{"id":38000,"date":"2023-08-26T10:54:18","date_gmt":"2023-02-27T23:46:44","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8react%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%bd%bf%e7%94%a8%e6%b3%9b%e5%9e%8b%e7%9a%84%e7%bb%84%e4%bb%b6%e3%80%82\/"},"modified":"2024-04-30T20:10:36","modified_gmt":"2024-04-30T12:10:36","slug":"%e4%bd%bf%e7%94%a8react%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%bd%bf%e7%94%a8%e6%b3%9b%e5%9e%8b%e7%9a%84%e7%bb%84%e4%bb%b6%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8react%e6%9d%a5%e5%88%9b%e5%bb%ba%e4%bd%bf%e7%94%a8%e6%b3%9b%e5%9e%8b%e7%9a%84%e7%bb%84%e4%bb%b6%e3%80%82\/","title":{"rendered":"\u4f7f\u7528React\u6765\u521b\u5efa\u4f7f\u7528\u6cdb\u578b\u7684\u7ec4\u4ef6"},"content":{"rendered":"<p>\u6211\u5c06\u603b\u7ed3\u5229\u7528\u6cdb\u578b\u6765\u521b\u5efa\u7ec4\u4ef6\u7684\u65b9\u6cd5\u3002\u5f53\u7136\uff0c\u6211\u5c06\u4ee5\u529f\u80fd\u7ec4\u4ef6\u4e3a\u524d\u63d0\u3002<\/p>\n<h1>\u4f7f\u7528React\u7ec4\u4ef6\u7684\u8303\u578b<\/h1>\n<p>\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u7ed9\u51fa\u4e00\u4e2a\u6700\u7b80\u5355\u7684\u4f8b\u5b50\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">type<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"na\">data<\/span><span class=\"p\">:<\/span> <span class=\"nx\">T<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"p\">,<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">({<\/span> <span class=\"nx\">data<\/span> <span class=\"p\">}:<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/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\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"s2\">`\u3053\u308c\u306f<\/span><span class=\"p\">${<\/span><span class=\"k\">typeof<\/span><span class=\"p\">(<\/span><span class=\"nx\">data<\/span><span class=\"p\">)}<\/span><span class=\"s2\">\u578b\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002`<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5173\u952e\u662f\u5728\u51fd\u6570\u7684\u7c7b\u578b\u6cdb\u578b\u4e2d\u4f7f\u7528&lt;T,&gt;\u3002\u5728TypeScript\u4e2d\uff0c\u51fd\u6570\u7684\u7c7b\u578b\u6cdb\u578b\u901a\u5e38\u5199\u4f5c() =&gt; {}\u3002\u4f46\u662f\u5728React\u4ee3\u7801\u4e2d\uff0c\u4f1a\u88ab\u89c6\u4e3a\u6807\u7b7e\uff0c\u6240\u4ee5\u4e3a\u4e86\u533a\u522b\u5f00\u5b83\uff0c\u6211\u4eec\u9700\u8981\u5199\u6210&lt;T,&gt;\u3002<\/p>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u544a\u8bc9\u7f16\u8bd1\u5668\u4e0d\u662f\u4f7f\u7528\u6807\u7b7e\u800c\u662f\u4f7f\u7528\u6cdb\u578b\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528extends\u5173\u952e\u5b57\u3002\u5982\u679c\u4f60\u60f3\u8981\u5bf9T\u8bbe\u7f6e\u7c7b\u578b\u9650\u5236\uff0c\u57fa\u672c\u4e0a\u5c31\u4f7f\u7528\u8fd9\u79cd\u5f62\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span> <span class=\"kd\">extends<\/span> <span class=\"p\">{}<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">({<\/span> <span class=\"nx\">data<\/span> <span class=\"p\">}:<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ ...<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u4f7f\u7528\u6b64\u7ec4\u4ef6\u65f6\uff0c\u53ef\u4ee5\u8fd9\u6837\u505a\u3002\u60a8\u8fd8\u53ef\u4ee5\u660e\u786e\u6307\u5b9a\u7c7b\u578b\u53c2\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">WrapperComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">Component<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"c1\">\/\/\u3000\u3053\u308c\u3067\u3082OK\uff08\u578b\u3092\u660e\u793a\u3059\u308b\u5834\u5408\uff09<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrapperComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">Component<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">string<\/span><span class=\"o\">&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span>\r\n<span