{"id":38310,"date":"2023-05-30T20:46:07","date_gmt":"2023-02-14T19:00:38","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8react%e7%bb%84%e4%bb%b6%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9%e3%80%82\/"},"modified":"2024-04-30T06:40:00","modified_gmt":"2024-04-29T22:40:00","slug":"%e5%9c%a8react%e7%bb%84%e4%bb%b6%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8react%e7%bb%84%e4%bb%b6%e4%b8%ad%e9%9c%80%e8%a6%81%e6%b3%a8%e6%84%8f%e7%9a%84%e4%ba%8b%e9%a1%b9%e3%80%82\/","title":{"rendered":"\u5728React\u7ec4\u4ef6\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879"},"content":{"rendered":"

\u6211\u6b63\u5728\u4f7f\u7528ChatGPT\u5b66\u4e60\u3002<\/p>\n

\u5728React\u7ec4\u4ef6\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u60c5\u662f\u4ec0\u4e48\u3002<\/h2>\n

\u5728\u8bbe\u8ba1\u548c\u5f00\u53d1React\u7ec4\u4ef6\u65f6\uff0c\u6709\u8bb8\u591a\u8981\u6ce8\u610f\u7684\u8981\u70b9\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u8981\u70b9\u3002<\/p>\n

    \n
  1. \n
      \u518d\u5229\u7528\u6027:<\/ol>\n<\/li>\n<\/ol>\n

      \u5efa\u8bae\u4ee5\u53ef\u91cd\u7528\u7684\u7ec4\u4ef6\u4e3a\u5355\u4f4d\u8fdb\u884c\u8bbe\u8ba1\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u4ee3\u7801\u91cd\u590d\uff0c\u4f7f\u7ef4\u62a4\u53d8\u5f97\u5bb9\u6613\u3002<\/p>\n

      \u5355\u4e00\u8d23\u4efb\u539f\u5219\uff08Single Responsibility Principle: SRP\uff09:<\/p>\n

      \u6bcf\u4e2a\u7ec4\u4ef6\u5e94\u8be5\u53ea\u8d1f\u8d23\u4e00\u4e2a\u4efb\u52a1\u6216\u529f\u80fd\u3002\u8fd9\u6837\u53ef\u4ee5\u63d0\u9ad8\u7ec4\u4ef6\u7684\u53ef\u91cd\u7528\u6027\u548c\u53ef\u6d4b\u8bd5\u6027\u3002<\/p>\n

      \u4e0d\u53d8\u6027\uff08Immutability\uff09:<\/p>\n

      \u5728React\u4e2d\uff0c\u63a8\u8350\u4e0d\u76f4\u63a5\u4fee\u6539state\u6216props\uff0c\u800c\u662f\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u6216\u6570\u7ec4\u8fdb\u884c\u66f4\u65b0\u3002\u8fd9\u6837\u53ef\u4ee5\u4f18\u5316\u6027\u80fd\u5e76\u9632\u6b62\u9519\u8bef\u53d1\u751f\u3002<\/p>\n

      \u72b6\u6001\u7ba1\u7406:<\/p>\n

      \u5728\u5927\u578b\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u8003\u8651\u5f15\u5165\u72b6\u6001\u7ba1\u7406\u5e93\uff08\u4f8b\u5982Redux\uff0cMobX\uff09\u6765\u7edf\u4e00\u7ba1\u7406\u6574\u4e2a\u5e94\u7528\u7684\u72b6\u6001\u3002<\/p>\n

      \u751f\u547d\u5468\u671f\u65b9\u6cd5\u7684\u7406\u89e3:<\/p>\n

      \u901a\u8fc7\u7406\u89e3\u7ec4\u4ef6\u7684\u751f\u547d\u5468\u671f\uff0c\u53ef\u4ee5\u9002\u5f53\u5730\u8fdb\u884c\u8d44\u6e90\u83b7\u53d6\u3001\u91ca\u653e\u3001\u7b2c\u4e09\u65b9\u5e93\u96c6\u6210\u7b49\u64cd\u4f5c\u3002<\/p>\n

      \u6027\u80fd:<\/p>\n

      \u5e94\u8003\u8651\u4f7f\u7528shouldComponentUpdate\u6216React.memo\u7b49\u6765\u4f18\u5316\u6027\u80fd\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6e32\u67d3\u3002<\/p>\n

