{"id":38306,"date":"2023-11-24T09:07:37","date_gmt":"2022-12-24T00:37:26","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90react-18-%e6%96%b0%e5%8a%9f%e8%83%bd%e3%80%91%e4%bb%80%e4%b9%88%e6%98%af%e8%87%aa%e5%8a%a8%e6%89%b9%e5%a4%84%e7%90%86%e3%80%90%e7%ae%80%e5%8d%95%e6%98%93%e6%87%82%ef%bc%8c%e9%80%82%e5%90%88\/"},"modified":"2024-05-04T10:34:17","modified_gmt":"2024-05-04T02:34:17","slug":"%e3%80%90react-18-%e6%96%b0%e5%8a%9f%e8%83%bd%e3%80%91%e4%bb%80%e4%b9%88%e6%98%af%e8%87%aa%e5%8a%a8%e6%89%b9%e5%a4%84%e7%90%86%e3%80%90%e7%ae%80%e5%8d%95%e6%98%93%e6%87%82%ef%bc%8c%e9%80%82%e5%90%88","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90react-18-%e6%96%b0%e5%8a%9f%e8%83%bd%e3%80%91%e4%bb%80%e4%b9%88%e6%98%af%e8%87%aa%e5%8a%a8%e6%89%b9%e5%a4%84%e7%90%86%e3%80%90%e7%ae%80%e5%8d%95%e6%98%93%e6%87%82%ef%bc%8c%e9%80%82%e5%90%88\/","title":{"rendered":"\u3010React 18 \u65b0\u529f\u80fd\u3011\u4ec0\u4e48\u662f\u81ea\u52a8\u6279\u5904\u7406?\u3010\u7b80\u5355\u6613\u61c2\uff0c\u9002\u5408\u521d\u5b66\u8005\u3011"},"content":{"rendered":"

\u9996\u5148<\/h2>\n

\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u7ee7\u7eed\u89e3\u91caReact\u7684\u65b0\u529f\u80fd\u4e4bAutomatic Batching\uff01\u8fd9\u662fReact18\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u6240\u4ee5\u8bf7\u52a1\u5fc5\u9605\u8bfb\u672c\u6587\u4ee5\u4e86\u89e3\u6982\u8ff0\uff01<\/p>\n

\u201cAutomatic Batching\u662f\u4ec0\u4e48…?\u201d<\/h2>\n

\u4ece\u4ee5\u4e0b\u516c\u5f0f\u4e2d\u5f15\u7528<\/p>\n

\u81ea\u52a8\u6279\u5904\u7406\u662f\u6307React\u4e3a\u4e86\u6027\u80fd\u800c\u5c06\u591a\u4e2a\u72b6\u6001\u66f4\u65b0\u5206\u7ec4\u5e76\u5408\u5e76\u4e3a\u5355\u4e2a\u91cd\u65b0\u6e32\u67d3\u3002\u5728\u81ea\u52a8\u6279\u5904\u7406\u4e4b\u524d\uff0c\u53ea\u6709React\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u7684\u66f4\u65b0\u624d\u4f1a\u8fdb\u884c\u6279\u5904\u7406\u3002\u4f7f\u7528promise\u3001setTimeout\u3001\u672c\u5730\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u6216\u5176\u4ed6\u4efb\u4f55\u4e8b\u4ef6\u4e2d\u53d1\u751f\u7684\u66f4\u65b0\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e0d\u4f1a\u8fdb\u884c\u6279\u5904\u7406\u3002\u901a\u8fc7\u81ea\u52a8\u6279\u5904\u7406\uff0c\u8fd9\u4e9b\u66f4\u65b0\u4e5f\u4f1a\u81ea\u52a8\u8fdb\u884c\u6279\u5904\u7406\u3002<\/p><\/blockquote>\n

\u7b80\u5355\u6765\u8bf4\uff0c\u5b83\u6307\u7684\u662f\u901a\u8fc7\u5c06\u66f4\u65b0\u96c6\u6210\u5230\u4e00\u6b21\u91cd\u65b0\u6e32\u67d3\u4e2d\u6765\u63d0\u9ad8\u6027\u80fd\u7684\u529f\u80fd\u3002<\/p>\n

