{"id":38195,"date":"2023-01-03T03:31:18","date_gmt":"2024-03-11T10:51:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8react%e4%b8%ad%ef%bc%8c%e6%84%8f%e8%af%86%e5%88%b0props-drilling%e9%97%ae%e9%a2%98%e7%9a%84%e7%bb%84%e4%bb%b6%e8%ae%be%e8%ae%a1\/"},"modified":"2024-04-29T08:16:46","modified_gmt":"2024-04-29T00:16:46","slug":"%e5%9c%a8react%e4%b8%ad%ef%bc%8c%e6%84%8f%e8%af%86%e5%88%b0props-drilling%e9%97%ae%e9%a2%98%e7%9a%84%e7%bb%84%e4%bb%b6%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8react%e4%b8%ad%ef%bc%8c%e6%84%8f%e8%af%86%e5%88%b0props-drilling%e9%97%ae%e9%a2%98%e7%9a%84%e7%bb%84%e4%bb%b6%e8%ae%be%e8%ae%a1\/","title":{"rendered":"\u5728React\u4e2d\uff0c\u610f\u8bc6\u5230Props Drilling\u95ee\u9898\u7684\u7ec4\u4ef6\u8bbe\u8ba1"},"content":{"rendered":"

\u9996\u5148<\/h2>\n

\u4f60\u597d\uff0c\u6211\u662f\u5927\u5009\uff0c\u5f9e\u4e8b\u524d\u7aef\u5de5\u7a0b\u5e2b\u7684\u5de5\u4f5c\u3002<\/p>\n

\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5c06\u91cd\u70b9\u4ecb\u7ecd\u6211\u4e2a\u4eba\u611f\u5174\u8da3\u7684React\u7684Props Drilling\u95ee\u9898\uff0c\u5e76\u4ecb\u7ecd\u4e86\u5b66\u4e60\u5982\u4f55\u901a\u8fc7\u9ad8\u6548\u7684\u7ec4\u4ef6\u8bbe\u8ba1\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n

\u672c\u6587\u662fHRBrain Advent Calendar 2023\u7684\u7b2c6\u5929\u7684\u6587\u7ae0\u3002<\/p>\n

 <\/p>\n

\u4ec0\u4e48\u662f”Prop Drilling”\u95ee\u9898\uff1f<\/h2>\n

\u5c5e\u6027\u94bb\u53d6\uff08Prop Drilling\uff09\u662f\u5728React\u7ec4\u4ef6\u7ed3\u6784\u4e2d\uff0c\u901a\u8fc7\u5c42\u5c42\u4f20\u9012\u6570\u636e\uff08Props\uff09\u4ece\u7236\u7ec4\u4ef6\u4f20\u9012\u5230\u5b50\u5b59\u7ec4\u4ef6\u7684\u8fc7\u7a0b\u3002<\/p>\n

React\u5e94\u7528\u7a0b\u5e8f\u7531\u8bb8\u591a\u7ec4\u4ef6\u7ec4\u6210\uff0c\u8fd9\u4e9b\u7ec4\u4ef6\u5f62\u6210\u4e86\u7c7b\u4f3c\u6811\u5f62\u7684\u5c42\u6b21\u7ed3\u6784\u3002React\u6709\u4e00\u4e2a\u57fa\u672c\u539f\u5219\uff0c\u5373\u4e3a\u4e86\u7b80\u5316\u5e94\u7528\u7a0b\u5e8f\u7684\u72b6\u6001\u7ba1\u7406\u5e76\u5bb9\u6613\u8ffd\u8e2a\u6570\u636e\u6d41\uff0c”\u6570\u636e\u603b\u662f\u4ece\u7236\u7ec4\u4ef6\u6d41\u5411\u5b50\u7ec4\u4ef6”\u3002\u56e0\u6b64\uff0c\u5728\u5177\u6709\u591a\u4e2a\u5c42\u6b21\u7684\u7ec4\u4ef6\u6811\u4e2d\uff0c\u57fa\u672c\u4e0a\u4e0d\u80fd\u76f4\u63a5\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u4e0b\u7ea7\u7ec4\u4ef6\uff08\u8df3\u8fc7\u4e2d\u95f4\u7ec4\u4ef6\uff09\u3002<\/p>\n

Prop Drilling\u7684\u95ee\u9898\u662f\uff0c\u6bcf\u4e2a\u4e2d\u95f4\u7ec4\u4ef6\u90fd\u9700\u8981\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u4e0b\u5c42\u7ec4\u4ef6\uff0c\u5373\u4f7f\u5b83\u4eec\u5e76\u4e0d\u76f4\u63a5\u4f7f\u7528\u8be5\u6570\u636e\u3002
\n\u5728\u5177\u6709\u591a\u5c42\u6b21\u7684\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u8fd9\u53ef\u80fd\u4f1a\u53d8\u5f97\u975e\u5e38\u6df7\u4e71\u3002\u5c3d\u7ba1\u4e2d\u95f4\u7ec4\u4ef6\u5b9e\u9645\u4e0a\u5e76\u4e0d\u9700\u8981\u8fd9\u4e9b\u6570\u636e\uff08Props\uff09\uff0c\u4f46\u5b83\u4eec\u9700\u8981\u626e\u6f14\u4f20\u9012\u6570\u636e\u7684\u89d2\u8272\uff0c\u4ece\u800c\u5bfc\u81f4\u4ee3\u7801\u590d\u6742\u5316\u548c\u53ef\u91cd\u7528\u6027\u964d\u4f4e\u3002<\/p>\n