      \u7c7b\u578b\u5b89\u5168\u6027:<\/p>\n

      \u901a\u8fc7\u4f7f\u7528\u9759\u6001\u7c7b\u578b\u68c0\u67e5\u5668\uff08\u5982TypeScript\u6216Flow\uff09\uff0c\u53ef\u4ee5\u786e\u4fdd\u7c7b\u578b\u5b89\u5168\uff0c\u63d0\u524d\u68c0\u6d4b\u9519\u8bef\u3002<\/p>\n

      \u6d4b\u8bd5:<\/p>\n

      \u4e3a\u786e\u4fdd\u7ec4\u4ef6\u7684\u529f\u80fd\u6b63\u5e38\uff0c\u53ef\u4ee5\u8003\u8651\u5f15\u5165\u5355\u5143\u6d4b\u8bd5\u6216\u7aef\u5230\u7aef\u6d4b\u8bd5\u3002<\/p>\n

      \u53ef\u8bbf\u95ee\u6027:<\/p>\n

      \u4e3a\u4e86\u63d0\u4f9b\u5bf9\u6240\u6709\u7528\u6237\u53cb\u597d\u7684UI\u754c\u9762\uff0c\u5e94\u8be5\u8003\u8651\u8bbe\u8ba1\u5177\u5907\u53ef\u8bbf\u95ee\u6027\u7684\u7ec4\u4ef6\u3002<\/p>\n

      \u6837\u5f0f:<\/p>\n

      \u5efa\u8bae\u4f7f\u7528CSS-in-JS\u5e93\u6216CSS Modules\u7b49\u5de5\u5177\uff0c\u4ee5\u786e\u4fdd\u7ec4\u4ef6\u95f4\u6837\u5f0f\u7684\u4f5c\u7528\u57df\u3002<\/p>\n

      \u8fd9\u4e9b\u8981\u70b9\u662fReact\u6700\u4f73\u5b9e\u8df5\u7684\u4e00\u90e8\u5206\u3002\u6839\u636e\u9879\u76ee\u9700\u6c42\u548c\u60c5\u51b5\uff0c\u7075\u6d3b\u5730\u5e94\u7528\u8fd9\u4e9b\u8981\u70b9\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n

      \u5728React\u7ec4\u4ef6\u4e2d\u9700\u8981\u6ce8\u610f\u7684\u4e09\u4ef6\u4e8b<\/h2>\n

      \u5728\u4e00\u822cReact\u5f00\u53d1\u4e2d\uff0c\u8981\u5c06\u4e0a\u8ff0\u8981\u70b9\u7f29\u51cf\u4e3a\u4e09\u4e2a\u662f\u56f0\u96be\u7684\uff0c\u4f46\u5982\u679c\u8981\u9009\u62e9\u6700\u57fa\u672c\u4e14\u6700\u91cd\u8981\u7684\u4e09\u4e2a\u8981\u70b9\uff0c\u53ef\u4ee5\u9009\u62e9\u4ee5\u4e0b\u8981\u70b9\uff1a<\/p>\n

        \n
      1. \n
          \u518d\u5229\u7528\u6027\uff1a<\/ol>\n<\/li>\n<\/ol>\n

          \u6700\u597d\u4ee5\u53ef\u91cd\u590d\u4f7f\u7528\u7684\u7ec4\u4ef6\u4e3a\u5355\u4f4d\u8fdb\u884c\u8bbe\u8ba1\u3002\u901a\u8fc7\u610f\u8bc6\u5230\u53ef\u91cd\u7528\u6027\uff0c\u53ef\u4ee5\u4f7f\u4ee3\u7801\u7684\u7ef4\u62a4\u548c\u6269\u5c55\u66f4\u52a0\u5bb9\u6613\u3002<\/p>\n

          \u4e0d\u53d8\u6027 (Immutability)\uff1a<\/p>\n

          \u4f5c\u4e3aReact\u7684\u4e3b\u8981\u7279\u70b9\uff0c\u5efa\u8bae\u907f\u514d\u76f4\u63a5\u4fee\u6539\u72b6\u6001\uff08state\uff09\u548c\u5c5e\u6027\uff08props\uff09\u3002\u9075\u5b88\u4e0d\u53d8\u6027\u7684\u539f\u5219\u53ef\u4ee5\u4f18\u5316\u6027\u80fd\u5e76\u9632\u6b62\u4ea7\u751f\u9519\u8bef\u3002<\/p>\n