\u5728React18\u4e2d\uff0c\u5bf9\u4e8epromise\u3001setTimeout\u548cthen\u7b49\u4e8b\u4ef6\uff0c\u4e5f\u4f1a\u81ea\u52a8\u8fdb\u884c\u6279\u5904\u7406\u3002\u901a\u8fc7\u8fd9\u4e2a\u529f\u80fd\uff0cReact\u5185\u90e8\u5c06\u6267\u884c\u91cd\u65b0\u6e32\u67d3\u7684\u5de5\u4f5c\u6574\u5408\u5728\u4e00\u8d77\uff0c\u800c\u4e0d\u662f\u6bcf\u6b21\u8c03\u7528set\u51fd\u6570\u90fd\u8fdb\u884c\u91cd\u65b0\u6e32\u67d3\uff0c\u53ef\u4ee5\u540c\u65f6\u8fdb\u884c\u66f4\u65b0\u5e76\u4e00\u6b21\u6027\u5b8c\u6210\uff01<\/p>\n

\u7531\u4e8e\u5b9e\u9645\u7f16\u5199\u548c\u8fd0\u884c\u4ee3\u7801\u6bd4\u6982\u5ff5\u7406\u89e3\u66f4\u6613\u4e8e\u7406\u89e3\uff0c\u6211\u8ba4\u4e3a\u6211\u4eec\u5e94\u8be5\u52a8\u624b\u64cd\u4f5c\u4e00\u4e0b\uff01<\/p>\n

\u8ba9\u6211\u4eec\u4eb2\u81ea\u8bd5\u7740\u8fd0\u884c\u8fd9\u6bb5\u4ee3\u7801\u5427<\/h2>\n

\u5728React 17\u7248\u672c\u4e2d\u7684\u884c\u4e3a\u3002<\/h3>\n

\u8bf7\u53c2\u7167\u4ee5\u4e0b\u6587\u7ae0\uff0c\u5c06\u7248\u672c\u964d\u7ea7\u81f317\u3002<\/p>\n

 <\/p>\n

\u8bf7\u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u66f4\u65b0\u4ee5\u4e0b\u72b6\u6001\u4ee5\u8fdb\u884c\u5b9e\u9645\u64cd\u4f5c\u786e\u8ba4\u7684\u6587\u4ef6\uff01<\/p>\n