\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u9700\u8981\u4f18\u5316\u7ec4\u4ef6\u95f4\u7684\u6570\u636e\u6d41\u3002\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4e0e\u5178\u578b\u7684Prop Drilling\u65b9\u6cd5\u8fdb\u884c\u6bd4\u8f83\uff0c\u4e86\u89e3\u671d\u7740\u66f4\u9ad8\u6548\u4e14\u6613\u4e8e\u7ef4\u62a4\u7684\u7ec4\u4ef6\u8bbe\u8ba1\u7684\u5177\u4f53\u65b9\u6cd5\u3002<\/p>\n

\u9009\u98791\uff1a\u4e0a\u4e0b\u6587 API<\/h2>\n

\u901a\u8fc7\u4f7f\u7528React\u7684Context API\uff0c\u60a8\u53ef\u4ee5\u5728\u7ec4\u4ef6\u6811\u7684\u7279\u5b9a\u7ea7\u522b\u63d0\u4f9b\u6570\u636e\uff0c\u5e76\u5728\u9700\u8981\u7684\u7ec4\u4ef6\u4e2d\u4f7f\u7528\u6240\u9700\u7684\u6570\u636e\u3002<\/p>\n

\u5178\u578b\u7684\u4f8b\u5b50\u662fProp Drilling\u3002<\/h4>\n
import<\/span> React<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>;<\/span>\r\n\r\ntype<\/span> GrandChildProps<\/span> =<\/span> {<\/span>\r\n  value<\/span>:<\/span> string<\/span>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> GrandChildComponent<\/span> =<\/span> ({<\/span> value<\/span> }:<\/span> GrandChildProps<\/span>)<\/span> =><\/span> (<\/span>\r\n  <<\/span>div<\/span>><\/span>{<\/span>`Value is: <\/span>${<\/span>value<\/span>}<\/span>`<\/span>}<\/span><\/<\/span>div<\/span>><\/span>\r\n);<\/span>\r\n\r\ntype<\/span> ChildProps<\/span> =<\/span> {<\/span>\r\n  value<\/span>:<\/span> string<\/span>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> ChildComponent<\/span> =<\/span> ({<\/span> value<\/span> }:<\/span> ChildProps<\/span>)<\/span> =><\/span> (<\/span>\r\n  <<\/span>GrandChildComponent<\/span> value<\/span>=<\/span>{<\/span>value<\/span>}<\/span> \/><\/span>\r\n);<\/span>\r\n\r\nconst<\/span> App<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  const<\/span> value<\/span> =<\/span> \"<\/span>Hello World<\/span>\"<\/span>;<\/span>\r\n\r\n  return<\/span> <<\/span>ChildComponent<\/span> value<\/span>=<\/span>{<\/span>value<\/span>}<\/span> \/>;<\/span>\r\n};<\/span>\r\n\r\n<\/code><\/pre>\n
ChildComponent\u7684\u4f5c\u7528\u662f\u5c06value\u4f20\u9012\u7ed9GrandChildComponent\u4f5c\u4e3a\u201c\u4e2d\u8f6c\u201d\u3002\u8fd9\u6837\u4e00\u6765\uff0cChildComponent\u5c31\u4f9d\u8d56\u4e8e\u7279\u5b9a\u7684props\uff08value\uff09\uff0c\u5bfc\u81f4\u5176\u91cd\u7528\u6027\u964d\u4f4e\u3002
\n\u800c\u4e14\uff0c\u5982\u679c\u7ec4\u4ef6\u7684\u5d4c\u5957\u66f4\u6df1\uff0c\u5c31\u5fc5\u987b\u7ecf\u8fc7\u66f4\u591a\u7684\u4e2d\u95f4\u7ec4\u4ef6\uff0c\u589e\u52a0\u4e86\u4ee3\u7801\u7684\u590d\u6742\u6027\u3002<\/p>\n
\u4f7f\u7528Context API\u7684\u793a\u4f8b<\/h4>\n
