{"id":38077,"date":"2023-04-16T19:29:43","date_gmt":"2023-10-03T15:36:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/react-typescript-%e5%9c%a8%e9%98%9f%e5%88%97%e4%b8%ad%e6%b7%bb%e5%8a%a0%e5%b9%b6%e5%a4%84%e7%90%86%e8%bf%9e%e7%bb%ad%e7%9a%84%e7%8a%b6%e6%80%81%e5%8f%98%e5%8c%96%e3%80%82\/"},"modified":"2024-04-29T23:49:43","modified_gmt":"2024-04-29T15:49:43","slug":"react-typescript-%e5%9c%a8%e9%98%9f%e5%88%97%e4%b8%ad%e6%b7%bb%e5%8a%a0%e5%b9%b6%e5%a4%84%e7%90%86%e8%bf%9e%e7%bb%ad%e7%9a%84%e7%8a%b6%e6%80%81%e5%8f%98%e5%8c%96%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/react-typescript-%e5%9c%a8%e9%98%9f%e5%88%97%e4%b8%ad%e6%b7%bb%e5%8a%a0%e5%b9%b6%e5%a4%84%e7%90%86%e8%bf%9e%e7%bb%ad%e7%9a%84%e7%8a%b6%e6%80%81%e5%8f%98%e5%8c%96%e3%80%82\/","title":{"rendered":"React + TypeScript: \u5728\u961f\u5217\u4e2d\u6dfb\u52a0\u5e76\u5904\u7406\u8fde\u7eed\u7684\u72b6\u6001\u53d8\u5316"},"content":{"rendered":"<p>React\u5b98\u65b9\u7f51\u7ad9\u7684\u6587\u6863\u5df2\u4e8e2023\u5e743\u670816\u65e5\u8fdb\u884c\u4e86\u4fee\u8ba2\uff08\u8bf7\u53c2\u8003\u300cIntroducing react.dev\u300d\uff09\u3002\u672c\u6587\u662f\u5bf9\u57fa\u672c\u89e3\u91ca\u4e2d\u300cQueueing a Series of State Updates\u300d\u7684\u7b80\u8981\u603b\u7ed3\u3002\u4f46\u662f\uff0c\u5728\u4ee3\u7801\u4e2d\u6dfb\u52a0\u4e86TypeScript\u3002\u4e0e\u6b64\u540c\u65f6\uff0c\u6211\u4eec\u7701\u7565\u4e86\u9762\u5411\u521d\u5b66\u8005\u7684JavaScript\u57fa\u7840\u89e3\u91ca\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u6709\u5173\u672c\u7cfb\u5217\u89e3\u8bf4\u7684\u5176\u4ed6\u6587\u7ae0\uff0c\u8bf7\u53c2\u8003&#8221;React + TypeScript:\u5b66\u4e60React\u5b98\u65b9\u6587\u6863\u7684\u57fa\u672c\u89e3\u8bf4\u300a\u5b66\u4e60React\u300b&#8221;\u3002<\/p>\n<p>\u8bbe\u7f6e\u72b6\u6001\u53d8\u91cf\u540e\uff0c\u6e32\u67d3\u5c06\u8fdb\u5165\u961f\u5217\u3002\u4f46\u5728\u4e0b\u4e00\u4e2a\u6e32\u67d3\u52a0\u5165\u961f\u5217\u4e4b\u524d\uff0c\u53ef\u80fd\u6709\u65f6\u6211\u4eec\u9700\u8981\u5728\u53d8\u91cf\u503c\u4e0a\u8fdb\u884c\u591a\u4e2a\u64cd\u4f5c\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff0c\u4e86\u89e3React\u5982\u4f55\u6279\u5904\u7406\u72b6\u6001\u66f4\u65b0\u5c06\u4f1a\u5f88\u6709\u5e2e\u52a9\u3002<\/p>\n<h1>\u7528React\u8fdb\u884c\u6279\u91cf\u5904\u7406\u7684\u72b6\u6001\u66f4\u65b0\u3002<\/h1>\n<p>\u4f8b\u5982\uff0c\u5f53\u70b9\u51fb[+3]\u6309\u94ae\u65f6\uff0c\u8ba1\u6570\u5668\u7684\u72b6\u6001\u53d8\u91cf\uff08number\uff09\u7684\u503c\u4f1a\u589e\u52a0\u591a\u5c11\u5462\uff1f\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7684Sample 