import<\/span> {<\/span> useState<\/span> }<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>\r\n\r\nexport<\/span> const<\/span> AutoBatchEventHandler<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>AutoBatchEventHandler rendered!<\/span>'<\/span>)<\/span>\r\n  const<\/span> [<\/span>state1<\/span>,<\/span> setState1<\/span>]<\/span> =<\/span> useState<\/span><<\/span>number<\/span>><\/span>(<\/span>0<\/span>)<\/span>\r\n  const<\/span> [<\/span>state2<\/span>,<\/span> setState2<\/span>]<\/span> =<\/span> useState<\/span><<\/span>number<\/span>><\/span>(<\/span>0<\/span>)<\/span>\r\n\r\n  const<\/span> onClickUpdateButton<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>state1<\/span>)<\/span>\r\n    setState1<\/span>(<\/span>state1<\/span> =><\/span> state1<\/span> +<\/span> 1<\/span>)<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>state1<\/span>)<\/span>\r\n    setState2<\/span>(<\/span>state2<\/span> =><\/span> state2<\/span> +<\/span> 2<\/span>)<\/span>\r\n  }<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>p<\/span>><\/span>Automatic<\/span> Batching\u78ba\u8a8d\u7528<\/span>(<\/span>React17<\/span>)<\/span><<\/span>\/p<\/span>>\r\n<\/span>      <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>onClickUpdateButton<\/span>}<\/span>><\/span>update<\/span> state<\/span>!<<\/span>\/button<\/span>>\r\n<\/span>      <<\/span>p<\/span>><\/span>State1<\/span>:<\/span> {<\/span>state1<\/span>}<\/span><<\/span>\/p<\/span>>\r\n<\/span>      <<\/span>p<\/span>><\/span>State2<\/span>:<\/span> {<\/span>state2<\/span>}<\/span><<\/span>\/p<\/span>>\r\n<\/span>    <<\/span>\/div<\/span>>\r\n<\/span>  )<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u60a8\u5c06\u539f\u59cb\u7684App.tsx\u4e2d\u7684\u8c03\u7528\u65b9\u5f0f\u63cf\u8ff0\u5982\u4e0b\u3002<\/p>\n
import<\/span> '<\/span>.\/App.css<\/span>'<\/span>;<\/span>\r\nimport<\/span> {<\/span> AutoBatchEventHandler<\/span> }<\/span> from<\/span> '<\/span>.\/components\/AutoBatchEventHandler<\/span>'<\/span>;<\/span>\r\n\r\nfunction<\/span> App<\/span>()<\/span> {<\/span>\r\n\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span> className<\/span>=<\/span>\"<\/span>App<\/span>\"<\/span>><\/span>\r\n      <<\/span>AutoBatchEventHandler<\/span> \/><\/span>\r\n    <<\/span>\/div<\/span>>\r\n<\/span>  );<\/span>\r\n}<\/span>\r\n\r\nexport<\/span> default<\/span> App<\/span>;<\/span>\r\n\r\n<\/code><\/pre>\n
\"REACT17<\/div>\n
\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a
\n\u4ece\u4e0a\u9762\u7684gif\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u5373\u4f7f\u8fdb\u884c\u4e86\u591a\u6b21\u72b6\u6001\u66f4\u65b0\uff0c\u91cd\u65b0\u6e32\u67d3\u4e5f\u53ea\u4f1a\u53d1\u751f\u4e00\u6b21\u3002
\n\u5373\u4f7f\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e2d\u66f4\u65b0\u4e86\u8bb8\u591a\u72b6\u6001\uff0c\u72b6\u6001\u66f4\u65b0\u4f1a\u88ab\u6279\u5904\u7406\u6210\u4e00\u4e2a\u5904\u7406\uff0c\u6240\u4ee5\u91cd\u65b0\u6e32\u67d3\u53ea\u4f1a\u53d1\u751f\u4e00\u6b21\uff01
\n\u8fd9\u662fReact17\u4e2d\u5df2\u7ecf\u7eb3\u5165\u7684\u529f\u80fd\u3002<\/p>\n
\u8bf7\u5728\u5176\u4ed6\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u4e4b\u5916\u4e5f\u8981\u786e\u8ba4\u64cd\u4f5c\uff0c\u56e0\u6b64\u8bf7\u521b\u5efa\u4ee5\u4e0b\u6587\u4ef6\uff01<\/p>\n
import<\/span> {<\/span> useState<\/span> }<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>\r\n\r\ntype<\/span> Comment<\/span> =<\/span> {<\/span>\r\n  postId<\/span>:<\/span> number<\/span>;<\/span>\r\n  id<\/span>:<\/span> number<\/span>;<\/span>\r\n  name<\/span>:<\/span> string<\/span>;<\/span>\r\n  email<\/span>:<\/span> string<\/span>;<\/span>\r\n  body<\/span>:<\/span> string<\/span>;<\/span>\r\n}<\/span>\r\n\r\nexport<\/span> const<\/span> AutoBatchOther<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n  console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>AutoBatchOther rendered!