import<\/span> React<\/span>,<\/span> {<\/span> createContext<\/span>,<\/span> useContext<\/span> }<\/span> from<\/span> '<\/span>react<\/span>'<\/span>;<\/span>\r\n\r\ntype<\/span> MyContextType<\/span> =<\/span> {<\/span>\r\n  value<\/span>:<\/span> string<\/span>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> MyContext<\/span> =<\/span> createContext<\/span><<\/span>MyContextType<\/span>><\/span>({<\/span> value<\/span>:<\/span> ''<\/span> });<\/span>\r\n\r\nconst<\/span> App<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  const<\/span> value<\/span> =<\/span> \"<\/span>Hello World<\/span>\"<\/span>;<\/span>\r\n\r\n  return <\/span>(<\/span>\r\n    <<\/span>MyContext<\/span>.<\/span>Provider<\/span> value<\/span>=<\/span>{<\/span>{<\/span> value<\/span> }<\/span>}<\/span>><\/span>\r\n      <<\/span>ChildComponent<\/span> \/><\/span>\r\n    <\/<\/span>MyContext<\/span>.<\/span>Provider<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> GrandChildComponent<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  const<\/span> {<\/span> value<\/span> }<\/span> =<\/span> useContext<\/span>(<\/span>MyContext<\/span>);<\/span>\r\n\r\n  return<\/span> <<\/span>div<\/span>><\/span>{<\/span>`Value is: <\/span>${<\/span>value<\/span>}<\/span>`<\/span>}<\/span><\/<\/span>div<\/span>>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> ChildComponent<\/span> =<\/span> ()<\/span> =><\/span> (<\/span>\r\n  <<\/span>GrandChildComponent<\/span> \/><\/span>\r\n);<\/span>\r\n<\/code><\/pre>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\uff0c\u53ef\u4ee5\u5728\u4e0d\u7ecf\u8fc7ChildComponent\u7684\u60c5\u51b5\u4e0b\u5c06value\u4f20\u9012\u7ed9GrandChildComponent\u3002\u6b64\u5916\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u4e0d\u9700\u8981\u4f9d\u8d56\u7279\u5b9a\u7684Props\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u53ef\u91cd\u7528\u6027\u3002
\n\u6570\u636e\u4eceApp\u6d41\u5411GrandChildComponent\u662f\u901a\u8fc7Context\u8fdb\u884c\u7684\uff0c\u8fd9\u6837\u53ef\u4ee5\u4f7f\u4ee3\u7801\u7ed3\u6784\u66f4\u52a0\u6e05\u6670\u548c\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n
\u516c\u5f0f\u6587\u6863\u7684\u5efa\u8bae\u4e8b\u9879<\/h4>\n
\u5728\u8003\u8651\u4f7f\u7528 Context API \u65f6\u9700\u8981\u6ce8\u610f\u3002\u4f8b\u5982\uff0c\u5982\u679c Context \u7684\u503c\u7ecf\u5e38\u53d8\u5316\uff0c\u8fd9\u4e9b\u53d8\u5316\u4f1a\u4f20\u64ad\u5230\u6574\u4e2a\u7ec4\u4ef6\u6811\u4e2d\uff0c\u53ef\u80fd\u5bf9\u6027\u80fd\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u3002\u6839\u636e React \u7684\u5b98\u65b9\u6587\u6863\uff0c\u5efa\u8bae\u5728\u4f7f\u7528 Context API \u4e4b\u524d\uff0c\u9996\u5148\u8981\u91cd\u65b0\u5ba1\u89c6\u548c\u91cd\u65b0\u8bbe\u8ba1\u7ec4\u4ef6\u7ed3\u6784\u3002<\/p>\n
\u8bf7\u53c2\u8003React\u7684\u5b98\u65b9\u6587\u6863\uff0c\u8be6\u7ec6\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n
 <\/p>\n
\u65b9\u6cd5\u4e8c\uff1a\u7ec4\u4ef6\u5408\u6210<\/h2>\n
\u5728\u9700\u8981\u4e0d\u540c\u5e03\u5c40\u548c\u6837\u5f0f\u7684\u9875\u9762\u548c\u7ec4\u4ef6\u7684\u60c5\u51b5\u4e0b\uff0c\u7ec4\u4ef6\u5408\u6210\u975e\u5e38\u6709\u6548\u3002\u4f8b\u5982\uff0c\u5728\u4e0d\u540c\u7684\u90e8\u5206\u4e2d\u4f7f\u7528\u5171\u540c\u7684\u5e03\u5c40\u7ec4\u4ef6\uff0c\u5e76\u63d2\u5165\u4e0d\u540c\u7684\u5185\u5bb9\uff0c\u901a\u8fc7\u907f\u514d\u4ee3\u7801\u91cd\u590d\uff0c\u53ef\u4ee5\u63d0\u9ad8\u53ef\u91cd\u7528\u6027\u3002<\/p>\n
