{"id":10008370,"date":"2024-02-20T16:01:25","date_gmt":"2024-02-20T08:01:25","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008370"},"modified":"2024-02-20T16:01:25","modified_gmt":"2024-02-20T08:01:25","slug":"%e4%bd%a0%e8%b8%a9%e8%bf%87-react-%e7%94%9f%e6%80%81%e7%9a%84-signal-%e5%9d%91%e5%90%97%ef%bc%9f%e4%b8%94%e7%9c%8b-helux-%e5%a6%82%e4%bd%95%e5%ba%94%e5%af%b9","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008370","title":{"rendered":"\u4f60\u8e29\u8fc7 react \u751f\u6001\u7684 signal \u5751\u5417\uff1f\u4e14\u770b helux \u5982\u4f55\u5e94\u5bf9"},"content":{"rendered":"

\u524d\u8a00<\/h2>\n

helux<\/a> \u662f\u4e00\u4e2a\u96c6atom<\/code>\u3001signal<\/code>\u3001\u4f9d\u8d56\u8ffd\u8e2a<\/code>\u4e3a\u4e00\u4f53\uff0c\u652f\u6301\u7ec6\u7c92\u5ea6\u54cd\u5e94\u5f0f\u66f4\u65b0\u7684\u72b6\u6001\u5f15\u64ce\uff0c\u517c\u5bb9\u6240\u6709\u7c7b react \u5e93\uff0c\u5305\u62ec react18\u3002<\/p>\n

\"1.png\"<\/p>\n

\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecdreact\u751f\u6001\u91cc\u5404\u65b9signal<\/code>\u7684\u5177\u4f53\u5b9e\u73b0\uff0c\u5e76\u63a2\u8ba8\u80cc\u540e\u9690\u85cf\u7684\u5751\u5bfc\u81f4\u7684\u53ef\u7528\u6027\u95ee\u9898\uff0c\u540c\u65f6\u4e5f\u4f1a\u7ed9\u51fahelux<\/code>\u4e2dsignal<\/code>\u5b9e\u73b0\u7684\u4f18\u52bf\uff0c\u5e76\u6559\u4f1a\u4f60\u4f7f\u7528signal<\/code> \u5199\u51fa0 hook<\/strong>\u7684react<\/code> \u72b6\u6001\u7ec4\u4ef6\u3002<\/p>\n

signal \u70ed\u6f6e<\/h2>\n

signal<\/strong>\u57282023 \u5e74\u6380\u8d77\u4e86\u4e00\u80a1\u70ed\u6f6e\uff0c\u5176\u5b9e\u8bf8\u591a\u6846\u67b6\u5f88\u65e9\u5c31\u5f00\u59cb\u4e3a\u5176\u5e03\u5c40\uff0cVue\u3001Solid.js\u3001Preact\u3001Svelte \u90fd\u5728\u4e0d\u540c\u65f6\u7684\u5f15\u5165\u4e86signal\uff0c\u67d0\u79cd\u7a0b\u5ea6\u6765\u8bf4 vue \u751a\u81f3\u53ef\u4ee5\u7b97\u662f signal \u7684\u9f3b\u7956\uff0cAngular\u4f5c\u8005\u53d1\u6587Signal\u662f\u524d\u7aef\u6846\u67b6\u7684\u672a\u6765<\/a>\u540e\uff0c\u57282023\u5e74\u672b\u7684Angular 17<\/code>\u91cc\u5f15\u5165\u4e86signal<\/code>\u5b9e\u73b0\uff0c\u53ef\u89c1\u5927\u5bb6\u5bf9signal<\/code>\u662f\u591a\u4e48\u7684\u76fc\u671b\u3002<\/p>\n

\u6211\u4eec\u89c2\u5bdf\u5982\u4e0bAngular<\/code>\u7684signal<\/code>\u4ee3\u7801\u793a\u4f8b<\/p>\n

import { signal, computed, effect } from '@angular\/core';\n\nexport class SignalExample {\n  count = signal(1);\n\n  \/\/ Get (Same in Template || Typescript)\n  getCount = () => this.count();\n\n  \/\/ Setters\n  reset = () => this.count.set(1);\n  increment = () => this.count.update((c) => c + 1);\n\n  \/\/ Computed\n  doubled = computed(() => this.count() * 2);\n\n  \/\/ Effects\n  logCount = effect(() => console.log(this.doubled()));\n}<\/code><\/pre>\n
