> <span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">grey<\/span><span class=\"dl\">\"<\/span><span class=\"p\">}<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">onSelect<\/span><span class=\"p\">}<\/span> <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">)<\/span>\r\n<span class=\"p\">};<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u80fd\u628a\u8fd9\u4e9b\u5185\u5bb9\u5199\u5728\u9644\u5e26\u7684\u6587\u4ef6\u4e2d\uff0c\u90a3\u4e48\u521d\u6b65\u7684\u7b80\u6613\u661f\u7ea7\u8bc4\u4ef7\u5c31\u5b8c\u6210\u4e86\uff01\u63a5\u4e0b\u6765\u6211\u4eec\u4f1a\u8be6\u7ec6\u770b\u770b\u90fd\u505a\u4e86\u54ea\u4e9b\u4e8b\u60c5\uff01<\/p>\n<h2>StarRating\u6587\u4ef6\u8bf4\u660e<\/h2>\n<p>\u8fd9\u4e2a\u6587\u4ef6\u5c06\u6210\u4e3a\u672c\u6b21\u7684\u4e3b\u8981\u6587\u4ef6\u3002\u4e0b\u9762\u7684\u90e8\u5206\u9996\u5148\u662fstate\u7684\u5b9a\u4e49\u3002<br \/>\nselectedStars\u5c06\u6210\u4e3a\u4e00\u4e2a\u53d8\u91cf\uff0c\u5e76\u4e14\u7528\u8fd9\u4e2a\u53d8\u91cf\u6765\u7ba1\u7406\u661f\u661f\u7684\u72b6\u6001\u3002setSelectedStars\u5c06\u6210\u4e3aselectedStars\u7684\u4e00\u4e2a\u51fd\u6570\u3002\u547d\u540d\u53ef\u4ee5\u81ea\u7531\u9009\u62e9\uff0c\u4f46\u57fa\u672c\u4e0a\u662f\u5728\u58f0\u660e\u53d8\u91cf\u65f6\u52a0\u4e0a&#8221;set&#8221;\u524d\u7f00\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5b83\u88ab\u8bbe\u5b9a\u4e3a0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">selectedStars<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setSelectedStars<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nf\">useState<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728\u4ee5\u4e0b\u90e8\u5206\u4e2d\uff0ctotalStars=5\u662f\u63a5\u6536\u7684\u53c2\u6570\uff0c\u7136\u540e\u6211\u4eec\u4f7f\u7528[&#8230;Array(totalStars)].map((n, i)\u6765\u5c55\u5f00\u5e76\u751f\u6210\u4e0e\u5143\u7d20\u6570\u91cf\u76f8\u540c\u7684\u661f\u661f\u3002map\u51fd\u6570\u662f\u4e00\u4e2a\u8fed\u4ee3\u51fd\u6570\uff0c\u5b83\u4f1a\u9010\u4e2a\u63d0\u53d6\u5185\u5bb9\u5e76\u8fdb\u884c\u540e\u7eed\u5904\u7406\u3002<br \/>\n\u4f5c\u4e3a\u540e\u7eed\u5904\u7406\uff0c\u6211\u4eec\u4f1a\u9010\u4e2a\u5c06\u5b83\u4eec\u7ed8\u5236\u4e3aStar\u7ec4\u4ef6\u3002selected={selectedStars &gt; i}\u4f1a\u5224\u65adi\u662f\u5426\u5927\u4e8e\u8fed\u4ee3\u5904\u7406\u7684\u6b21\u6570\u3002<br \/>\nonSelect={() =&gt; setSelectedStars(i + 1)}\u4f1a\u5728\u88ab\u70b9\u51fb\u65f6\u52a01\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">{[...<\/span><span class=\"nc\">Array<\/span><span class=\"p\">(<\/span><span class=\"nx\">totalStars<\/span><span class=\"p\">)].<\/span><span class=\"nf\">map<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">,<\/span> <span class=\"nx\">i<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">Star<\/span>\r\n    <span class=\"nx\">key<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">i<\/span><span class=\"p\">}<\/span>\r\n    <span class=\"nx\">selected<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">selectedStars<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nx\">i<\/span><span class=\"p\">}<\/span>\r\n    <span class=\"nx\">onSelect<\/span><span class=\"o\">=<\/span><span class=\"p\">{()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nf\">setSelectedStars<\/span><span class=\"p\">(<\/span><span class=\"nx\">i<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">)}<\/span>\r\n  <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span><span