          \u72b6\u6001\u7ba1\u7406\uff1a<\/p>\n

          \u5728\u7ba1\u7406\u5927\u578b\u5e94\u7528\u7a0b\u5e8f\u6216\u591a\u4e2a\u7ec4\u4ef6\u4e4b\u95f4\u7684\u6570\u636e\u6d41\u65f6\uff0c\u6e05\u695a\u5730\u5b9a\u4e49\u72b6\u6001\u7ba1\u7406\u65b9\u6cd5\u975e\u5e38\u91cd\u8981\u3002\u901a\u8fc7\u9002\u5f53\u7684\u72b6\u6001\u7ba1\u7406\uff0c\u5e94\u7528\u7a0b\u5e8f\u7684\u884c\u4e3a\u5c06\u66f4\u6613\u4e8e\u9884\u6d4b\u3002<\/p>\n

          \u8fd9\u4e09\u4e2a\u8981\u70b9\u5728React\u7ec4\u4ef6\u8bbe\u8ba1\u548c\u5f00\u53d1\u4e2d\u975e\u5e38\u91cd\u8981\u3002\u7136\u800c\uff0c\u7406\u89e3\u4e0a\u8ff0\u5341\u4e2a\u8981\u70b9\u7684\u91cd\u8981\u6027\u5e76\u610f\u8bc6\u5230\u6839\u636e\u5177\u4f53\u9879\u76ee\u548c\u9700\u6c42\u5b83\u4eec\u7684\u4f18\u5148\u7ea7\u53ef\u80fd\u4f1a\u6709\u6240\u53d8\u5316\u4e5f\u5f88\u91cd\u8981\u3002<\/p>\n

          \u6211\u5011\u5c07\u9010\u4e00\u63a2\u8a0e\u6bcf\u500b\u8981\u9ede\u7684\u6df1\u5ea6\u5167\u5bb9\u3002<\/p>\n

          \u8b6c\u5982<\/h2>\n

          \u5f53\u7136\u4f1a\u4f7f\u7528\u5177\u4f53\u7684\u7684\u5b9e\u4f8b\u6765\u89e3\u91ca\u6bcf\u4e2a\u8981\u70b9\u3002<\/p>\n

          1. \u518d\u6b21\u4f7f\u7528\u6027<\/h3>\n

          \u5728\u4e00\u4e2a\u7f51\u9875\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u5047\u8bbe\u5728\u591a\u4e2a\u9875\u9762\u6216\u4f4d\u7f6e\u4e0a\u4f7f\u7528\u4e86\u76f8\u540c\u7684\u6309\u94ae\u8bbe\u8ba1\u3002\u5982\u679c\u6309\u94ae\u7684\u8bbe\u8ba1\u6216\u884c\u4e3a\u53d1\u751f\u53d8\u5316\uff0c\u5bf9\u6bcf\u4e2a\u4f4d\u7f6e\u8fdb\u884c\u4fee\u6539\u5c06\u975e\u5e38\u4f4e\u6548\u3002<\/p>\n

          \u89e3\u51b3\u65b9\u6848\uff1a
          \n\u5c06\u6309\u94ae\u4f5c\u4e3a\u72ec\u7acb\u7684React\u7ec4\u4ef6\u521b\u5efa\uff0c\u8fd9\u6837\u4e00\u65e6\u8fdb\u884c\u66f4\u6539\uff0c\u6240\u6709\u76f8\u5173\u7684\u5730\u65b9\u90fd\u4f1a\u88ab\u540c\u6b65\u66f4\u65b0\uff0c\u4ece\u800c\u4f7f\u7ef4\u62a4\u53d8\u5f97\u66f4\u52a0\u7b80\u4fbf\u3002<\/p>\n