001\u7684CodeSandbox\u4ee3\u7801\u6765\u786e\u8ba4\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">export<\/span> <span class=\"k\">default<\/span> <span class=\"kd\">function<\/span> <span class=\"nf\">Counter<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"kd\">const<\/span> <span class=\"p\">[<\/span><span class=\"nx\">number<\/span><span class=\"p\">,<\/span> <span class=\"nx\">setNumber<\/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\t<span class=\"k\">return <\/span><span class=\"p\">(<\/span>\r\n\t\t<span class=\"p\">&lt;&gt;<\/span>\r\n\t\t\t<span class=\"p\">&lt;<\/span><span class=\"nt\">h1<\/span><span class=\"p\">&gt;<\/span><span class=\"si\">{<\/span><span class=\"nx\">number<\/span><span class=\"si\">}<\/span><span class=\"p\">&lt;\/<\/span><span class=\"nt\">h1<\/span><span class=\"p\">&gt;<\/span>\r\n\t\t\t<span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span>\r\n\t\t\t\t<span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n\t\t\t\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"nx\">number<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t\t\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"nx\">number<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t\t\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"nx\">number<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t\t\t<span class=\"p\">}<\/span><span class=\"si\">}<\/span>\r\n\t\t\t<span class=\"p\">&gt;<\/span>\r\n\t\t\t\t+3\r\n\t\t\t<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n\t\t<span class=\"p\">&lt;\/&gt;<\/span>\r\n\t<span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h4>React + TypeScript\uff1a\u6309\u987a\u5e8f\u6392\u5217\u4e00\u7cfb\u5217\u72b6\u6001\u66f4\u65b0\u7684\u961f\u521701\u3002<\/h4>\n<p>&nbsp;<\/p>\n<p>\u6bcf\u6b21\u70b9\u51fb\u6309\u94ae\u65f6\uff0c\u5373\u4f7f\u8c03\u7528\u8bbe\u7f6e\u51fd\u6570setNumber(number + 1)\u4e09\u6b21\uff0c\u53d8\u91cf\u503c\u4e5f\u53ea\u4f1a\u9012\u589e1\u3002\u8fd9\u662f\u56e0\u4e3a\u72b6\u6001\u53d8\u91cf\u503c\u5728\u6bcf\u6b21\u6e32\u67d3\u65f6\u90fd\u662f\u56fa\u5b9a\u7684\uff08\u53c2\u89c1\u201c\u6e32\u67d3\u662f\u5f53\u524d\u5feb\u7167\u201d\uff09\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5f53\u9996\u6b21\u70b9\u51fb\u6309\u94ae\u5e76\u6e32\u67d3\u65f6\uff0c\u65e0\u8bba\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u5185\u8c03\u7528\u8bbe\u7f6e\u51fd\u6570(setNumber())\u591a\u5c11\u6b21\u8fdb\u884c\u7d2f\u52a0\uff0c\u76ee\u6807\u72b6\u6001\u53d8\u91cf(number)\u7684\u503c\u4ecd\u7136\u662f0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"mi\">0<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