\u53d1\u73b0\u4fdd\u6301\u4e86signal<\/code>\u91cc\u901a\u7528\u6982\u5ff5\uff0c\u5373\u72b6\u6001<\/code>\u3001\u4fee\u6539<\/code>\u3001\u6d3e\u751f<\/code>\u3001\u526f\u4f5c\u7528<\/code>\u90fd\u5b58\u5728\uff0c\u5927\u5bb6\u80fd\u5f88\u5feb\u4e0a\u624b\uff0c\u53ea\u662f\u7ec6\u8282\u5b9e\u73b0\u4e0d\u4e00\u6837\uff0c\u4f8b\u5982angular<\/code>\u8fd9\u91cc\u7684\u4fee\u6539\u57fa\u4e8eset<\/code>\u3001update<\/code>\uff0c\u83b7\u53d6\u901a\u8fc7get<\/code>\u51fd\u6570\u3002<\/p>\n
\u63a5\u4e0b\u6765\u6211\u4eec\u5c06\u53ea\u9488\u5bf9react<\/code>\u751f\u6001\u91cc\u7684signal<\/code>\u63ed\u793a\u53ef\u80fd\u5b58\u5728\u7684\u4f7f\u7528\u95ee\u9898\u3002<\/p>\n
\u4e0d\u77e5angular<\/code>\u3001svelte<\/code>\u3001solid<\/code>\u662f\u5426\u5b58\u5728\u5982\u4e0b\u95ee\u9898\uff0c\u6b22\u8fce\u9605\u8bfb\u672c\u6587\u7684\u8bfb\u8005\u63d0\u51fa\u5bf9\u5e94\u89c2\u70b9\u6216\u7ed9\u51fa\u793a\u4f8b\u3002<\/p><\/blockquote>\n
signal \u672c\u8d28<\/h2>\n
\u4e3a\u4f55\u524d\u7aef\u5bf9signal<\/code>\u5ff5\u5ff5\u4e0d\u5fd8\uff0c\u7a76\u5176\u539f\u56e0\u5c31\u662f\u5b83\u53ef\u8ba9\u89c6\u56fe\u7684\u6570\u636e\u4f9d\u8d56\u53ef\u9501\u5b9a\u5230\u6700\u5c0f\u8303\u56f4\uff0c\u4ee5\u4fbf\u5b9e\u73b0\u70b9\u5bf9\u70b9\u66f4\u65b0\uff0c\u5373dom\u7c92\u5ea6\u7684\u66f4\u65b0<\/p>\n
\"2.png\"<\/p>\n
\u65e2\u7136\u8981\u611f\u77e5\u5230\u89c6\u56fe\u7684\u6570\u636e\u4f9d\u8d56\uff0c\u90a3\u4e48\u5c31\u5b58\u5728\u4f9d\u8d56\u6536\u96c6\u524d\u7f6e\u884c\u4e3a\uff0c\u800c\u4e0d\u662f\u4f9d\u8d56\u6bd4\u8f83\u540e\u7f6e\u884c\u4e3a\u3002<\/p>\n
\"3.png\"<\/p>\n
\u4e0a\u56fe\u91cc\u7684\u6d45\u7070\u8272\u90e8\u5206\u7684compare deps<\/code>\u5373react.memo\u7684\u6bd4\u8f83\u51fd\u6570<\/p>\n
react.memo(Comp, ( prevProps, currProps )=> boolean)<\/code><\/pre>\n
\u767d\u8272\u90e8\u5206\u7684compare deps<\/code>\u5373\u73b0\u5728signal<\/code>\u91cc\u8bfb\u53d6\u884c\u4e3a\u4ea7\u751f\u7684\u503c\u6bd4\u8f83\uff08\u8bfb\u53d6\u884c\u4e3a\u8ba9\u6846\u67b6\u611f\u77e5\u5230\u4e86\u5f53\u524d\u89c6\u56fe\u7684\u4f9d\u8d56\uff0c\u4e0b\u4e00\u523b\u53ef\u4ee5\u7528\u6765\u505a\u6bd4\u8f83\uff09<\/p>\n
\/\/ \u7c7b\u4f3c solid \u7684\u8bbe\u8ba1\nconst [ val, setVal ] = createSignal(someVal);\n\n\/\/ \u89c6\u56fe\u8c03\u7528 val()\n<div>{val()}<\/div><\/code><\/pre>\n
\u6240\u4ee5\u6211\u4eec\u53ef\u5c06signal<\/code>\u770b\u505a\u662f\u4e00\u79cd\u652f\u6301\u4f9d\u8d56\u6536\u96c6\u7684\u5305\u88c5\u6570\u636e\uff0c\u6570\u636e\u7684\u8bfb\u4f9d\u8d56\u53ef\u4ee5\u548c\u5404\u79cd\u526f\u4f5c\u7528\u7ed1\u5b9a\u8d77\u6765\uff08\u4f8b\u5982render\u51fd\u6570\uff0c\u6d3e\u751f\u51fd\u6570\uff0c\u89c2\u5bdf\u51fd\u6570\u7b49\uff09\uff0c\u5199\u884c\u4e3a\u5219\u662f\u627e\u5230\u8fd9\u4e9b\u526f\u4f5c\u7528\u51fd\u6570\u518d\u53bb\u6267\u884c\u4e00\u904d\u3002<\/p>\n
\u54ce\u5582\uff1f\u8fd9\u4e0d\u5c31\u662fmobx<\/code>\u6216\u8005vue<\/code>\u4e00\u76f4\u90fd\u5728\u505a\u7684\u4e8b\u4e48\uff0c\u6362\u4e86\u4e2a\u540d\u8bcdsignal<\/code>\u518d\u6765\u4e00\u904d…..<\/p>\n