          function<\/span> CustomButton<\/span>(<\/span>props<\/span>)<\/span> {<\/span>\r\n  return<\/span> <<\/span>button<\/span> className<\/span>=<\/span>\"custom-button\"<\/span> {<\/span>...<\/span>props<\/span>}<\/span>><\/span>{<\/span>props<\/span>.<\/span>children<\/span>}<\/span><\/<\/span>button<\/span>>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
          2. \u4e0d\u53d8\u6027<\/h3>\n
          \u5047\u8bbe\u6211\u4eec\u9700\u8981\u66f4\u65b0\u6570\u7ec4\u4e2d\u7684\u7279\u5b9a\u9879\u76ee\u3002 de .)<\/p>\n
          \u4e0d\u826f\u65b9\u6cd5\uff1a
          \n\u5982\u679c\u76f4\u63a5\u66f4\u6539\u8be5\u9879\uff0cReact\u7684\u91cd\u65b0\u6e32\u67d3\u4f18\u5316\u5c06\u65e0\u6cd5\u8d77\u4f5c\u7528\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n
          function<\/span> updateItem<\/span>(<\/span>items<\/span>,<\/span> index<\/span>,<\/span> newValue<\/span>)<\/span> {<\/span>\r\n  items<\/span>[<\/span>index<\/span>]<\/span> =<\/span> newValue<\/span>;<\/span>\r\n  return<\/span> items<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
          \u4e00\u4e2a\u597d\u7684\u65b9\u6cd5\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5e76\u53ea\u5728\u5176\u4e2d\u4fee\u6539\u7279\u5b9a\u7684\u9879\u76ee\u3002\u8fd9\u6837\u53ef\u4ee5\u6709\u6548\u5730\u4f18\u5316React\u7684\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n
          function<\/span> updateItem<\/span>(<\/span>items<\/span>,<\/span> index<\/span>,<\/span> newValue<\/span>)<\/span> {<\/span>\r\n  return<\/span> [<\/span>\r\n    ...<\/span>items<\/span>.<\/span>slice<\/span>(<\/span>0<\/span>,<\/span> index<\/span>),<\/span>\r\n    newValue<\/span>,<\/span>\r\n    ...<\/span>items<\/span>.<\/span>slice<\/span>(<\/span>index<\/span> +<\/span> 1<\/span>),<\/span>\r\n  ];<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
          3. \u72b6\u6001\u7ba1\u7406 (zhuangtai guanli)<\/h3>\n
          \u5b9e\u4f8b\uff1a
          \n\u5f53\u7528\u6237\u6839\u636e\u884c\u52a8\u9700\u6c42\uff0c\u5728\u591a\u4e2a\u7ec4\u4ef6\u4e4b\u95f4\u9700\u8981\u5171\u4eab\u6216\u66f4\u65b0\u6570\u636e\u65f6\u3002<\/p>\n
          \u5728\u4e2d\u6587\u4e2d\uff0c\u539f\u6587\u7684\u610f\u601d\u662f\uff1a\u5982\u679c\u9891\u7e41\u5730\u4ece\u7236\u7ec4\u4ef6\u5411\u5b50\u7ec4\u4ef6\u4f20\u9012props\uff0c\u4f1a\u5bfc\u81f4\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u53d8\u5dee\u3002<\/p>\n
          \u4e00\u4e2a\u53ef\u80fd\u7684\u7ffb\u8bd1\u662f\uff1a\u4e0d\u826f\u7684\u505a\u6cd5\u662f\uff0c\u7ecf\u5e38\u4ece\u7236\u7ec4\u4ef6\u4f20\u9012props\u5230\u5b50\u7ec4\u4ef6\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027\u7684\u56f0\u96be\u589e\u52a0\u3002<\/p>\n
          \u826f\u597d\u7684\u505a\u6cd5\u662f\u4f7f\u7528\u72b6\u6001\u7ba1\u7406\u5e93\uff08\u4f8b\u5982\uff1aRedux\u6216Context API\uff09\u6765\u7edf\u4e00\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u7684\u72b6\u6001\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u4ece\u4efb\u4f55\u7ec4\u4ef6\u4e2d\u8bbf\u95ee\u548c\u66f4\u65b0\u72b6\u6001\u3002<\/p>\n