<\/span>'<\/span>)<\/span>\r\n\r\n  const<\/span> [<\/span>comments<\/span>,<\/span> setComments<\/span>]<\/span> =<\/span> useState<\/span><<\/span>Comment<\/span>[]<\/span> |<\/span> null<\/span>><\/span>(<\/span>null<\/span>)<\/span>\r\n  const<\/span> [<\/span>isFinishApi<\/span>,<\/span> setIsFinishApi<\/span>]<\/span> =<\/span> useState<\/span><<\/span>boolean<\/span>><\/span>(<\/span>false<\/span>)<\/span>\r\n  const<\/span> [<\/span>state3<\/span>,<\/span> setState3<\/span>]<\/span> =<\/span> useState<\/span><<\/span>string<\/span>><\/span>(<\/span>''<\/span>)<\/span>\r\n\r\n\r\n  const<\/span> onClickExcuteApi<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n    fetch<\/span>(<\/span>'<\/span>https:\/\/jsonplaceholder.typicode.com\/comments\/<\/span>'<\/span>)<\/span>\r\n      .<\/span>then<\/span>(<\/span>response<\/span> =><\/span> response<\/span>.<\/span>json<\/span>())<\/span>\r\n      .<\/span>then<\/span>((<\/span>data<\/span>)<\/span> =><\/span> {<\/span>\r\n        setComments<\/span>(<\/span>data<\/span>)<\/span>\r\n        setIsFinishApi<\/span>(<\/span>true<\/span>)<\/span>\r\n        setState3<\/span>(<\/span>'<\/span>updated<\/span>'<\/span>)<\/span>\r\n      })<\/span>\r\n  }<\/span>\r\n  return <\/span>(<\/span>\r\n    <<\/span>div<\/span>><\/span>\r\n      <<\/span>p<\/span>><\/span>Automatic<\/span> Batching\u78ba\u8a8d\u7528<\/span>(<\/span>\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u5916<\/span>)<\/span><<\/span>\/p<\/span>>\r\n<\/span>      <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>onClickExcuteApi<\/span>}<\/span>><\/span>API\u66f4\u65b0<\/span>\uff01<\/span><<\/span>\/button<\/span>>\r\n<\/span>      <<\/span>p<\/span>><\/span>isFinishApi<\/span>:<\/span> {<\/span>isFinishApi<\/span> ?<\/span> '<\/span>true<\/span>'<\/span> :<\/span> '<\/span>false<\/span>'<\/span>}<\/span><<\/span>\/p<\/span>>\r\n<\/span>      {<\/span>comments<\/span>?.<\/span>map<\/span>((<\/span>comment<\/span>)<\/span> =><\/span> <<\/span>p<\/span> key<\/span>=<\/span>{<\/span>comment<\/span>.<\/span>id<\/span>}<\/span>><\/span>{<\/span>comment<\/span>.<\/span>body<\/span>}<\/span><<\/span>\/p><\/span>)<\/span>}\r\n<\/span>    <<\/span>\/div<\/span>>\r\n<\/span>\r\n  )<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
App.tsx\u7684\u4e2d\u6587\u7ffb\u8bd1\u4e3a\uff1a\u5e94\u7528.tsx\u3002<\/p>\n
 import<\/span> '<\/span>.\/App.css<\/span>'<\/span>;<\/span>\r\n import<\/span> {<\/span> AutoBatchEventHandler<\/span> }<\/span> from<\/span> '<\/span>.\/components\/AutoBatchEventHandler<\/span>'<\/span>;<\/span>\r\n+<\/span>import<\/span> {<\/span> AutoBatchOther<\/span> }<\/span> from<\/span> '<\/span>.\/components\/AutoBatchOther<\/span>'<\/span>;<\/span>\r\n<\/span> function<\/span> App<\/span>()<\/span> {<\/span>\r\n\r\n   return <\/span>(<\/span>\r\n    <<\/span>div<\/span> className<\/span>=<\/span>\"App\"<\/span>><\/span>\r\n      <<\/span>AutoBatchEventHandler<\/span> \/><\/span>\r\n+     <<\/span>AutoBatchOther<\/span> \/><\/span>\r\n<\/span>    <\/<\/span>div<\/span>><\/span>\r\n   );<\/span>\r\n }<\/span> \r\n\r\n export<\/span> default<\/span> App<\/span>;<\/span>\r\n\r\n<\/code><\/pre>\n
\u4f7f\u7528Fetch API\uff0cAutoBatchOther.tsx\u6587\u4ef6\u7684\u4ee3\u7801\u7684\u7b80\u8981\u8bf4\u660e\u662f\u83b7\u53d6\u5e76\u663e\u793a\u8bc4\u8bba\u6570\u7ec4\u3002<\/p>\n
\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u6709\u5173Fetch API\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u70b9\u51fb\u8fd9\u91cc\u3002<\/p>\n
 <\/p>\n
\u8fd9\u6b21\u6211\u4eec\u6b63\u5728\u4f7f\u7528json placeholder\u6765\u8fdb\u884c\u6570\u636e\u83b7\u53d6\uff01<\/p>\n
\u73b0\u5728\u6211\u4eec\u6765\u786e\u8ba4\u4e00\u4e0b\u884c\u4e3a\u3002<\/p>\n
\u5f53\u5728\u6d4f\u89c8\u5668\u4e0a\u8fd0\u884c\u65f6…<\/p>\n
\"\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u591617.gif\"<\/div>\n