\u5178\u578b\u7684\u7684Prop Drilling\u4f8b\u5b50<\/h4>\n
import<\/span> React<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>;<\/span>\r\n\r\ntype<\/span> LayoutProps<\/span> =<\/span> {<\/span>\r\n  title<\/span>:<\/span> string<\/span>;<\/span>\r\n  isDarkMode<\/span>:<\/span> boolean<\/span>;<\/span>\r\n  children<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span>;<\/span>\r\n}<\/span>\r\n\r\nconst<\/span> Header<\/span> =<\/span> ({<\/span> title<\/span>,<\/span> isDarkMode<\/span> }:<\/span> {<\/span> title<\/span>:<\/span> string<\/span>;<\/span> isDarkMode<\/span>:<\/span> boolean<\/span> })<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>header<\/span> style<\/span>=<\/span>{<\/span>{<\/span> backgroundColor<\/span>:<\/span> isDarkMode<\/span> ?<\/span> '<\/span>black<\/span>'<\/span> :<\/span> '<\/span>white<\/span>'<\/span> }<\/span>}<\/span>><\/span>\r\n      <<\/span>h1<\/span>><\/span>{<\/span>title<\/span>}<\/span><\/<\/span>h1<\/span>><\/span>\r\n    <\/<\/span>header<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> Footer<\/span> =<\/span> ({<\/span> isDarkMode<\/span> }:<\/span> {<\/span> isDarkMode<\/span>:<\/span> boolean<\/span> })<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>footer<\/span> style<\/span>=<\/span>{<\/span>{<\/span> backgroundColor<\/span>:<\/span> isDarkMode<\/span> ?<\/span> '<\/span>black<\/span>'<\/span> :<\/span> '<\/span>white<\/span>'<\/span> }<\/span>}<\/span>><\/span>\r\n      <<\/span>p<\/span>><\/span>\u00a9 2023 My Website<\/<\/span>p<\/span>><\/span>\r\n    <\/<\/span>footer<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> Layout<\/span> =<\/span> ({<\/span> title<\/span>,<\/span> isDarkMode<\/span>,<\/span> children<\/span> }:<\/span> LayoutProps<\/span>)<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>Header<\/span> title<\/span>=<\/span>{<\/span>title<\/span>}<\/span> isDarkMode<\/span>=<\/span>{<\/span>isDarkMode<\/span>}<\/span> \/><\/span>\r\n      <<\/span>main<\/span>><\/span>{<\/span>children<\/span>}<\/span><\/<\/span>main<\/span>><\/span>\r\n      <<\/span>Footer<\/span> isDarkMode<\/span>=<\/span>{<\/span>isDarkMode<\/span>}<\/span> \/><\/span>\r\n    <\/<\/span>div<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> App<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>Layout<\/span> title<\/span>=<\/span>\"My App\"<\/span> isDarkMode<\/span>=<\/span>{<\/span>true<\/span>}<\/span>><\/span>\r\n      <<\/span>p<\/span>><\/span>Welcome to my app!<\/<\/span>p<\/span>><\/span>\r\n    <\/<\/span>Layout<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\n<\/code><\/pre>\n
\u5e03\u5c40\u7ec4\u4ef6\u5411\u9875\u5934\u548c\u9875\u811a\u5206\u522b\u4f20\u9012\u5c5e\u6027\uff08\u6807\u9898\u3001\u662f\u5426\u4e3a\u6697\u9ed1\u6a21\u5f0f\uff09\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u4f1a\u9047\u5230\u4ee5\u4e0b\u95ee\u9898\u3002<\/p>\n
    \n
  • \n
      Header\u3068Footer\u306fLayout \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u4ed6\u306e\u5834\u6240\u3067\u518d\u5229\u7528\u3059\u308b\u969b\u306b\u4e0d\u4fbf\u3067\u3042\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