          const<\/span> UserContext<\/span> =<\/span> React<\/span>.<\/span>createContext<\/span>();<\/span>\r\n\r\nfunction<\/span> App<\/span>()<\/span> {<\/span>\r\n  const<\/span> [<\/span>user<\/span>,<\/span> setUser<\/span>]<\/span> =<\/span> React<\/span>.<\/span>useState<\/span>(<\/span>null<\/span>);<\/span>\r\n\r\n  return <\/span>(<\/span>\r\n    <<\/span>UserContext<\/span>.<\/span>Provider<\/span> value<\/span>=<\/span>{<\/span>{<\/span> user<\/span>,<\/span> setUser<\/span> }<\/span>}<\/span>><\/span>\r\n      <<\/span>Navbar<\/span> \/><\/span>\r\n      <<\/span>UserProfile<\/span> \/><\/span>\r\n    <\/<\/span>UserContext<\/span>.<\/span>Provider<\/span>><\/span>\r\n  );<\/span>\r\n}<\/span>\r\n\r\nfunction<\/span> Navbar<\/span>()<\/span> {<\/span>\r\n  const<\/span> {<\/span> user<\/span> }<\/span> =<\/span> React<\/span>.<\/span>useContext<\/span>(<\/span>UserContext<\/span>);<\/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\nfunction<\/span> UserProfile<\/span>()<\/span> {<\/span>\r\n  const<\/span> {<\/span> user<\/span>,<\/span> setUser<\/span> }<\/span> =<\/span> React<\/span>.<\/span>useContext<\/span>(<\/span>UserContext<\/span>);<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>h2<\/span>><\/span>{<\/span>user<\/span>.<\/span>name<\/span>}<\/span><\/<\/span>h2<\/span>><\/span>\r\n      <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>()<\/span> =><\/span> setUser<\/span>(<\/span>null<\/span>)<\/span>}<\/span>><\/span>Logout<\/<\/span>button<\/span>><\/span>\r\n    <\/<\/span>div<\/span>><\/span>\r\n  );<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
          \u4e0a\u8ff0\u7684\u4f8b\u5b50\u88ab\u7b80\u5316\u4e86\uff0c\u4f46\u5c55\u793a\u4e86\u6bcf\u4e2a\u8981\u70b9\u7684\u57fa\u672c\u601d\u60f3\u548c\u4f18\u70b9\u3002<\/p>\n
          \u63a8\u8350\u907f\u514d\u76f4\u63a5\u66f4\u6539State\u6216Props\uff0c\u4ee5\u514d\u5f15\u8d77\u4e0d\u5fc5\u8981\u7684\u5173\u6ce8\u3002<\/h2>\n
          \u4f5c\u4e3aReact\u7684\u4e3b\u8981\u7279\u70b9\u4e4b\u4e00\uff0c\u5efa\u8bae\u907f\u514d\u76f4\u63a5\u4fee\u6539state\u548cprops\u3002
          \n\u662f\u4e0d\u5141\u8bb8\u8fdb\u884c\u5f15\u7528\u4f20\u9012\u5417\uff1f<\/p>\n
          \u662f\u7684\uff0c\u786e\u5207\u6765\u8bf4\uff0cReact\u7684state\u548cprops\u5e94\u8be5\u4fdd\u6301\u4e0d\u53d8\u6027\u3002\u8fd9\u610f\u5473\u7740\u4e0d\u76f4\u63a5\u4fee\u6539\u5f15\u7528\u7c7b\u578b\u6570\u636e\uff0c\u5982\u5bf9\u8c61\u6216\u6570\u7ec4\uff0c\u800c\u662f\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u6216\u6570\u7ec4\u6765\u8fdb\u884c\u66f4\u65b0\u3002<\/p>\n
          \u5f53 React \u5224\u65ad\u9700\u8981\u91cd\u65b0\u6e32\u67d3\u65f6\uff0c\u5b83\u4f1a\u6d45\u6bd4\u8f83\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u5f15\u7528\u3002\u53ea\u8981\u5f15\u7528\u4e0d\u53d8\uff0c\u5c31\u8ba4\u4e3a\u6ca1\u6709\u66f4\u65b0\u53d1\u751f\u3002\u4e3a\u4e86\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u91cd\u65b0\u6e32\u67d3\uff0c\u5efa\u8bae\u4fdd\u6301\u4e0d\u53ef\u53d8\u6027\uff0c\u5229\u7528\u8fd9\u4e2a\u7279\u6027\u3002<\/p>\n
          \u6211\u5c06\u5728\u4e0b\u9762\u7ed9\u51fa\u5177\u4f53\u7684\u4f8b\u5b50\u3002<\/p>\n