\u6211\u89c9\u5f97\u901a\u8fc7\u4e0a\u8ff0\u5185\u5bb9\u5c31\u53ef\u4ee5\u7406\u89e3\uff0c\u5f53\u6267\u884c onClickExcuteApi \u65f6\uff0c\u6211\u8ba4\u4e3a\u4f1a\u67093\u6b21\u91cd\u65b0\u6e32\u67d3\u3002\u8fd9\u6b21\u662f\u56e0\u4e3a\u5728.then\u7684\u5185\u90e8\uff0cset\u51fd\u6570\u88ab\u8c03\u7528\u4e863\u6b21\uff0c\u6240\u4ee5\u4ea7\u751f\u4e86\u50cfgif\u4e00\u6837\u7684\u884c\u4e3a\u3002<\/p>\n
React18\u7684\u884c\u4e3a<\/h3>\n
\u8bf7\u5148\u5c06Strict\u6a21\u5f0f\u5173\u95ed\u3002
\n\u5982\u679c\u4e0d\u6e05\u695a\u7684\u8bdd\uff0c\u8bf7\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
 <\/p>\n
\u8bf7\u5728 React18 \u4e2d\u51c6\u5907\u76f8\u540c\u7684\u6e90\u4ee3\u7801\uff01<\/p>\n
\u5c06 Automatic Batching \u786e\u8ba4\u7528\uff08React17\uff09\u66f4\u6539\u4e3a Automatic Batching \u786e\u8ba4\u7528\uff08React18\uff09\u7684\u663e\u793a\u540d\u79f0\uff0c\u5e76\u8fdb\u884c\u64cd\u4f5c\u786e\u8ba4\u3002<\/p>\n
\u6211\u8ba4\u4e3a\u5728\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u5916\u90e8\uff0c\u884c\u4e3a\u53ef\u80fd\u4e0d\u4f1a\u50cfReact17\u4e00\u6837\u6279\u5904\u7406\uff0c\u56e0\u6b64\u53ef\u80fd\u4f1a\u53d1\u751f\u591a\u6b21\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n
\"react18.gif\"<\/div>\n
\u901a\u8fc7\u5347\u7ea7\u5230React18\u7248\u672c\uff0c\u7279\u522b\u662f\u5f00\u53d1\u8005\u65e0\u9700\u624b\u52a8\u64cd\u4f5c\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u8fdb\u884c\u6279\u5904\u7406\u3002\u6b63\u5982\u6240\u8ff0\uff0c\u8fd9\u5c31\u662f\u81ea\u52a8\u6279\u5904\u7406\u3002<\/p>\n
\u5173\u4e8eFlushSync\u7684\u5185\u5bb9<\/h4>\n
\u6211\u4eec\u53ef\u4ee5\u7528flushSync\u5c06\u6b64\u64cd\u4f5c\u663e\u5f0f\u5730\u8f6c\u4e3a\u6279\u5904\u7406\u3002<\/p>\n
\u8bf7\u5728src\/components\/AutoBatchiEventHandler.tsx\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff01<\/p>\n
  import<\/span> {<\/span> useState<\/span> }<\/span> from<\/span> \"<\/span>react<\/span>\"<\/span>\r\n+ <\/span>import<\/span> {<\/span> flushSync<\/span> }<\/span> from<\/span> \"<\/span>react-dom<\/span>\"<\/span>\r\n<\/span>\r\n  export<\/span> const<\/span> AutoBatchEventHandler<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n    console<\/span>.<\/span>log<\/span>(<\/span>'<\/span>AutoBatchEventHandler rendered!<\/span>'<\/span>)<\/span>\r\n    const<\/span> [<\/span>state1<\/span>,<\/span> setState1<\/span>]<\/span> =<\/span> useState<\/span><<\/span>number<\/span>><\/span>(<\/span>0<\/span>)<\/span>\r\n    const<\/span> [<\/span>state2<\/span>,<\/span> setState2<\/span>]<\/span> =<\/span> useState<\/span><<\/span>number<\/span>><\/span>(<\/span>0<\/span>)<\/span>\r\n\r\n    const<\/span> onClickUpdateButton<\/span> =<\/span> ()<\/span> =><\/span> {<\/span>\r\n      console<\/span>.<\/span>log<\/span>(<\/span>state1<\/span>)<\/span>\r\n+ <\/span>    flushSync<\/span>(()<\/span> =><\/span> {<\/span>\r\n<\/span>        setState1<\/span>(<\/span>state1<\/span> =><\/span> state1<\/span> +<\/span> 1<\/span>)<\/span>\r\n+ <\/span>    })<\/span>\r\n<\/span>      console<\/span>.<\/span>log<\/span>(<\/span>state1<\/span>)<\/span>\r\n      setState2<\/span>(<\/span>state1<\/span> =><\/span> state1<\/span> +<\/span> 2<\/span>)<\/span>\r\n    }<\/span>\r\n    return <\/span>(<\/span>\r\n      <<\/span>div<\/span>><\/span>\r\n        <<\/span>p<\/span>><\/span>Automatic Batching\u78ba\u8a8d\u7528(React18)<\/<\/span>p<\/span>><\/span>\r\n        <<\/span>button<\/span> onClick<\/span>=<\/span>{<\/span>onClickUpdateButton<\/span>}<\/span>><\/span>State\u66f4\u65b0!<\/<\/span>button<\/span>><\/span>\r\n        <<\/span>p<\/span>><\/span>State1: {<\/span>state1<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n        <<\/span>p<\/span>><\/span>State2: {<\/span>state2<\/span>}<\/span><\/<\/span>p<\/span>><\/span>\r\n      <\/<\/span>div<\/span>><\/span>\r\n    )<\/span>\r\n  }<\/span>\r\n\r\n<\/code><\/pre>\n
\u8fd9\u6837\u7684\u8bdd…<\/p>\n
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