u91cc\u8fd8\u6709\u4e00\u4ef6\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u60c5\u3002React\u4f1a\u7b49\u5f85\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u7684\u4ee3\u7801\u5168\u90e8\u6267\u884c\u5b8c\u4e4b\u540e\u518d\u66f4\u65b0\u72b6\u6001\u3002\u56e0\u6b64\uff0c\u5728\u6240\u6709setNumber()\u7684\u8c03\u7528\u90fd\u7ed3\u675f\u4e4b\u540e\uff0c\u624d\u4f1a\u8fdb\u884c\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n<p>\u5728\u9910\u5385\u91cc\uff0c\u670d\u52a1\u5458\u63a5\u8ba2\u5355\u53ef\u80fd\u6709\u70b9\u50cf\u3002\u670d\u52a1\u5458\u4e0d\u4f1a\u6bcf\u6b21\u70b9\u4e00\u9053\u83dc\u90fd\u8981\u8dd1\u8fdb\u53a8\u623f\u3002\u4ed6\u4eec\u5e94\u8be5\u4f1a\u5148\u542c\u4e00\u904d\u684c\u4e0a\u7684\u8ba2\u5355\u3002\u5728\u8fd9\u671f\u95f4\uff0c\u4ed6\u4eec\u8fd8\u53ef\u4ee5\u63a5\u53d7\u66f4\u6539\u83dc\u54c1\u548c\u540c\u684c\u5176\u4ed6\u4eba\u7684\u8ba2\u5355\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d324437434c4406c617c2\/12-0.png\" alt=\"menu_tenin_yobu.png\" \/><\/div>\n<p>\u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u907f\u514d\u4e86\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u6e32\u67d3\uff0c\u53ef\u4ee5\u66f4\u65b0\u591a\u4e2a\u72b6\u6001\u53d8\u91cf\u3002\u5373\u4f7f\u6709\u591a\u4e2a\u7ec4\u4ef6\u4e5f\u662f\u4e00\u6837\u7684\u3002\u8fd9\u4e5f\u610f\u5473\u7740\u5728\u5904\u7406\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u548c\u5176\u4e2d\u7684\u4ee3\u7801\u4e4b\u524d\uff0cUI\u4e0d\u4f1a\u66f4\u65b0\u3002\u8fd9\u4e2a\u79f0\u4e3a&#8221;\u6279\u5904\u7406&#8221;\u7684\u529f\u80fd\u5927\u5927\u52a0\u5feb\u4e86React\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd0\u884c\u901f\u5ea6\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u907f\u514d\u4e00\u4e9b\u53d8\u91cf\u4fdd\u6301&#8221;\u4e0d\u5b8c\u6574&#8221;\u7684\u72b6\u6001\u800c\u8fdb\u884c\u6e32\u67d3\u3002<\/p>\n<p>\u7136\u800c\uff0cReact\u4e0d\u4f1a\u6279\u5904\u7406\u610f\u56fe\u660e\u786e\u7684\u4e8b\u4ef6\uff0c\u4f8b\u5982\u70b9\u51fb\u4e8b\u4ef6\u3002\u5b83\u4f1a\u5c06\u6bcf\u4e2a\u70b9\u51fb\u4e8b\u4ef6\u5355\u72ec\u5904\u7406\u3002React\u53ea\u5728\u4e00\u822c\u60c5\u51b5\u4e0b\u8ba4\u4e3a\u6279\u5904\u7406\u662f\u5b89\u5168\u7684\u3002\u6bd4\u5982\uff0c\u5982\u679c\u901a\u8fc7\u70b9\u51fb\u6309\u94ae\u7981\u7528\u8868\u5355\uff0c\u5728\u4e0b\u4e00\u4e2a\u70b9\u51fb\u4e2d\u5b83\u4e0d\u4f1a\u88ab\u63d0\u4ea4\u3002<\/p>\n<h1>\u6e32\u67d3\u524d\u591a\u6b21\u66f4\u65b0\u76f8\u540c\u7684\u72b6\u6001\u53d8\u91cf\u3002<\/h1>\n<p>\u867d\u7136\u5f88\u5c11\u4f7f\u7528\uff0c\u4f46\u5728\u8fdb\u884c\u6e32\u67d3\u4e4b\u524d\uff0c\u4e0d\u662f\u4e0d\u80fd\u591a\u6b21\u66f4\u65b0\u76f8\u540c\u7684\u72b6\u6001\u53d8\u91cf\u3002\u4e0b\u4e00\u4e2a\u72b6\u6001\u53d8\u91cf\u7684\u503c\u4e0d\u662f\u901a\u8fc7\u5c06\u53c2\u6570\u503c\u5199\u6210setNumber(number + 1)\u8fd9\u6837\u7684\u8bbe\u7f6e\u51fd\u6570\u6765\u66ff\u6362\uff0c\u800c\u662f\u4f5c\u4e3a\u8ba1\u7b97\u4e0b\u4e00\u4e2a\u72b6\u6001\u7684\u56de\u8c03\u51fd\u6570\u4f20\u9012\uff08\u53c2\u89c1\u201c\u51fd\u6570\u5f0f\u66f4\u65b0\u201d\uff09\u3002\u4f8b\u5982\uff0c\u4f7f\u7528setNumber((n) =&gt; n + 1)\uff0c\u4e0b\u4e00\u4e2a\u503c\u5c06\u6839\u636e\u961f\u5217\u4e2d\u524d\u4e00\u4e2a\u72b6\u6001\u8fdb\u884c\u8ba1\u7b97\u3002React\u89c4\u5b9a\u6211\u4eec\u5e94\u8be5\u5982\u4f55\u5904\u7406\u72b6\u6001\u503c\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u4f20\u9012\u4fee\u6539\u540e\u7684\u503c\u3002\u8bf7\u5728\u4e0b\u9762\u7684Sample002\u4e2d\u786e\u8ba4\u4e24\u8005\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span>\r\n\t<span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">n<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">n<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">n<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t<span class=\"p\">}<\/span><span class=\"si\">}<\/span>\r\n<span class=\"p\">&gt;<\/span>\r\n\t+3\r\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n<\/code><\/pre>\n<h4>\u6837\u4f8b002 \u25a0React + TypeScript\uff1a\u6392\u961f\u4e00\u7cfb\u5217\u7684\u72b6\u6001\u66f4\u65b002<\/h4>\n<p>&nbsp;<\/p>\n<p>\u5c06\u4f20\u9012\u7ed9\u8bbe\u7f6e\u51fd\u6570(setNumber())\u7684\u53c2\u6570\u7684\u56de\u8c03\u79f0\u4e3a\u201c\u66f4\u65b0\u51fd\u6570\u201d\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>React\u5c06\u66f4\u65b0\u51fd\u6570\u653e\u5165\u961f\u5217\u4e2d\uff0c\u5728\u4e8b\u4ef6\u5904\u7406\u4ee3\u7801\u5168\u90e8\u6267\u884c\u5b8c\u6bd5\u540e\u8c03\u7528\u5b83\u6765\u5904\u7406\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u5728\u4e0b\u4e00\u6b21\u6e32\u67d3\u65f6\uff0cReact\u4f1a\u5904\u7406\u961f\u5217\uff0c\u5e76\u8fd4\u56de\u6700\u7ec8\u66f4\u65b0\u540e\u7684\u72b6\u6001\u3002<\/ol>\n<p>\u5728\u4e0b\u4e00\u6b21\u6e32\u67d3\u65f6\u8c03\u7528\u7684useState\uff0cReact\u6309\u987a\u5e8f\u904d\u5386\u961f\u5217\u3002\u4e0a\u4e00\u6b21\u7684\u72b6\u6001\u53d8\u91cfnumber\u7684\u503c\u4e3a0\u3002React\u5c06\u8be5\u503c\u4f5c\u4e3a\u53c2\u6570n\u4f20\u9012\u7ed9\u521d\u59cb\u66f4\u65b0\u51fd\u6570\u3002\u7136\u540e\uff0cReact\u5c06\u66f4\u65b0\u540e\u7684\u8fd4\u56de\u503c\u4f5c\u4e3a\u53c2\u6570n\u4f20\u9012\u7ed9\u4e0b\u4e00\u4e2a\u66f4\u65b0\u51fd\u6570\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5c06\u4f9d\u6b21\u91cd\u590d\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30ad\u30e5\u30fc\u306b\u5165\u3063\u305f\u66f4\u65b0n\u623b\u308a\u5024<code>(n) =&gt; n + 1<\/code><code>0<\/code><code>0 + 1 = 1<\/code><code>(n) =&gt; n + 1<\/code><code>1<\/code><code>1 + 1 = 2<\/code><code>(n) =&gt; n + 1<\/code><code>2<\/code><code>2 + 1 = 3<\/code><\/div>\n<\/div>\n<p>\u5728\u524d\u9762\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cReact\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u5c063\u4fdd\u6301\u4e3a\u6700\u7ec8\u503c\uff0c\u5e76\u4eceuseState\u4e2d\u8fd4\u56de\u3002\u56e0\u6b64\uff0c\u5f53\u5355\u51fb[+3]\u6309\u94ae\u65f6\uff0c\u72b6\u6001\u53d8\u91cf\u503c\u589e\u52a0\u4e863\u3002<\/p>\n<h1>\u5728\u66f4\u65b0\u72b6\u6001\u53d8\u91cf\u503c\u4e4b\u540e\u8fdb\u884c\u66f4\u65b0\u7684\u60c5\u51b5\u4e0b\u3002<\/h1>\n<p>\u8bf7\u95ee\u5728\u4fee\u6539\u72b6\u6001\u53d8\u91cf\u503c\u4e4b\u540e\uff0c\u5982\u679c\u5728\u66f4\u65b0\u51fd\u6570\u4e2d\u5bf9\u8be5\u503c\u8fdb\u884c\u5904\u7406\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\u60c5\u51b5\u5462\uff1f\u8bf7\u901a\u8fc7\u4ee5\u4e0b\u7684\u6837\u4f8b003\u8fdb\u884c\u786e\u8ba4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span>\r\n\t<span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"nx\">number<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">5<\/span><span class=\"p\">);<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">n<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t<span class=\"p\">}<\/span><span class=\"si\">}<\/span>\r\n<span class=\"p\">&gt;<\/span>\r\n\t\tIncrease the number\r\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n<\/code><\/pre>\n<h4>\u6837\u672c003\u25a0React + TypeScript: \u961f\u5217\u4e00\u7cfb\u5217\u7684\u72b6\u6001\u66f4\u65b003<\/h4>\n<p>&nbsp;<\/p>\n<p>\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u5728React\u4e2d\u88ab\u544a\u77e5\u5982\u4e0b\u3002<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>setNumber(number + 5): \u4e0a\u4e00\u6b21\u7684\u72c0\u614b\u8b8a\u6578number\u7684\u503c\u70ba0\u3002React\u5c07\u300c\u6539\u5beb\u300d\u6210 0 + 5 = 5\uff0c\u4e26\u5c07\u5176\u653e\u5165\u4f47\u5217\u4e2d\u3002<\/ol>\n<\/li>\n<\/ol>\n<p>setNumber((n) =&gt; n + 1): (n) =&gt; n + 1 \u662f\u66f4\u65b0\u51fd\u6578\u3002React\u5c07\u6b64\u300c\u66f4\u65b0\u51fd\u6578\u300d\u653e\u5165\u4f47\u5217\u4e2d\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30ad\u30e5\u30fc\u306b\u5165\u3063\u305f\u66f4\u65b0n\u623b\u308a\u5024\u300c<code>5<\/code>\u3078\u306e\u66f8\u304d\u66ff\u3048\u300d<code>0<\/code>(\u4f7f\u7528\u305b\u305a)<code>5<\/code><code>(n) =&gt; n + 1<\/code><code>5<\/code><code>5 + 1 = 6<\/code><\/div>\n<\/div>\n<p>\u5728\u4e0b\u4e00\u6b21\u6e32\u67d3\u4e2d\uff0cReact\u5c06\u6309\u987a\u5e8f\u5904\u7406\u961f\u5217\u3002\u7136\u540e\uff0c\u5c066\u4f5c\u4e3a\u6700\u7ec8\u503c\u4fdd\u5b58\u5e76\u4eceuseState\u8fd4\u56de\u3002\u53ef\u4ee5\u5c06\u503c\u7684\u91cd\u65b0\u8d4b\u503c\u89c6\u4e3a\u4f20\u9012\u66f4\u65b0\u51fd\u6570((n)=&gt;x)\uff0c\u5176\u4e2dn\u53c2\u6570\u672a\u4f7f\u7528\u3002<\/p>\n<h1>\u5728\u66f4\u65b0\u72b6\u6001\u53d8\u91cf\u503c\u540e\u8fdb\u884c\u4e86\u91cd\u5199\u7684\u60c5\u51b5\u4e0b<\/h1>\n<p>\u66f4\u65b0\u51fd\u6570\u5904\u7406\u5b8c\u72b6\u6001\u53d8\u91cf\u503c\u4e4b\u540e\uff0c\u5982\u679c\u8fdb\u4e00\u6b65\u66f4\u6539\u4e86\u503c\uff0c\u4f1a\u600e\u4e48\u6837\u5462\uff1fsetNumber()\u51fd\u6570\u7684\u524d\u4e24\u4e2a\u8c03\u7528\u4e0e\u524d\u8ff0\u4ee3\u7801\u793a\u4f8b\u76f8\u540c\u3002\u7136\u540e\uff0c\u6211\u4eec\u6dfb\u52a0\u4e86setNumber(42)\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"p\">&lt;<\/span><span class=\"nt\">button<\/span>\r\n\t<span class=\"na\">onClick<\/span><span class=\"p\">=<\/span><span class=\"si\">{<\/span><span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"nx\">number<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">5<\/span><span class=\"p\">);<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">((<\/span><span class=\"nx\">n<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">n<\/span> <span class=\"o\">+<\/span> <span class=\"mi\">1<\/span><span class=\"p\">);<\/span>\r\n\t\t<span class=\"nf\">setNumber<\/span><span class=\"p\">(<\/span><span class=\"mi\">42<\/span><span class=\"p\">);<\/span>\r\n\t<span class=\"p\">}<\/span><span class=\"si\">}<\/span>\r\n<span class=\"p\">&gt;<\/span>\r\n\t\tIncrease the number\r\n<span class=\"p\">&lt;\/<\/span><span class=\"nt\">button<\/span><span class=\"p\">&gt;<\/span>\r\n<\/code><\/pre>\n<h4>\u6837\u54c1004\u25a0React + TypeScript\uff1a\u6392\u961f\u4e00\u7cfb\u5217\u72b6\u6001\u66f4\u65b004<\/h4>\n<p>&nbsp;<\/p>\n<p>\u7b2c\u4e09\u4e2a\u8bbe\u7f6e\u51fd\u6570\u7684\u8c03\u7528\u4f1a\u5c06\u72b6\u6001\u53d8\u91cf\u7684\u503c\u6539\u4e3a42\u3002React\u4f1a\u5c0642\u4f5c\u4e3a\u6700\u7ec8\u503c\u4fdd\u7559\uff0c\u5e76\u4eceuseState\u8fd4\u56de\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5c06\u7b2c\u4e09\u4e2a\u8bbe\u7f6e\u51fd\u6570\u8bbe\u7f6e\u4e3asetNumber(number + 