      title\u3084isDarkMode\u304c\u5909\u66f4\u3055\u308c\u308b\u305f\u3073\u306b\u3001Layout\u3060\u3051\u3067\u306a\u304fHeader\u3068Footer\u3082\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n
      \u4f7f\u7528\u4e86\u7ec4\u4ef6\u5408\u6210\uff08Composition\uff09\u7684\u793a\u4f8b\u3002<\/h4>\n
      import<\/span> React<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>;<\/span>\r\n\r\ntype<\/span> LayoutProps<\/span> =<\/span> {<\/span>\r\n  header<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span>;<\/span>\r\n  footer<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span>;<\/span>\r\n  children<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span>;<\/span>\r\n}<\/span>\r\n\r\nconst<\/span> Header<\/span> =<\/span> ({<\/span> children<\/span> }:<\/span> {<\/span> children<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span> })<\/span> =><\/span> {<\/span>\r\n  return<\/span> <<\/span>header<\/span>><\/span>{<\/span>children<\/span>}<\/span><\/<\/span>header<\/span>>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> Footer<\/span> =<\/span> ({<\/span> children<\/span> }:<\/span> {<\/span> children<\/span>:<\/span> React<\/span>.<\/span>ReactNode<\/span> })<\/span> =><\/span> {<\/span>\r\n  return<\/span> <<\/span>footer<\/span>><\/span>{<\/span>children<\/span>}<\/span><\/<\/span>footer<\/span>>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> Layout<\/span> =<\/span> ({<\/span> header<\/span>,<\/span> footer<\/span>,<\/span> children<\/span> }:<\/span> LayoutProps<\/span>)<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      {<\/span>header<\/span>}<\/span>\r\n      <<\/span>main<\/span>><\/span>{<\/span>children<\/span>}<\/span><\/<\/span>main<\/span>><\/span>\r\n      {<\/span>footer<\/span>}<\/span>\r\n    <\/<\/span>div<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> App<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  const<\/span> isDarkMode<\/span> =<\/span> true<\/span>;<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>Layout<\/span> \r\n      header<\/span>=<\/span>{<\/span><<\/span>Header<\/span>><<\/span>h1<\/span> style<\/span>=<\/span>{<\/span>{<\/span> backgroundColor<\/span>:<\/span> isDarkMode<\/span> ?<\/span> '<\/span>black<\/span>'<\/span> :<\/span> '<\/span>white<\/span>'<\/span> }<\/span>}<\/span>><\/span>My App<\/<\/span>h1<\/span>><\/<\/span>Header<\/span>><\/span>}<\/span>\r\n      footer<\/span>=<\/span>{<\/span><<\/span>Footer<\/span>><<\/span>p<\/span> style<\/span>=<\/span>{<\/span>{<\/span> backgroundColor<\/span>:<\/span> isDarkMode<\/span> ?<\/span> '<\/span>black<\/span>'<\/span> :<\/span> '<\/span>white<\/span>'<\/span> }<\/span>}<\/span>><\/span>\u00a9 2023 My Website<\/<\/span>p<\/span>><\/<\/span>Footer<\/span>><\/span>}<\/span>\r\n    ><\/span>\r\n      <<\/span>p<\/span>><\/span>Welcome to my app!<\/<\/span>p<\/span>><\/span>\r\n    <\/<\/span>Layout<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