\"4.png\"<\/p>\n
react \u91cc\u7684 signal \u4e09\u65b9\u5b9e\u73b0<\/h2>\n
\u65e2\u7136signal<\/code>\u8fd9\u4e48\u7f8e\u597d\uff0c\u4e3a\u4ec0\u4e48react<\/code>\u4e0d\u539f\u751f\u652f\u6301\uff0c\u8fd9\u4e5f\u662f\u5f88\u591a\u4eba\u8d28\u95ee\u7684\u70b9\uff0creact<\/code>\u6838\u5fc3\u56e2\u961f\u7684 Andrew Clark\u5bf9\u6b64\u505a\u4e86\u7b54\u590d<\/p>\n
\u6211\u4eec\u53ef\u80fd\u4f1a\u5728 React \u4e2d\u6dfb\u52a0\u4e00\u4e2a\u7c7b\u4f3c Signals \u7684\u57fa\u5143\uff0c\u4f46\u6211\u5e76\u4e0d\u8ba4\u4e3a\u8fd9\u662f\u4e00\u4e2a\u7f16\u5199 UI \u4ee3\u7801\u7684\u597d\u65b9\u6cd5\u3002\u5b83\u5bf9\u6027\u80fd\u6765\u8bf4\u662f\u5f88\u597d\u7684\u3002\u4f46\u6211\u66f4\u559c\u6b22 React \u7684\u6a21\u5f0f\uff0c\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u4f60\u6bcf\u6b21\u90fd\u4f1a\u5047\u88c5\u91cd\u65b0\u521b\u5efa\u6240\u6709\u7684\u5185\u5bb9\u3002\u6211\u4eec\u7684\u8ba1\u5212\u662f\u4f7f\u7528\u4e00\u4e2a\u7f16\u8bd1\u5668\u6765\u5b9e\u73b0\u4e0e\u4e4b\u76f8\u5f53\u7684\u6027\u80fd<\/p><\/blockquote>\n
\u8fd9\u91cc\u9762\u8fd8\u5b58\u5728\u4e00\u4e2a\u95ee\u9898\u5c31\u662freact<\/code>\u5185\u90e8\u63a5\u53d7\u7684\u4e0d\u53ef\u53d8\u6570\u636e\uff0c\u4ee5\u4fbf\u505a\u9ad8\u6548\u7684diff<\/code>\u6bd4\u8f83\uff0c\u800csignal<\/code>\u5f3a\u8c03\u7684\u6570\u636e\u6570\u636e\u53ef\u53d8\uff0c\u4ee5\u4fbf\u7cbe\u786e\u77e5\u9053\u53d8\u5316\u7684\u7ec6\u8282\uff0c\u4f46\u5176\u5b9e\u8fd9\u4e0d\u662f\u963b\u788d\u5728react<\/code>\u91cc\u5b9e\u73b0signal<\/code>\u7684\u6838\u5fc3\u56e0\u7d20\uff0c\u56e0\u4e3a\u6211\u4eec\u53ea\u9700\u8981\u5728\u53ef\u53d8mutable<\/code>\u548c\u4e0d\u53ef\u53d8immutable<\/code>\u4e4b\u95f4\u642d\u4e00\u4e2a\u6865\u6881\uff0c\u57fa\u4e8emutable<\/code>\u5e93\u6539\u5199\u6570\u636e\uff0c\u751f\u6210\u5feb\u7167\u6570\u636e\u5582\u7ed9react<\/code>\u5c31\u89e3\u51b3\u6b64\u95ee\u9898\u4e86\u3002<\/p>\n
\"5.png\"<\/p>\n
\u4f46react<\/code>\u4fdd\u6301\u514b\u5236\u53ea\u505a\u81ea\u5df1\u6838\u5fc3\u7684\u90e8\u5206\uff0c\u662f\u793e\u533a\u751f\u6001\u5f3a\u5927\u7684\u91cd\u8981\u539f\u56e0\uff0c\u6240\u4ee5\u5f88\u591a\u4e09\u65b9\u5e93\u5f00\u59cb\u4e3areact\u5e26\u6765signal<\/code>\u4f53\u9a8c\uff0c\u8fd9\u91cc\u6211\u4eec\u91cd\u70b9\u5217\u4e3emobx-react<\/code>\u548c@preact\/signals-react<\/code>\u4e24\u4e2a\u5e93\uff0c\u6765\u770b\u770b\u4ed6\u4eec\u5b58\u5728\u7684\u95ee\u9898\u3002<\/p>\n
mobx-react<\/h3>\n
\u6ce8\u610f\uff0c\u5982\u679c\u4f60\u8ba4\u53ef\u4e0a\u9762\u603b\u7ed3\u7684signal<\/code>\u672c\u8d28\u7684\u8bdd\uff0cmobx-react<\/code>\u4e5f\u7b97\u662f\u4e00\u79cdsignal<\/code>\u7684\u5b9e\u73b0<\/p>\n