42)\u4e5f\u4e0d\u4f1a\u6539\u53d8\u7ed3\u679c\u3002\u8fd9\u662f\u56e0\u4e3a\u72b6\u6001\u53d8\u91cfnumber\u7684\u503c\u88ab\u56fa\u5b9a\u4e3a\u4e0a\u4e00\u6b21\u76840\u3002\u4f20\u9012\u7ed9\u7b2c\u4e8c\u4e2a\u8bbe\u7f6e\u51fd\u6570\u7684\u66f4\u65b0\u51fd\u6570\u7684\u8fd4\u56de\u503c6\u4e0d\u4f1a\u88ab\u4f7f\u7528\u3002<\/p>\n<div>\n<div class=\"post-table\">\u30ad\u30e5\u30fc\u306b\u5165\u3063\u305f\u66f4\u65b0n\u623b\u308a\u5024\u300c<code>5<\/code>\u3078\u306e\u66f8\u304d\u66ff\u3048\u300d<code>0<\/code>(\u4f7f\u7528\u305b\u305a)<code>5<\/code><code>(n) =&gt; n + 1<\/code><code>5<\/code><code>5 + 1 = 6<\/code>\u300c<code>42<\/code>\u3078\u306e\u66f8\u304d\u66ff\u3048\u300d<code>6<\/code>(\u4f7f\u7528\u305b\u305a)<code>42<\/code><\/div>\n<\/div>\n<p>\u8ba9\u6211\u4eec\u603b\u7ed3\u4e00\u4e0b\u5f53\u5c06\u66f4\u65b0\u51fd\u6570\u548c\u66ff\u6362\u503c\u5206\u522b\u4f20\u9012\u7ed9setNumber()\u51fd\u6570\u65f6\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u66f4\u65b0\u95a2\u6570(\u4f8b: (n) =&gt; n + 1): \u30ad\u30e5\u30fc\u306b\u306f\u66f4\u65b0\u95a2\u6570\u304c\u52a0\u3048\u3089\u308c\u3066\u5024\u3092\u51e6\u7406\u3059\u308b\u3002<\/p>\n<p>\u5024\u306e\u66f8\u304d\u66ff\u3048(\u4f8b: number = 5): \u30ad\u30e5\u30fc\u306b\u300c5\u3078\u306e\u66f8\u304d\u66ff\u3048\u300d\u304c\u52a0\u3048\u3089\u308c\u3001\u305d\u308c\u307e\u3067\u306e\u30ad\u30e5\u30fc\u3067\u51e6\u7406\u3057\u305f\u5024\u306f\u4e0a\u66f8\u304d\u3055\u308c\u308b\u3002<\/p>\n<p>\u5f53\u4e8b\u4ef6\u5904\u7406\u4ee3\u7801\u6267\u884c\u5b8c\u6bd5\u540e\uff0cReact\u4f1a\u5f00\u59cb\u91cd\u65b0\u6e32\u67d3\u3002\u5728\u91cd\u65b0\u6e32\u67d3\u65f6\uff0cReact\u4f1a\u5904\u7406\u961f\u5217\u64cd\u4f5c\u3002\u66f4\u65b0\u51fd\u6570\u4f1a\u5728\u6e32\u67d3\u671f\u95f4\u6267\u884c\uff0c\u6240\u4ee5\u5b83\u5fc5\u987b\u662f\u4e00\u4e2a\u7eaf\u51fd\u6570\uff0c\u53ea\u8fd4\u56de\u7ed3\u679c\uff0c\u4e0d\u80fd\u5728\u5176\u4e2d\u8bbe\u7f6e\u72b6\u6001\u6216\u6267\u884c\u5176\u4ed6\u526f\u4f5c\u7528\u3002<\/p>\n<p>\u5728\u5f00\u53d1\u65f6\u542f\u7528StrictMode\u7684\u60c5\u51b5\u4e0b\uff0cReact\u4f1a\u5bf9\u6bcf\u4e2a\u66f4\u65b0\u51fd\u6570\u8fdb\u884c\u4e24\u6b21\u8c03\u7528\uff08\u4f46\u7b2c\u4e8c\u6b21\u7684\u7ed3\u679c\u4f1a\u88ab\u4e22\u5f03\uff09\uff0c\u8fd9\u662f\u4e3a\u4e86\u66f4\u5bb9\u6613\u53d1\u73b0\u4ee3\u7801\u95ee\u9898\uff08\u53c2\u89c1&#8221;React + TypeScript: React 18\u4e2d\u7ec4\u4ef6\u6302\u8f7d\u65f6useEffect\u88ab\u8c03\u7528\u4e24\u6b21&#8221;\uff09\u3002<\/p>\n<h1>\u53d6\u540d\u89c4\u5219<\/h1>\n<p>\u4e00\u822c\u800c\u8a00\uff0c\u66f4\u65b0\u51fd\u6570\u7684\u53c2\u6570\u540d\u79f0\u5e38\u5e38\u4f7f\u7528\u72b6\u6001\u53d8\u91cf\u7684\u9996\u5b57\u6bcd\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nf\">setEnabled<\/span><span class=\"p\">((<\/span><span class=\"nx\">e<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"o\">!