      Layout\u7ec4\u4ef6\u4e0d\u76f4\u63a5\u63a7\u5236\u5b50\u7ec4\u4ef6\uff0c\u800c\u662f\u4e3a\u5b83\u4eec\u63d0\u4f9b\u7ed8\u5236\u7684\u201c\u4f4d\u7f6e\u201d\u3002\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u7ec4\u4ef6\u4e4b\u95f4\u7684\u8026\u5408\uff0c\u5e76\u4f7f\u5176\u6210\u4e3a\u4e00\u4e2a\u901a\u7528\u7684\u5e03\u5c40\u7ec4\u4ef6\u3002<\/p>\n
      Layout\u7ec4\u4ef6\u53ef\u4ee5\u63a5\u6536Header\u548cFooter\u4f5c\u4e3aReactNode\u7684\u5c5e\u6027\uff0c\u4ece\u800c\u5177\u6709\u4ee5\u4e0b\u4f18\u70b9\u3002<\/p>\n
        \n
      • \n
          Header\u3068Footer\u306fLayout\u304b\u3089\u72ec\u7acb\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u4ed6\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u3067\u81ea\u7531\u306b\u518d\u5229\u7528\u3067\u304d\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            Layout\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u3001\u4efb\u610f\u306eHeader\u3084Footer\u3092\u53d7\u3051\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u7570\u306a\u308b\u30b9\u30bf\u30a4\u30eb\u3084\u5185\u5bb9\u3092\u6301\u3064Header\u3084Footer\u3092\u67d4\u8edf\u306b\u53d6\u308a\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/ul>\n
            \u65b9\u6cd5\u4e09\uff1a\u9ad8\u9636\u7ec4\u4ef6\uff08HOC\uff09<\/h2>\n
            \u9ad8\u7ea7\u7ec4\u4ef6\uff08HOC\uff09\u662f\u4e00\u79cd\u51fd\u6570\uff0c\u7528\u4e8e\u4e3a\u7ec4\u4ef6\u6dfb\u52a0\u529f\u80fd\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\uff0c\u800c\u662f\u751f\u6210\u4e00\u4e2a\u5e26\u6709\u6240\u9700\u6570\u636e\u7684\u65b0\u7ec4\u4ef6\u3002
            \n\u7279\u522b\u9002\u7528\u4e8e\u5728\u4e0d\u540c\u7684\u7ec4\u4ef6\u4e4b\u95f4\u91cd\u590d\u4f7f\u7528\u5171\u4eab\u529f\u80fd\u548c\u903b\u8f91\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u4f7f\u7528\u9ad8\u7ea7\u7ec4\u4ef6\uff08HOC\uff09\u5c06\u5171\u4eab\u903b\u8f91\uff0c\u5982\u8ba4\u8bc1\u3001\u6570\u636e\u83b7\u53d6\u3001\u9519\u8bef\u5904\u7406\u7b49\u5c01\u88c5\u8d77\u6765\uff0c\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u529f\u80fd\u5e94\u7528\u4e8e\u591a\u4e2a\u9700\u8981\u5b83\u4eec\u7684\u7ec4\u4ef6\u3002<\/p>\n
            \u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u4ee5\u8ba4\u8bc1\u529f\u80fd\u4e3a\u4f8b\u8fdb\u884c\u8ba8\u8bba\u3002<\/p>\n
            \u5178\u578b\u7684\u4f8b\u7684\u300cProp Drilling\u300d\u3002<\/h4>\n
            import<\/span> React<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>;<\/span>\r\n\r\ntype<\/span> User<\/span> =<\/span> {<\/span>\r\n  name<\/span>:<\/span> string<\/span>;<\/span>\r\n  isAuthenticated<\/span>:<\/span> boolean<\/span>;<\/span>\r\n}<\/span>\r\n\r\nconst<\/span> Profile<\/span> =<\/span> ({<\/span> user<\/span> }:<\/span> {<\/span> user<\/span>:<\/span> User<\/span> })<\/span> =><\/span> {<\/span>\r\n  if <\/span>(<\/span>!<\/span>user<\/span>.<\/span>isAuthenticated<\/span>)<\/span> {<\/span>\r\n    return<\/span> <<\/span>p<\/span>><\/span>Please log in.<\/<\/span>p<\/span>>;<\/span>\r\n  }<\/span>\r\n  return<\/span> <<\/span>div<\/span>><\/span>Welcome, {<\/span>user<\/span>.