\u662f\u4e0d\u662f\u5f88\u610f\u5916\uff0c\u539f\u6765\u5f88\u65e9\u5f88\u65e9react\u751f\u6001\u91cc\u5c31\u6709\u4e86 signal \u5b9e\u73b0\uff0c\u53ea\u662f\u5f53\u65f6\u5927\u5bb6\u8fd8\u6ca1\u5439\u70ed signal \u8fd9\u4e2a\u6982\u5ff5\u3002<\/p><\/blockquote>\n
mobx-react<\/code>\u548c\u73b0\u6709signal<\/code>\u5e93\u7684\u5dee\u5f02\u70b9\u5728\u4e8e\uff0c\u5728\u51fd\u6570\u7ec4\u4ef6\u5927\u884c\u5176\u9053\u7684\u5f53\u4e0b\uff0c\u4efb\u7136\u9700\u8981\u663e\u5f0f\u5730\u7a81\u51fa\u89c2\u5bdf\u8282\u70b9\uff0c\u5373\u5305\u88c5\u666e\u901a\u7ec4\u4ef6\u4e3a\u53ef\u89c2\u5bdf\u7ec4\u4ef6\uff0c\u518d\u914d\u5408\u94a9\u5b50\u51fd\u6570\u624d\u80fd\u611f\u77e5\u53d8\u5316<\/p>\n
import { makeAutoObservable } from "mobx"\nimport { observer, useObservable } from "mobx-react-lite"\n\n\/\/ \u5b9a\u4e49 store\nclass Store {\n  count = 0\n\n  constructor() {\n    makeAutoObservable(this);\n  }\n  \n  add(){\n    this.count += 1\n  },\n}\n\n\/\/ \u5b9e\u4f8b\u5316 store\nconst mySotre = new Store();\n\nconst App = observer(() => {\n  \/\/ \u4f7f\u7528 store\n  const store = useObservable(mySotre);\n  return <button onClick={() => ++store.count}>{store.count}<\/button>\n});\n<\/code><\/pre>\n
\u793a\u4f8b\u53c2\u8003\u81eamobx\u5b98\u7f51react\u96c6\u6210<\/a><\/p><\/blockquote>\n
\u8fd9\u79cd\u4f7f\u7528\u4f53\u9a8c\u843d\u540e\u4e8e\u5176\u4ed6\u4e0d\u9700\u8981\u663e\u5f0f\u7a81\u51fa\u89c2\u5bdf\uff0capi\u5b8c\u5168\u8d70\u51fd\u6570\u5f0f\u98ce\u683c\u7684signal<\/code>\u5b9e\u73b0\u5e93\u3002<\/p>\n
preact\/signals-react<\/h3>\n
preact \u81ea\u8eab\u5b9e\u73b0\u4e86 signal<\/code>\u540e\uff0c\u4e5f\u53d1\u5e03\u4e86 @preact\/signals-react<\/code> \u5305\u6765\u4e3areact<\/code>\u5e26\u6765signal<\/code>\u80fd\u529b\uff0c\u4f46\u662f\u5f53\u6211\u8ba4\u771f\u4f53\u9a8c\u540e\uff0c\u552f\u4e00\u7684\u611f\u53d7\u662f\uff1a\u8fd9\u53ef\u80fd\u53ea\u9002\u5408\u5199hello world<\/code>…..<\/p>\n
\"6.png\"<\/p>\n
\u6211\u4eec\u6309\u7167\u5b98\u7f51demo\u5199\u51fa\u6765\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
import { signal, computed } from "@preact\/signals-react";\n\n\/\/ \u5b9a\u4e49 signal\nconst count = signal(0);\n\/\/ \u6d3e\u751f signal\nconst comput = computed(() => count.value * 5);\n\/\/ \u4fee\u6539 signal\nconst increment = () => {\n  count.value++;\n};\n\nexport default function App() {\n  return (\n    <div className="App">\n      <h1>Count -> {count}<\/h1>\n      <h1>Commp -> {comput}<\/h1>\n      <button onClick={increment}>Increment<\/button>\n    <\/div>\n  );\n}<\/code><\/pre>\n
\u8dd1\u8d77\u6765\u7684\u786e\u6ca1\u95ee\u9898\uff0c\u4f46\u662f\u6211\u4eec\u7684\u5b9e\u9645\u5f00\u53d1\u9879\u76ee\u4e0d\u53ef\u80fd\u662fcount<\/code>\u8fd9\u79cd\u7b80\u5355\u7ed3\u6784\u6570\u636e\uff0c\u4ee5\u53ca\u52a0\u548c\u51cf\u8fd9\u79cd\u903b\u8f91\u3002<\/p>\n
\"7.gif\"<\/p>\n
\u57511\uff1a\u6ca1\u6709\u53ef\u53d8\u4fee\u6539<\/h3>\n