          \u5982\u679c\u76f4\u63a5\u4fee\u6539\uff08\u4e0d\u63a8\u8350\uff09\uff1a<\/p>\n
          this<\/span>.<\/span>state<\/span> =<\/span> {<\/span>\r\n  items<\/span>:<\/span> [<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>]<\/span>\r\n};<\/span>\r\n\r\n\/\/ \u76f4\u63a5\u5909\u66f4<\/span>\r\nthis<\/span>.<\/span>state<\/span>.<\/span>items<\/span>.<\/span>push<\/span>(<\/span>4<\/span>);<\/span>\r\nthis<\/span>.<\/span>setState<\/span>({<\/span> items<\/span>:<\/span> this<\/span>.<\/span>state<\/span>.<\/span>items<\/span> });<\/span>\r\n<\/code><\/pre>\n
          \u5728\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u7531\u4e8eitems\u6570\u7ec4\u7684\u5f15\u7528\u6ca1\u6709\u6539\u53d8\uff0c\u6240\u4ee5React\u7684\u91cd\u65b0\u6e32\u67d3\u4f18\u5316\u65e0\u6cd5\u8d77\u4f5c\u7528\u3002<\/p>\n
          \u5982\u679c\u9700\u8981\u521b\u5efa\u5e76\u66f4\u65b0\u4e00\u4e2a\u65b0\u6570\u7ec4\uff08\u63a8\u8350\u7684\u65b9\u5f0f\uff09\uff0c\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
          this<\/span>.<\/span>state<\/span> =<\/span> {<\/span>\r\n  items<\/span>:<\/span> [<\/span>1<\/span>,<\/span> 2<\/span>,<\/span> 3<\/span>]<\/span>\r\n};<\/span>\r\n\r\n\/\/ \u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u6210\u3057\u3066\u66f4\u65b0<\/span>\r\nthis<\/span>.<\/span>setState<\/span>({<\/span> items<\/span>:<\/span> [...<\/span>this<\/span>.<\/span>state<\/span>.<\/span>items<\/span>,<\/span> 4<\/span>]<\/span> });<\/span>\r\n<\/code><\/pre>\n
          \u901a\u8fc7\u8fd9\u79cd\u65b9\u6cd5\uff0c\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\uff0c\u5e76\u4e14items\u6570\u7ec4\u7684\u5f15\u7528\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u4ece\u800c\u6709\u6548\u5730\u5b9e\u73b0React\u7684\u91cd\u65b0\u6e32\u67d3\u4f18\u5316\u3002<\/p>\n
          \u51fa\u4e8e\u76f8\u540c\u7684\u539f\u56e0\uff0c\u4e0d\u5e94\u76f4\u63a5\u66f4\u6539props\u3002props\u662f\u4ece\u7236\u7ec4\u4ef6\u4f20\u9012\u7684\u6570\u636e\uff0c\u5b50\u7ec4\u4ef6\u4e0d\u5e94\u8be5\u76f4\u63a5\u66f4\u6539\u5b83\u3002\u5e94\u6839\u636e\u9700\u8981\u901a\u77e5\u7236\u7ec4\u4ef6\u8fdb\u884c\u66f4\u6539\uff0c\u5e76\u91c7\u53d6\u6d41\u7a0b\u4f7f\u7236\u7ec4\u4ef6\u66f4\u65b0\u72b6\u6001\u3002<\/p>\n
          \u5728Angular\u4e2d\uff0c\u6211\u4eec\u662f\u5426\u4e0d\u80fd\u4f7f\u7528\u5f15\u7528\u4f20\u9012\uff1f<\/h2>\n
          Angular\u548cReact\u662f\u4e0d\u540c\u7684\u6846\u67b6\uff0c\u5b83\u4eec\u5904\u7406\u6570\u636e\u548c\u53d8\u5316\u68c0\u6d4b\u7684\u673a\u5236\u4e5f\u4e0d\u540c\u3002\u4e3a\u4e86\u7406\u89e3Angular\u4e2d\u7684\u6570\u636e\u53d8\u5316\u6982\u5ff5\uff0c\u9700\u8981\u5f3a\u8c03\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n
            \n
          1. \n
              \u4fa6\u6d4b\u53d8\u66f4\uff08Change Detection\uff09\uff1a<\/ol>\n<\/li>\n<\/ol>\n
               <\/p>\n
                \n
              1. \n
                  Angular \u7684\u4fa6\u6d4b\u53d8\u66f4\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4f1a\u5728\u7ec4\u4ef6\u5c5e\u6027\u7684\u503c\u4e0e\u4e0a\u6b21\u4e0d\u540c\u7684\u65f6\u5019\u89e6\u53d1\u3002\u8fd9\u9002\u7528\u4e8e\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff08\u6570\u503c\u3001\u5b57\u7b26\u4e32\u3001\u5e03\u5c14\u503c\uff09\u4ee5\u53ca\u5bf9\u8c61\u548c\u6570\u7ec4\u7684\u5f15\u7528\u53d1\u751f\u53d8\u5316\u7684\u60c5\u51b5\u3002<\/ol>\n<\/li>\n<\/ol>\n