<\/span>name<\/span>}<\/span>!<\/<\/span>div<\/span>>;<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> Navbar<\/span> =<\/span> ({<\/span> user<\/span> }:<\/span> {<\/span> user<\/span>:<\/span> User<\/span> })<\/span> =><\/span> {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>nav<\/span>><\/span>\r\n      <<\/span>Profile<\/span> user<\/span>=<\/span>{<\/span>user<\/span>}<\/span> \/><\/span>\r\n    <\/<\/span>nav<\/span>><\/span>\r\n  );<\/span>\r\n};<\/span>\r\n\r\nconst<\/span> App<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  const<\/span> user<\/span> =<\/span> {<\/span>\r\n    name<\/span>:<\/span> \"<\/span>John Doe<\/span>\"<\/span>,<\/span>\r\n    isAuthenticated<\/span>:<\/span> true<\/span>\r\n  };<\/span>\r\n\r\n  return<\/span> <<\/span>Navbar<\/span> user<\/span>=<\/span>{<\/span>user<\/span>}<\/span> \/>;<\/span>\r\n};<\/span>\r\n<\/code><\/pre>\n
            \u4f7f\u7528\u9ad8\u9636\u7ec4\u4ef6\uff08HOC\uff09\u7684\u793a\u4f8b<\/h4>\n
            import<\/span> React<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>;<\/span>\r\n\r\ntype<\/span> User<\/span> =<\/span> {<\/span>\r\n  name<\/span>:<\/span> string<\/span>;<\/span>\r\n  isAuthenticated<\/span>:<\/span> boolean<\/span>;<\/span>\r\n}<\/span>\r\n\r\ntype<\/span> WithAuthenticationProps<\/span> =<\/span> {<\/span>\r\n  user<\/span>:<\/span> User<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\/\/ HOC: \u8a8d\u8a3c\u72b6\u614b\u306b\u57fa\u3065\u3044\u3066\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b<\/span>\r\nconst<\/span> withAuthentication<\/span> =<\/span> <<\/span>P<\/span> extends<\/span> object<\/span>><\/span>(\r\n  Component: React.ComponentType<<\/span>P<\/span> &<\/span> WithAuthenticationProps<\/span>><\/span>\r\n) => {<\/span>\r\n  return <\/span>(<\/span>props<\/span>:<\/span> P<\/span>)<\/span> =><\/span> {<\/span>\r\n    const<\/span> user<\/span>:<\/span> User<\/span> =<\/span> {<\/span>\r\n      name<\/span>:<\/span> \"<\/span>John Doe<\/span>\"<\/span>,<\/span>\r\n      isAuthenticated<\/span>:<\/span> true<\/span>,<\/span> \/\/ \u8a8d\u8a3c\u72b6\u614b\u3092\u8a2d\u5b9a<\/span>\r\n    };<\/span>\r\n\r\n    if <\/span>(<\/span>!<\/span>user<\/span>.<\/span>isAuthenticated<\/span>)<\/span> {<\/span>\r\n      return<\/span> <<\/span>p<\/span>><\/span>Please log in.<\/<\/span>p<\/span>>;<\/span>\r\n    }<\/span>\r\n\r\n    return<\/span> <<\/span>Component<\/span> {<\/span>...(<\/span>props<\/span> as<\/span> P<\/span>)<\/span>}<\/span> user<\/span>=<\/span>{<\/span>user<\/span>}<\/span> \/>;<\/span>\r\n  };<\/span>\r\n}<\/span>;\r\n\r\nconst Profile = withAuthentication(({<\/span> user<\/span> }<\/span>: WithAuthenticationProps) => {<\/span>\r\n  return<\/span> <<\/span>div<\/span>><\/span>Welcome, {<\/span>user<\/span>.<\/span>name<\/span>}<\/span>!<\/<\/span>div<\/span>>;<\/span>\r\n}<\/span>);\r\n\r\nconst Navbar = () => {<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>nav<\/span>><\/span>\r\n      <<\/span>Profile<\/span> \/><\/span>\r\n    <\/<\/span>nav<\/span>><\/span>\r\n  );<\/span>\r\n}<\/span>;\r\n\r\nconst App = () => {<\/span>\r\n  return<\/span> <<\/span>Navbar<\/span> \/>;<\/span>\r\n}<\/span>;\r\n\r\n\r\n<\/code><\/pre>\n