\u6211\u7a0d\u5fae\u628a\u6570\u636e\u8c03\u590d\u6742\u4e00\u70b9\uff0c\u4ee3\u7801\u53d8\u4e3a\u5982\u4e0b\uff1a<\/p>\n
const user = signal({a:{b:1}, name: 'test'});\nconst comput = computed(() => user.v.a.b + 1);\n\nconst increment = () => {\n    user.value.a.b++;\n};<\/code><\/pre>\n
\u8fd9\u6837\u7684\u4ee3\u7801\u5c31\u4e0d\u80fd\u6b63\u5e38\u9a71\u52a8\u89c6\u56fe\u91cd\u65b0\u6e32\u67d3\uff0c\u6240\u4ee5\u6211\u5fc5\u987b\u6539\u4e3a<\/p>\n
user.value.a.b++;\n+ user.value = { ...user.value };<\/code><\/pre>\n
\u57512: \u6e32\u67d3\u7c92\u5ea6\u662f\u4fe1\u53f7\u672c\u8eab<\/h3>\n
signals-react<\/code>\u7684\u6e32\u67d3\u7c92\u5ea6\u662f\u4fe1\u53f7\u672c\u8eab\uff0c\u5373\u4fe1\u53f7\u81ea\u8eab\u6539\u53d8\u540e\uff0c\u4efb\u4f55\u5f15\u7528\u4fe1\u53f7\u7684\u7ec4\u4ef6\u90fd\u4f1a\u88ab\u91cd\u5199\u6e32\u67d3\uff0c\u5bf9\u4e8e\u590d\u6742\u5bf9\u8c61\u4e5f\u662f\u4e00\u6837\u7684\u7ed3\u679c\uff0c\u5c31\u5bfc\u81f4\u53ef\u80fd\u53ea\u6539\u4e86\u5bf9\u8c61\u7684\u90e8\u5206\u6570\u636e\u8282\u70b9A\uff0c\u800c\u53ea\u4f7f\u7528\u4e86\u90e8\u5206\u6570\u636e\u8282\u70b9B\u7684\u7ec4\u4ef6\u4e5f\u4f1a\u88ab\u91cd\u6e32\u67d3\u3002<\/p>\n
\u4ee3\u7801\u5982\u4e0b\uff0c\u6bcf\u4e2a\u7ec4\u4ef6\u53ef\u4ee5\u5305\u542b\u4e86\u4e00\u4e2a <h3>{Date.now()}<\/h3><\/code>\uff0c\u5982\u679c\u53d8\u5316\u4e86\u8868\u793a\u5f53\u524d\u7ec4\u4ef6\u88ab\u89e6\u53d1\u91cd\u6e32\u67d3\u4e86<\/p>\n
\u793a\u4f8b\u4ee3\u7801\u89c1App3.tsx<\/a>\u6587\u4ef6<\/p><\/blockquote>\n
import { signal } from "@preact\/signals-react";\n\nconst person = signal({\n  firstName: "John",\n  lastName: "Doe",\n});\n\nfunction FirstName() {\n  return (\n    <div>\n      <h1>firstName: {person.value.firstName}<\/h1>\n      <h3>{Date.now()}<\/h3>\n    <\/div>\n  );\n}\n\nfunction LastName() {\n  return (\n    <div>\n      <h1>lastName: {person.value.lastName}<\/h1>\n      <h3>{Date.now()}<\/h3>\n    <\/div>\n  );\n}\n\nconst change = (e) => {\n  person.value.firstName = e.target.value;\n  person.value = { ...person.value };\n};\n\nexport default function App() {\n  return (\n    <div className="App">\n      <FirstName \/>\n      <LastName \/>\n      <input onInput={change} \/>\n    <\/div>\n  );\n}<\/code><\/pre>\n
\u8f93\u5165input\uff0c\u6e32\u67d3\u7ed3\u679c\u5982\u4e0b\uff0c\u6211\u4eec\u53ea\u4fee\u6539\u4e86firstName<\/code>\uff0c\u7ed3\u679cFirstName<\/code>\u548cLastName<\/code>\u7ec4\u4ef6\u5747\u89e6\u53d1\u91cd\u6e32\u67d3<\/p>\n
\"8.gif\"<\/p>\n
\u57513: \u7cdf\u7cd5\u7684\u7ec6\u7c92\u5ea6\u66f4\u65b0\u5f00\u53d1\u4f53\u9a8c<\/h3>\n
\u53ef\u662f\u5b98\u7f51\u660e\u660e\u5ba3\u79f0\u652f\u6301\u7ec6\u7c92\u5ea6\u66f4\u65b0\u7684\u554a\uff0c\u4e3a\u4ec0\u4e48\u57512<\/strong>\u7684\u793a\u4f8b\u89e6\u53d1\u4e86\u5168\u90e8\u4f7f\u7528\u65b9\u6e32\u67d3\u5462\uff0c\u7ecf\u8fc7\u4ed4\u7ec6\u9605\u8bfb\u5b98\u7f51\uff0c\u53d1\u73b0\u4e0a\u8ff0\u4f8b\u5b50\u6539\u4e3a\u771f\u6b63\u7684\u7ec6\u7c92\u5ea6\u6e32\u67d3\u8fd8\u9700\u8981\u8fdb\u4e00\u6b65\u62c6\u5206signal<\/code>\uff0c\u6240\u4ee5\u4ee3\u7801\u9700\u8981\u4f18\u5316\u4e3asignal<\/code>\u5957signal<\/code>\u7684\u6a21\u5f0f<\/p>\n