<\/span><span class=\"nx\">e<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nf\">setLastName<\/span><span class=\"p\">((<\/span><span class=\"nx\">ln<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">ln<\/span><span class=\"p\">.<\/span><span class=\"nf\">reverse<\/span><span class=\"p\">());<\/span>\r\n<span class=\"nf\">setFriendCount<\/span><span class=\"p\">((<\/span><span class=\"nx\">fc<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"nx\">fc<\/span> <span class=\"o\">*<\/span> <span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u4f60\u60f3\u8981\u66f4\u8be6\u7ec6\u5730\u7f16\u5199\u4ee3\u7801\u65f6\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u72b6\u6001\u53d8\u91cf\u540d\u79f0\uff0c\u4f8b\u5982setEnabled((enabled) =&gt; !enabled)\uff0c\u4e5f\u53ef\u80fd\u4f1a\u52a0\u4e0a\u524d\u7f00\uff0c\u4f8b\u5982setEnabled((prevEnabled) =&gt; !prevEnabled)\u3002<\/p>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u89e3\u91ca\u4e86\u4ee5\u4e0b\u9879\u76ee\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u72b6\u614b\u3092\u8a2d\u5b9a\u3057\u3066\u3082\u3001\u65e2\u5b58\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306e\u5909\u6570\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002\u65b0\u305f\u306a\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">React\u306f\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u306e\u5b9f\u884c\u304c\u7d42\u308f\u3063\u305f\u3042\u3068\u3001\u72b6\u614b\u306e\u66f4\u65b0\u3092\u51e6\u7406\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u30d0\u30c3\u30c1\u51e6\u7406\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">1\u56de\u306e\u30a4\u30d9\u30f3\u30c8\u3067\u72b6\u614b\u3092\u8907\u6570\u56de\u66f4\u65b0\u3059\u308b\u306b\u306f\u3001setNumber((n) =&gt; n + 1)\u3068\u3044\u3063\u305f\u66f4\u65b0\u95a2\u6570\u3092\u7528\u3044\u307e\u3059\u3002<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>React\u5b98\u65b9\u7f51\u7ad9\u7684\u6587\u6863\u5df2\u4e8e2023\u5e743\u670816\u65e5\u8fdb\u884c\u4e86\u4fee\u8ba2\uff08\u8bf7\u53c2\u8003\u300cIntroducing react.dev [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38077","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\/ -->\n<title>React + TypeScript: \u5728\u961f\u5217\u4e2d\u6dfb\u52a0\u5e76\u5904\u7406\u8fde\u7eed\u7684\u72b6\u6001\u53d8\u5316 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, 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