            \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cwithAuthentication\u8d1f\u8d23\u7ba1\u7406\u7528\u6237\u4fe1\u606f\uff0c\u5e76\u4e14\u53ea\u5bf9\u7ecf\u8fc7\u8ba4\u8bc1\u7684\u7528\u6237\u6e32\u67d3Profile\u7ec4\u4ef6\u3002\u8fd9\u6837\u4e00\u6765\uff0cApp\u7ec4\u4ef6\u5c31\u4e0d\u9700\u8981\u76f4\u63a5\u5411\u5b50\u7ec4\u4ef6\u4f20\u9012\u7528\u6237\u4fe1\u606f\u4e86\u3002<\/p>\n
            \u7531\u4e8e\u7528\u6237\u4fe1\u606f\u7684\u7ba1\u7406\u548c\u4f20\u9012\u662f\u5728HOC\u5185\u90e8\u8fdb\u884c\u7684\uff0c\u56e0\u6b64\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u53ef\u4ee5\u4ece\u6570\u636e\u7ba1\u7406\u4e2d\u89e3\u653e\u51fa\u6765\u3002<\/p>\n
            \u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u907f\u514d\u91cd\u590d\u7684\u8ba4\u8bc1\u903b\u8f91\uff0c\u5e76\u63d0\u9ad8\u7ec4\u4ef6\u7684\u53ef\u91cd\u7528\u6027\u3002\u6b64\u5916\uff0c\u5c06\u5e94\u7528\u7a0b\u5e8f\u7684\u8ba4\u8bc1\u903b\u8f91\u96c6\u4e2d\u5728\u4e00\u5904\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5176\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/p>\n
            \u6700\u540e<\/h2>\n
            \u5728\u672c\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86\u51e0\u79cd\u89e3\u51b3Props Drilling\u95ee\u9898\u7684\u65b9\u6cd5\uff0c\u5305\u62ecContext API\u3001\u7ec4\u4ef6\u5408\u6210\u548c\u9ad8\u9636\u7ec4\u4ef6\uff08HOC\uff09\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u5404\u81ea\u90fd\u6709\u4f18\u70b9\u548c\u7f3a\u70b9\uff0c\u56e0\u6b64\u5728\u9009\u62e9\u6700\u4f73\u65b9\u6cd5\u65f6\u9700\u8981\u6ce8\u610f\u9879\u76ee\u7279\u5b9a\u7684\u9700\u6c42\u548c\u7ed3\u6784\u4e0d\u540c\u3002<\/p>\n
            \u53e6\u5916\uff0c\u8fc4\u4eca\u4e3a\u6b62\u6211\u4eec\u53ea\u8ba8\u8bba\u4e86Props Drilling\u7684\u95ee\u9898\uff0c\u4f46\u8fd9\u5e76\u4e0d\u610f\u5473\u7740Props Drilling\u672c\u8eab\u5c31\u662f\u4e00\u5b9a\u4e0d\u597d\u7684\u3002\u76f8\u53cd\uff0c\u5728\u5c0f\u89c4\u6a21\u9879\u76ee\u6216\u7b80\u5355\u7ec4\u4ef6\u7ed3\u6784\u4e2d\uff0cProps Drilling\u53ef\u80fd\u662f\u4e00\u79cd\u76f4\u89c2\u4e14\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u56e0\u6b64\uff0c\u6211\u8ba4\u4e3a\u4e0e\u5176\u7a81\u7136\u5f15\u5165Context API\u6216\u5176\u4ed6\u590d\u6742\u7684\u6280\u672f\u624b\u6bb5\uff0c\u8fd8\u4e0d\u5982\u6839\u636e\u9879\u76ee\u7684\u53d1\u5c55\u9010\u6b65\u8fdb\u884c\u91cd\u6784\u66f4\u597d\u3002<\/p>\n
            \u8bf7\u53c2\u8003<\/h2>\n
             <\/p>\n
            \u4ee5\u4e0b\u662f\u5bf9\u539f\u6587\u7684\u4e2d\u6587\u540c\u4e49\u6539\u5199\uff1a<\/h2>\n
            \u516c\u5173<\/p>\n
            \u5728HRBrain\u682a\u5f0f\u4f1a\u793e\u4e2d\uff0c\u6211\u4eec\u6b63\u5728\u62db\u52df\u65b0\u6210\u5458\u3002<\/p>\n
             <\/p>\n","protected":false},"excerpt":{"rendered":"
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