\/\/ signal \u5b9a\u4e49\nconst person = signal({\n++  firstName: "John",\n--  firstName: signal("John"),\n++  lastName: "Doe",\n--  lastName: signal("Doe"),\n});\n\n\/\/ \u4fee\u6539\u65b9\u5f0f\n-- const change = (e) => {\n--  person.value.firstName = e.target.value;\n--  person.value = { ...person.value };\n--};\n++ const change = (e) => {\n++  person.value.firstName.value = e.target.value;\n++};\n\n\/\/ \u7ec4\u4ef6\u4f7f\u7528\n-- <p>{person.value.firstName}<\/p>\n++ <p>{person.value.firstName.value}<\/p><\/code><\/pre>\n
\u5199\u5b8c\u8fd9\u6837\u4e00\u6bb5\u4ee3\u7801\u540e\uff0c\u6211\u7684\u5185\u5fc3\u611f\u53d7\u662f\u8fd9\u6837\u7684<\/p>\n
\"9.gif\"<\/p>\n
\u5982\u679c\u6211\u4eec\u771f\u7684\u5728\u9879\u76ee\u94fa\u5f00\u6765\u8fd9\u6837\u4f7f\u7528signal<\/code>\u7684\u8bdd\uff0c\u5c06\u9677\u5165signal<\/code>\u62c6\u5206\u7684\u6d77\u6d0b\u91cc\uff0c\u4ee5\u53ca\u6f2b\u5929.value<\/code>\u7684\u66b4\u96e8\u4e2d….<\/p>\n
helux \u5e26\u4f60\u8fdb\u5165\u771f\u6b63\u7684signal\u4e16\u754c<\/h2>\n
helux<\/code>\u5f15\u5165signal<\/code>\u8bbe\u8ba1\u65f6\uff0c\u660e\u786e\u4e86\u8981\u5b8c\u6210\u4ee5\u4e0b\u51e0\u4e2a\u76ee\u6807\uff0c\u624d\u80fd\u8ba9signal<\/code>\u5728react<\/code>\u771f\u6b63\u53ef\u7528\u3001\u597d\u7528\u3002<\/p>\n
\u7eaf\u7cb9\u7684\u51fd\u6570\u5f0f<\/h3>\n
\u76f8\u6bd4mobx-react<\/code>\u4f7f\u7528class<\/code>\u521b\u5efa store\uff0chelux<\/code>\u5f7b\u5e95\u62e5\u62b1\u51fd\u6570\u5f0f\uff0c\u6709\u66f4\u5f3a\u7684\u53ef\u7ec4\u5408\u6027<\/p>\n
import { atom, share, derive, watch, watchEffect } from 'helux';\n\n\/\/ primitive atom\nconst [ numAtom, setNum ] = atom(1);\nconst result = derive(()=> numAtom.val + 1); \/\/ { val: 2 }\nwatch(()=> console.log(`numAtom changed`), ()=>[numAtom]);\n\/\/ or\nwatchEffect(()=> console.log(`numAtom changed ${numAtom.val}`))\nsetNum(100); \/\/ \u9a71\u52a8 derive watch watchEffect\n\n\/\/ object atom\nconst [ state, setState ] = share({a:1, b:2});\nconst result = derive(()=> state.a + 1);\nwatch(()=> console.log(`state.a changed`), ()=>[state.a]);\n\/\/ or\nwatchEffect(()=> console.log(`state.a ${state.a}`))\nsetState(draft=>{draft.a=100}); \/\/ \u9a71\u52a8 derive watch watchEffect<\/code><\/pre>\n
\u8db3\u591f\u7b80\u5355\u7684api<\/h3>\n
\u7ec4\u4ef6\u91cc\u4f7f\u7528 observer<\/code> \u914d\u5408 useObservable<\/code> \u624d\u80fd\u9a71\u52a8\u51fd\u6570\u7ec4\u4ef6\uff0c\u53ea\u9700\u8981useAtom<\/code>\u5373\u53ef<\/p>\n