class=\"p\">)<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u660e\u793a\u3057\u305f\u578b\u3068Props\u304c\u30de\u30c3\u30c1\u3057\u306a\u3044\u5834\u5408\u306f\u30a8\u30e9\u30fc<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrapperComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">Component<\/span><span class=\"o\">&lt;<\/span><span class=\"kr\">number<\/span><span class=\"o\">&gt;<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span> <span class=\"c1\">\/\/ \u3053\u308c\u306f\u30a8\u30e9\u30fc\u3001data\u306fnumber\u578b<\/span>\r\n<span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528\u6cdb\u578b\u7684\u7ec4\u4ef6\u8fdb\u884c\u8bb0\u5fc6\u5316<\/h1>\n<h2>\u4e0d\u597d\u7684\u4f8b\u5b50<\/h2>\n<p>\u6211\u5011\u5c07\u4e0a\u8ff0\u7d44\u4ef6\u9032\u884c\u5099\u5fd8\u9304\u5316\u3002\u7167\u5e38\uff0c\u4f7f\u7528React.memo\u5c0d\u7d44\u4ef6\u9032\u884c\u5305\u88dd\u3002\u9019\u6a23\u770b\u8d77\u4f86\u4e26\u4e0d\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u30a8\u30e9\u30fc\u306f\u767a\u751f\u3057\u306a\u3044\u306e\u3067\u6b63\u3057\u3044\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306b\u898b\u3048\u308b<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nf\">memo<\/span><span class=\"p\">(<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span> <span class=\"kd\">extends<\/span> <span class=\"p\">{}<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">({<\/span> <span class=\"nx\">data<\/span> <span class=\"p\">}:<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"c1\">\/\/ ...<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"nx\">Component<\/span><span class=\"p\">.<\/span><span class=\"nx\">displayName<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Component<\/span><span class=\"dl\">\"<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrappedComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">Component<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span>\r\n<span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u8fd9\u4e2a\u4f8b\u5b50\u5b58\u5728\u4e00\u4e9b\u9677\u9631\u3002\u8ba9\u6211\u4eec\u8003\u8651\u4ee5\u4e0b\u7ec4\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">type<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"na\">data<\/span><span class=\"p\">:<\/span> <span class=\"nx\">T<\/span>\r\n  <span class=\"na\">arg<\/span><span class=\"p\">:<\/span> <span class=\"nx\">T<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span> <span class=\"kd\">extends<\/span> <span class=\"p\">{}<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">({<\/span> <span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">arg<\/span> <span class=\"p\">}:<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/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\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"s2\">`<\/span><span class=\"p\">${<\/span><span class=\"k\">typeof<\/span><span class=\"p\">(<\/span><span class=\"nx\">data<\/span><span class=\"p\">)}<\/span> <span class=\"p\">${<\/span><span class=\"k\">typeof<\/span><span class=\"p\">(<\/span><span class=\"nx\">arg<\/span><span class=\"p\">)}<\/span><span class=\"s2\">`<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">MemorizedComponent<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nf\">memo<\/span><span class=\"p\">(<\/span><span class=\"nx\">Component<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nx\">MemorizedComponent<\/span><span class=\"p\">.<\/span><span class=\"nx\">displayName<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">MemorizedComponent<\/span><span class=\"dl\">\"<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrappedComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"c1\">\/\/ \u578b\u304c\u7570\u306a\u308b\u306e\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u306a\u3044!