                  \u4e0d\u53ef\u53d8\u6027\uff08Immutability\uff09\uff1a
                  \n\u5728Angular\u4e2d\uff0c\u63a8\u8350\u4f46\u4e0d\u5f3a\u5236\u5b9e\u65bd\u4e0d\u53ef\u53d8\u6027\u3002\u7136\u800c\uff0c\u5c0a\u91cd\u4e0d\u53ef\u53d8\u6027\u53ef\u4ee5\u4f18\u5316\u53d8\u66f4\u4fa6\u6d4b\u5e76\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u9884\u6d4b\u6027\u3002\u7279\u522b\u662f\u5728\u4f7f\u7528OnPush\u53d8\u66f4\u4fa6\u6d4b\u7b56\u7565\u65f6\uff0c\u4e0d\u53ef\u53d8\u6570\u636e\u975e\u5e38\u6709\u6548\u3002<\/p>\n
                  OnPush\u53d8\u66f4\u4fa6\u6d4b\u7b56\u7565\uff1a
                  \n\u4f7f\u7528\u6b64\u7b56\u7565\u65f6\uff0c\u53ea\u6709\u5f53\u7ec4\u4ef6\u7684\u8f93\u5165\u5c5e\u6027\u5f15\u7528\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u6216\u8005\u5728\u7ec4\u4ef6\u5185\u90e8\u53d1\u751f\u660e\u786e\u7684\u4e8b\u4ef6\uff08\u4f8b\u5982\u6309\u94ae\u70b9\u51fb\uff09\u65f6\uff0c\u624d\u4f1a\u6267\u884c\u53d8\u66f4\u4fa6\u6d4b\u3002\u56e0\u6b64\uff0c\u901a\u8fc7\u4fdd\u6301\u4e0d\u53ef\u53d8\u6027\uff0c\u53ef\u4ee5\u6700\u5927\u5316\u53d1\u6325\u6b64\u7b56\u7565\u7684\u6548\u679c\u3002<\/p>\n
                  \u7ed3\u8bba:
                  \nAngular\u4e5f\u8ba4\u4e3a\u4fdd\u6301\u4e0d\u53d8\u6027\u662f\u4e00\u4e2a\u826f\u597d\u7684\u505a\u6cd5\u3002\u7279\u522b\u662f\u4e3a\u4e86\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u548c\u63d0\u9ad8\u53d8\u66f4\u68c0\u6d4b\u7684\u53ef\u9884\u6d4b\u6027\uff0c\u5efa\u8bae\u5c0a\u91cd\u4e0d\u53d8\u6027\u539f\u5219\u3002\u7136\u800c\uff0c\u4e0eReact\u4e0d\u540c\uff0cAngular\u4e0d\u5f3a\u5236\u8981\u6c42\u8fd9\u6837\u505a\uff0c\u56e0\u6b64\u9009\u62e9\u9002\u5f53\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u5e94\u7528\u7a0b\u5e8f\u7684\u8981\u6c42\u548c\u60c5\u51b5\u662f\u5f88\u91cd\u8981\u7684\u3002<\/p>\n
                  \u5728Angular\u4e2d\u7684\u5f15\u7528\u4f20\u9012\u793a\u4f8b\u548c\u5904\u7406\u65b9\u6cd5\u3002<\/h2>\n
                  \u660e\u767d\u4e86\u3002\u4e0b\u9762\u6211\u5c06\u5c55\u793a\u5728Angular\u4e2d\u5904\u7406\u5f15\u7528\u4f20\u9012\u95ee\u9898\u4ee5\u53ca\u901a\u8fc7\u4fdd\u6301\u4e0d\u53d8\u6027\u6765\u89e3\u51b3\u7684\u5b9e\u4f8b\u3002<\/p>\n
                  1. \u7528\u53c2\u7167\u4f20\u9012\u65b9\u5f0f\u5b58\u5728\u54ea\u4e9b\u95ee\u9898\uff1f<\/h3>\n
                  \u5728Angular\u7ec4\u4ef6\u4e2d\uff0c\u5f53\u4ece\u7236\u7ec4\u4ef6\u5411\u5b50\u7ec4\u4ef6\u4f20\u9012\u6570\u636e\u65f6\uff0c\u76f4\u63a5\u4fee\u6539\u5bf9\u8c61\u6216\u6570\u7ec4\u53ef\u80fd\u4f1a\u5f71\u54cd\u5230\u7236\u7ec4\u4ef6\u3002<\/p>\n