function Demo1() {\n  cosnt [ num ] = useAtom(numAtom); \/\/ \u81ea\u52a8\u62c6\u7bb1 { val: T }\n  \/\/ or useAtom(state);\n  return (\n    <div>{num}<\/div>\n  );\n}\n\nfunction Demo2() {\n  const [ state ] = useAtom(state);\n  return (\n    <div>{state.a}<\/div>\n  );\n}<\/code><\/pre>\n
\u4f9d\u8d56\u662f\u7ec6\u7c92\u5ea6\u7684\uff0c\u5bf9\u8c61\u9010\u6b65\u5c55\u5f00\u4f9d\u8d56\u5c31\u4f1a\u9010\u6b65\u7f29\u5c0f<\/p>\n
\/\/ \u4f9d\u8d56\u4ec5\u4ec5\u662f state.a\uff0c\u53ea\u6709 state.a \u53d8\u5316\u624d\u4f1a\u5f15\u8d77\u91cd\u6e32\u67d3\n<div>{state.a}<\/div>\n<\/code><\/pre>\n
\u5982\u679c\u4e0d\u9700\u8981\u9a71\u52a8\u8fd9\u4e2a\u7ec4\u4ef6\u91cd\u65b0\u6e32\u67d3\uff0c\u53ea\u9700\u8981\u4f7f\u7528$<\/code>\u7b26\u53f7\u5305\u62ec\u5373\u53ef\uff0c\u6b64\u65f6\u7ec4\u4ef6\u90fd\u4e0d\u9700\u8981useAtom<\/code>\uff0c\u5b9e\u73b0 0 hook \u7f16\u7801\u3002<\/p>\n
import { $ } from 'helux';\n\nfunction Demo(){\n  \/\/ \u4ec5div\u5185\u90e8\u8fd9\u4e00\u5c0f\u5757\u533a\u57df\u4f1a\u91cd\u6e32\u67d3\n  <div>{$(state.a)}<\/div>\n}\n<\/code><\/pre>\n
\u6ca1\u6709\u4efb\u4f55\u5fc3\u667a\u8d1f\u62c5\u7684\u4f7f\u7528\u4fe1\u53f7\u5bf9\u8c61<\/h3>\n
\u6211\u4eec\u53ef\u4ee5\u628a\u5bf9\u8c61\u6784\u5efa\u5f97\u8db3\u591f\u590d\u6742\uff0c\u4e5f\u53ef\u4ee5\u50cf\u4f7f\u7528\u539f\u751fjson\u5bf9\u8c61\u4f7f\u7528\u4fe1\u53f7\u5bf9\u8c61\uff0c\u4e0d\u9700\u8981signal<\/code>\u53e0signal<\/code>\u7684\u8be1\u5f02\u64cd\u4f5c\u3002<\/p>\n
atom(()=>({\n    a:1,\n    b: {  .... }\n    c : { e: { list: [ ... ] } }\n}));<\/code><\/pre>\n
\u5f3a\u608d\u7684\u4f9d\u8d56\u8ffd\u8e2a\u6027\u80fd<\/h3>\n
\u57fa\u4e8elimu<\/a>\u7684\u5f3a\u608d\u6027\u80fd\uff0c\u53ef\u4ee5\u65e0\u6240\u754f\u60e7\u7684\u8ddf\u8e2a\u5230\u4efb\u610f\u6df1\u5ea6\u8282\u70b9\u7684\u4f9d\u8d56\uff0chelux<\/code>\u9ed8\u8ba4\u5bf9\u6570\u7ec4\u53ea\u8ddf\u8e2a\u5230\u4e0b\u6807\u4f4d\u7f6e\uff0c\u4e0b\u6807\u91cc\u7684\u5bf9\u8c61\u5c5e\u6027\u7ee7\u7eed\u5c55\u5f00\u540e\u7684\u4f9d\u8d56\u5c31\u4e0d\u518d\u6536\u96c6\uff0c\u907f\u514d\u8d85\u5927\u6570\u7ec4\u4ea7\u751f\u8fc7\u591a\u7684\u8ddf\u8e2a\uff0c\u4f46\u5982\u679c\u4f60\u613f\u610f\u82b1\u8d39\u989d\u5916\u7684\u5185\u5b58\u7a7a\u95f4\u6536\u96c6\u6240\u6709\u5b50\u8282\u70b9\u4f9d\u8d56\uff0c\u8c03\u6574\u6536\u96c6\u7b56\u7565\u5373\u53ef\u5b8c\u6210\u3002<\/p>\n
\u4f8b\u5982\u4e0b\u9762\u8fd9\u4e2a\u4f8b\u5b50\u91cc\uff0c\u4fee\u6539\u6570\u7ec4\u4efb\u610f\u4e00\u4e2a\u5b50\u8282\u70b9\u7684\u67d0\u4e2a\u5b50\u5c5e\u6027\uff0c\u53ea\u4f1a\u89e6\u53d1\u76ee\u6807\u8282\u70b9\u66f4\u65b0\uff0c\u751a\u81f3\u6211\u4eec\u5b8c\u5168\u514b\u9686\u4e86\u4e00\u4efd\u65b0\u7684set\u56de\u53bb\u4e5f\u6ca1\u6709\u89e6\u53d1\u66f4\u65b0\uff0c\u56e0\u4e3ahelux<\/code>\u5185\u90e8\u5728\u6bd4\u8f83\u65b0\u503c\u548c\u4e0a\u4e00\u523b\u7684\u5feb\u7167\u662f\u5426\u76f8\u7b49\uff0c\u76f8\u7b49\u5219\u8df3\u8fc7\u66f4\u65b0\u3002<\/p>\n