<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">MemorizedComponent<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"nx\">arg<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"mi\">42<\/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>\u5c3d\u7ba1data\u548carg\u7684\u7c7b\u578b\u4e0d\u540c\uff0c\u4f46\u5e76\u6ca1\u6709\u5f15\u53d1\u9519\u8bef\u3002\u8fd9\u662f\u56e0\u4e3a\u5f53\u88abReact.memo\u5305\u88f9\u65f6\uff0cMemorizedComponent\u81ea\u8eab\u5e76\u6ca1\u6709\u4f7f\u7528\u7c7b\u578b\u6cdb\u578b\u6765\u5904\u7406Props\u3002\u5177\u4f53\u800c\u8a00\uff0cMemorizedComponent\u7684\u7c7b\u578b\u662fReact.MemoExoticComponent\uff0c\u5bf9\u4e8eComponent\u7684Props\u7c7b\u578b\u5e76\u4e0d\u5173\u5fc3\u3002<\/p>\n<div>\u5728\u8fdb\u884c\u8bb0\u5fc6\u5316\u4e4b\u524d\uff0c\u5982\u679c\u5728\u8c03\u7528\u7aef\u4f7f\u7528\u7c7b\u578b\u53c2\u6570\uff0c\u5219\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<br \/>\nconst Component = React.memo(({ data }: Props) =&gt; {<br \/>\n\/\/ &#8230;<br \/>\n})<br \/>\nComponent.displayName = &#8220;Component&#8221;\/\/ &#8220;\u90e8\u5206\u51fa\u73b0\u9519\u8bef<br \/>\n\/\/ \u671f\u671b0\u4e2a\u7c7b\u578b\u53c2\u6570\uff0c\u4f46\u5b9e\u9645\u5f97\u5230\u4e861\u4e2a\u3002<br \/>\nconst WrappedComponent: React.FC = () =&gt; (<br \/>\n&lt;Component data=&#8221;\u6587\u5b57\u5217&#8221; \/&gt;<br \/>\n)<\/p>\n<p>\u8fd9\u4e5f\u662f\u7531\u4e8e\u8be5\u7ec4\u4ef6\u88abReact.memo\u5305\u88f9\u6240\u5f15\u8d77\u7684\u3002React.memo\u4e0d\u671f\u671b\u6cdb\u578b\u4f5c\u4e3a\u53c2\u6570\uff0c\u56e0\u6b64\u4ece TypeScript \u7684\u8bed\u6cd5\u89d2\u5ea6\u6765\u8bf4\uff0c\u8fd9\u662f\u9519\u8bef\u7684\u3002<\/p>\n<\/div>\n<h2>\u6b63\u786e\u7684\u4f8b\u5b50<\/h2>\n<p>\u901a\u8fc7\u5bf9\u8bb0\u5fc6\u5316\u7ec4\u4ef6\u8fdb\u884c\u7c7b\u578b\u65ad\u8a00\uff0c\u53ef\u4ee5\u89e3\u51b3\u9519\u8bef\u3002\u5f53\u7136\uff0c\u5728\u5b9e\u73b0\u65f6\u9700\u8981\u975e\u5e38\u5c0f\u5fc3\u5730\u6ce8\u610f\u7c7b\u578b\u65ad\u8a00\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">type<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"na\">data<\/span><span class=\"p\">:<\/span> <span class=\"nx\">T<\/span>\r\n  <span class=\"na\">arg<\/span><span class=\"p\">:<\/span> <span class=\"nx\">T<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span> <span class=\"kd\">extends<\/span> <span class=\"p\">{}<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">({<\/span> <span class=\"nx\">data<\/span><span class=\"p\">,<\/span> <span class=\"nx\">arg<\/span> <span class=\"p\">}:<\/span> <span class=\"nx\">Props<\/span><span class=\"o\">&lt;<\/span><span class=\"nx\">T<\/span><span class=\"o\">&gt;<\/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\">p<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">{<\/span><span class=\"s2\">`<\/span><span class=\"p\">${<\/span><span class=\"k\">typeof<\/span><span class=\"p\">(<\/span><span class=\"nx\">data<\/span><span class=\"p\">)}<\/span> <span class=\"p\">${<\/span><span class=\"k\">typeof<\/span><span class=\"p\">(<\/span><span class=\"nx\">arg<\/span><span class=\"p\">)}<\/span><span class=\"s2\">`<\/span><span class=\"p\">}<\/span><span class=\"o\">&lt;<\/span><span class=\"sr\">\/p<\/span><span class=\"err\">&gt;\r\n<\/span>  <span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"c1\">\/\/ Component\u3068\u3057\u3066\u578b\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3\u3092\u3059\u308b<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">MemorizedComponent<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nf\">memo<\/span><span class=\"p\">(<\/span><span class=\"nx\">Component<\/span><span class=\"p\">)<\/span> <span class=\"k\">as<\/span> <span class=\"k\">typeof<\/span> <span class=\"nx\">Component<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30a8\u30e9\u30fc\u304c\u51fa\u308b\u4f8b<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrappedComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"c1\">\/\/ \u4eca\u5ea6\u306f\u3061\u3083\u3093\u3068\u30a8\u30e9\u30fc\u304c\u51fa\u308b\uff01<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">MemorizedComponent<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"nx\">arg<\/span><span class=\"o\">=<\/span><span class=\"p\">{<\/span><span class=\"mi\">42<\/span><span class=\"p\">}<\/span> <span class=\"sr\">\/<\/span><span class=\"err\">&gt;\r\n<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u6b63\u3057\u3044\u4f8b<\/span>\r\n<span class=\"kd\">const<\/span> <span class=\"nx\">WrappedComponent<\/span><span class=\"p\">:<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nx\">FC<\/span> <span class=\"o\">=<\/span> <span class=\"p\">()<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">(<\/span>\r\n  <span class=\"o\">&lt;<\/span><span class=\"nx\">MemorizedComponent<\/span> <span class=\"nx\">data<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u6587\u5b57\u5217<\/span><span class=\"dl\">\"<\/span> <span class=\"nx\">arg<\/span><span class=\"o\">=<\/span><span class=\"dl\">\"<\/span><span class=\"s2\">\u3082\u3058\u308c\u3064<\/span><span class=\"dl\">\"<\/span> <span class=\"o\">\/&gt;<\/span>\r\n<span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4f1a\u5c06\u7c7b\u578b\u65ad\u8a00\u4f5c\u4e3a\u7ec4\u4ef6\u7684\u4e00\u90e8\u5206\u6765\u4f7f\u7528\uff0c\u56e0\u6b64MemorizedComponent\u7684\u7c7b\u578b\u5c06\u4f1a\u662f({ data, arg }: Props) =&gt; React.JSX.Element\u3002\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba9\u6cdb\u578b\u7c7b\u578b\u5728\u8fdb\u884c\u8bb0\u5fc6\u5316\u4e4b\u524d\u540e\u4f9d\u7136\u6709\u6548\u3002<\/p>\n<h3>\u7ed9\u5b83\u4e00\u4e2adisplayName<\/h3>\n<p>\u5728\u4e0a\u8ff0\u4f8b\u5b50\u4e2d\uff0c\u65e0\u6cd5\u7ed9MemorizedComponent\u6dfb\u52a0displayName\u5c5e\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ Property 'displayName' does not exist<\/span>\r\n<span class=\"nx\">MemorizedComponent<\/span><span class=\"p\">.<\/span><span class=\"nx\">displayName<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">MemorizedComponent<\/span><span class=\"dl\">\"<\/span>\r\n<\/code><\/pre>\n<p>\u7531\u4e8eComponent\u4f5c\u4e3a\u7c7b\u578b\u65ad\u8a00\uff0c\u56e0\u6b64\u57fa\u672c\u4e0a\u91c7\u7528\u4e0a\u8ff0\u65b9\u6cd5\u4e0d\u4f1a\u5f15\u8d77ESLint\u7684\u8b66\u544a\u3002\u4f46\u5982\u679c\u5e0c\u671b\u6dfb\u52a0displayName\uff0c\u5219\u53ef\u4ee5\u6309\u4ee5\u4e0b\u65b9\u5f0f\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">const<\/span> <span class=\"nx\">MemorizedComponent<\/span> <span class=\"o\">=<\/span> <span class=\"nx\">React<\/span><span class=\"p\">.<\/span><span class=\"nf\">memo<\/span><span class=\"p\">(<\/span><span class=\"nx\">Component<\/span><span class=\"p\">)<\/span> <span class=\"k\">as<\/span> <span class=\"k\">typeof<\/span> <span class=\"nx\">Component<\/span> <span class=\"o\">&amp;<\/span> <span class=\"p\">{<\/span> <span class=\"na\">displayName<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"p\">}<\/span>\r\n<span class=\"nx\">MemorizedComponent<\/span><span class=\"p\">.<\/span><span class=\"nx\">displayName<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">MemorizedComponent<\/span><span class=\"dl\">\"<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5c06\u603b\u7ed3\u5229\u7528\u6cdb\u578b\u6765\u521b\u5efa\u7ec4\u4ef6\u7684\u65b9\u6cd5\u3002\u5f53\u7136\uff0c\u6211\u5c06\u4ee5\u529f\u80fd\u7ec4\u4ef6\u4e3a\u524d\u63d0\u3002 \u4f7f\u7528React\u7ec4\u4ef6\u7684\u8303\u578b \u9996\u5148\uff0c\u8ba9\u6211\u4eec\u7ed9\u51fa\u4e00\u4e2a [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-38000","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>\u4f7f\u7528React\u6765\u521b\u5efa\u4f7f\u7528\u6cdb\u578b\u7684\u7ec4\u4ef6 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528react\u6765\u521b\u5efa\u4f7f\u7528\u6cdb\u578b\u7684\u7ec4\u4ef6\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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