class=\"p\">))}<\/span>\r\n<\/code><\/pre>\n<h2>\u661f\u661f\u6587\u4ef6\u7684\u8bf4\u660e<\/h2>\n<p>\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d\uff0c\u5148\u524d\u7684selected\u548conSelect\u5c5e\u6027\u5df2\u88ab\u6dfb\u52a0\uff0c\u5e76\u4e14onClick={onSelect}\u6210\u4e3a\u5224\u65ad\u662f\u5426\u88ab\u70b9\u51fb\u7684\u90e8\u5206\u3002\u8fd9\u4e2aStarRating\u7ec4\u4ef6\u63a5\u6536props\uff0c\u5e76\u4e14\u5f53selected\u88ab\u63a5\u6536\u65f6\uff0c\u9ed8\u8ba4\u503c\u4e3afalse\u3002\u7136\u540e\u7531color={selected ? &#8220;red&#8221; : &#8220;grey&#8221;}\u8fdb\u884c\u5224\u65ad\u3002A ? &#8220;&#8221; \uff1a &#8220;&#8221;\u662f\u4e00\u4e2a\u6761\u4ef6\u8bed\u53e5\uff0c\u5f53A\u4e3a\u771f\u65f6\u6267\u884c\u5192\u53f7\u5de6\u8fb9\u7684\u4ee3\u7801\uff0c\u5426\u5219\u6267\u884c\u5192\u53f7\u53f3\u8fb9\u7684\u4ee3\u7801\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u7528\u5b83\u6765\u5206\u5c90\u989c\u8272\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">export<\/span> <span class=\"kd\">const<\/span> <span class=\"nx\">Star<\/span> <span class=\"o\">=<\/span> <span class=\"p\">({<\/span><span class=\"nx\">selected<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">false<\/span><span class=\"p\">,<\/span> <span class=\"nx\">onSelect<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">f<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">f<\/span> <span class=\"p\">})<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">FaStar<\/span> <span class=\"nx\">color<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">selected<\/span> <span class=\"p\">?<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">red<\/span><span class=\"dl\">\"<\/span> <span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">grey<\/span><span class=\"dl\">\"<\/span><span class=\"p\">}<\/span> <span class=\"nx\">onClick<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"nx\">onSelect<\/span><span class=\"p\">}<\/span> <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u5728\u8fd9\u90e8\u5206\u4e4b\u540e\u5c0f\u5fc3\u62ec\u53f7\u3002\u6211\u4e00\u76f4\u7528{}\u8fdb\u884c\u64cd\u4f5c\uff0c\u6240\u4ee5\u6ca1\u8fd4\u56de\u7ed3\u679c\uff0c\u8ba9\u6211\u56f0\u60d1\u4e86\u5927\u7ea6\u5341\u5206\u949f&#8230;\u54c8\u54c8<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d32e537434c4406c63a3e\/34-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2023-05-14 21.24.46.png\" \/><\/div>\n<h2>\u603b\u4e4b<\/h2>\n<p>\u611f\u8c22\u60a8\u89c2\u770b\u76f4\u5230\u6700\u540e\u3002<br \/>\n\u7531\u4e8e\u6211\u8fd8\u662f\u4e00\u4e2a\u521d\u5b66\u8005\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u4e0d\u8db3\u4e4b\u5904\uff0c\u5e0c\u671b\u80fd\u591f\u5f97\u5230\u60a8\u7684\u6559\u8bf2\u3002<br \/>\n\u6211\u76ee\u524d\u6b63\u5728\u4ee5\u4e0b\u8457\u4f5c\u4e2d\u5b66\u4e60\uff0c\u5e76\u5c06\u8fd9\u6b21\u5b66\u4e60\u4f5c\u4e3a\u4e00\u7bc7\u6587\u7ae0\u8fdb\u884c\u8f93\u51fa\u3002<br \/>\n\u5982\u679c\u60a8\u5bf9\u4ee5\u4e0b\u94fe\u63a5\u611f\u5174\u8da3\uff0c\u8bf7\u8fdb\u884c\u8d2d\u4e70\uff01<\/p>\n<p>\u53cd\u5e94\u5f0f\u5b9e\u6218\u5b66\u4e60\u7b2c\u4e8c\u7248<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010React\u3011\u5b66\u4e60React\u72b6\u6001\uff0c\u5236\u4f5c\u661f\u7ea7\u8bc4\u4ef7\uff01\uff01 \u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662f\u521d\u5b66\u8005\u5b66\u4e60\u5e76\u7559\u4e0b\u4f5c\u4e3a\u8f93\u51fa\u7684\u6587\u7ae0\u3002\u6211\u5e0c\u671b\u80fd\u5bf9 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38189","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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