                  \/\/ \u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/span>\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-parent<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <app-child [data]=\"myData\"><\/app-child>\r\n    <button (click)=\"logData()\">Log Data<\/button>\r\n  `<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ParentComponent<\/span> {<\/span>\r\n  myData<\/span> =<\/span> {<\/span> value<\/span>:<\/span> '<\/span>original<\/span>'<\/span> };<\/span>\r\n\r\n  logData<\/span>()<\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>this<\/span>.<\/span>myData<\/span>);<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n\r\n\/\/ \u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/span>\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-child<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <button (click)=\"modifyData()\">Modify Data<\/button>\r\n  `<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ChildComponent<\/span> {<\/span>\r\n  @<\/span>Input<\/span>()<\/span> data<\/span>:<\/span> any<\/span>;<\/span>\r\n\r\n  modifyData<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>data<\/span>.<\/span>value<\/span> =<\/span> '<\/span>modified<\/span>'<\/span>;<\/span>  \/\/ \u3053\u308c\u306f\u53c2\u7167\u6e21\u3057\u306e\u305f\u3081\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30c7\u30fc\u30bf\u3082\u5909\u66f4\u3055\u308c\u308b<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  \u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5f53\u6267\u884c\u5b50\u7ec4\u4ef6\u7684modifyData\u65b9\u6cd5\u65f6\uff0c\u7236\u7ec4\u4ef6\u7684myData\u4e5f\u4f1a\u88ab\u4fee\u6539\u3002<\/p>\n
                  2. \u4fdd\u6301\u4e0d\u53d8\u6027\u7684\u5904\u7406\u65b9\u6cd5<\/h3>\n
                  \u4e3a\u4e86\u89e3\u51b3\u4e0a\u8ff0\u95ee\u9898\uff0c\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u65b0\u7684\u5bf9\u8c61\u6216\u6570\u7ec4\u5e76\u8fdb\u884c\u66f4\u65b0\u6765\u4fdd\u6301\u4e0d\u53d8\u6027\u3002<\/p>\n
                  \/\/ \u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u4fee\u6b63\u7248<\/span>\r\n@<\/span>Component<\/span>({<\/span>\r\n  selector<\/span>:<\/span> '<\/span>app-child<\/span>'<\/span>,<\/span>\r\n  template<\/span>:<\/span> `\r\n    <button (click)=\"modifyData()\">Modify Data<\/button>\r\n  `<\/span>\r\n})<\/span>\r\nexport<\/span> class<\/span> ChildComponent<\/span> {<\/span>\r\n  @<\/span>Input<\/span>()<\/span> data<\/span>:<\/span> any<\/span>;<\/span>\r\n\r\n  modifyData<\/span>()<\/span> {<\/span>\r\n    this<\/span>.<\/span>data<\/span> =<\/span> {<\/span> ...<\/span>this<\/span>.<\/span>data<\/span>,<\/span> value<\/span>:<\/span> '<\/span>modified<\/span>'<\/span> };<\/span>  \/\/ \u65b0\u3057\u3044\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u66f4\u65b0<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                  \u7136\u800c\uff0c\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u540e\uff0c\u5b50\u7ec4\u4ef6\u5185\u7684\u6570\u636e\u5f15\u7528\u5c06\u4f1a\u66f4\u65b0\uff0c\u4f46\u662f\u7236\u7ec4\u4ef6\u4e2d\u7684myData\u5f15\u7528\u4fdd\u6301\u4e0d\u53d8\u3002\u56e0\u6b64\uff0c\u4e3a\u4e86\u901a\u77e5\u7236\u7ec4\u4ef6\u5173\u4e8e\u8fd9\u4e2a\u53d8\u5316\uff0c\u989d\u5916\u7684\u65b9\u6cd5\u662f\u5fc5\u9700\u7684\uff0c\u6bd4\u5982\u4f7f\u7528Output\u88c5\u9970\u5668\u6765\u8fdb\u884c\u4e8b\u4ef6\u53d1\u5c04\u3002<\/p>\n
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