\u793a\u4f8b\u89c1list\u4f9d\u8d56<\/a>\uff0c\u672c\u94fe\u63a5\u91cc\u8fd8\u5305\u542b\u4e86\u5176\u4ed6\u7b80\u5355\u793a\u4f8b<\/p><\/blockquote>\n
import React from "react";\nimport { sharex } from "helux";\nimport { MarkUpdate, Entry } from ".\/comps";\n\nconst stateFn = () => ({\n  list: [\n    { name: "one1", age: 1 },\n    { name: "one2", age: 2 },\n    { name: "one3", age: 3 },\n  ],\n});\n\/\/ stopArrDep=false\uff0c\u652f\u6301\u6570\u7ec4\u5b50\u9879\u4f9d\u8d56\u6536\u96c6\nconst { useState, reactive } = sharex(stateFn, { stopArrDep: false });\n\n\/\/ \u66f4\u65b0\u5176\u4e2d\u4e00\u4e2a\u5b50\u9879\uff0c\u89e6\u53d1\u66f4\u65b0\nfunction updateListItem() {\n  reactive.list[1].name = `${Date.now()}`;\n}\n\n\/\/ \u65b0\u514b\u9686\u4e00\u4e2a\u66f4\u65b0\u56de\u53bb\uff0c\u4e0d\u89e6\u53d1\u66f4\u65b0\uff0c\u56e0\u4e3a\u5177\u4f53\u503c\u6ca1\u53d8\nfunction updateAllListItem() {\n  reactive.list = JSON.parse(JSON.stringify(reactive.list));\n}\n\n\/\/ \u65b0\u514b\u9686\u4e00\u4e2a\u5e76\u4fee\u6539\u5176\u4e2d\u4e00\u4e2a\uff0c\u4ec5\u89e6\u53d1list[0]\u66f4\u65b0\nfunction updateAllListItemAndChangeOne() {\n  const list = JSON.parse(JSON.stringify(reactive.list));\n  list[1].name = `${Date.now()}`;\n  reactive.list = list;\n}\n\nconst ListItem = React.memo(\n  function (props: any) {\n    \/\/ arrDep = false \u6570\u7ec4\u81ea\u8eab\u4f9d\u8d56\u5ffd\u7565\n    const [state, , info] = useState({ arrDep: false });\n    return (\n      <MarkUpdate info={info}>name: {state.list[props.idx].name}<\/MarkUpdate>\n    );\n  },\n  () => true\n);\n\nfunction List() {\n  const [state] = useState();\n  return (\n    <div>\n      {state.list.map((item, idx) => (\n        <ListItem key={idx} idx={idx} \/>\n      ))}\n    <\/div>\n  );<\/code><\/pre>\n
\u66f4\u65b0\u6548\u679c\u5982\u4e0b\uff0c\u53ef\u89c2\u5bdf\u8272\u5757\u7684\u53d8\u5316\u786e\u5b9a\u662f\u5426\u88ab\u66f4\u65b0<\/p>\n
\"10.gif\"<\/p>\n
\u7ed3\u8bed<\/h2>\n
\u5176\u4ed6\u6846\u67b6\u7684signal<\/code>\u4f53\u9a8c\u6548\u679c\u6682\u65e0\u9a8c\u8bc1\uff0c\u672c\u6587\u53ea\u9488\u5bf9react<\/code>\u751f\u6001\u4e2d\u7684signal\u76f8\u5173\u4f5c\u54c1\u505a\u5bf9\u6bd4\uff0chelux<\/code>\u5904\u5904\u672a\u4f53\u73b0signal<\/code>\uff0c\u4f46\u5f53\u4f60\u4f7f\u7528atom<\/code>\u521b\u5efa\u51fa\u6765\u5171\u4eab\u8f6c\u6001\u65f6\uff0c\u5904\u5904\u90fd\u5728\u6536\u96c6\u8bfb\u53d6\u884c\u4e3a\u4ea7\u751f\u7684\u4fe1\u53f7\uff08derive<\/code>\uff0cwatch<\/code>\uff0cuseAtom<\/code>\uff09, \u8fd9\u4e9b\u90fd\u662f\u5185\u7f6e\u7684\uff0c\u4f60\u53ea\u7ba1\u50cf\u64cd\u4f5c\u666e\u901ajson\u4e00\u6837\u64cd\u4f5c\u643a\u5e26\u4fe1\u53f7\u529f\u80fd\u7684atom<\/code>\u5171\u4eab\u72b6\u6001\u5373\u53ef\uff0c\u8fd9\u6216\u8bb8\u624d\u662f\u6211\u4eec\u518dreact<\/code>\u4e16\u754c\u91cc\u9700\u8981\u7684\u9762\u5411\u5f00\u53d1\u8005\u7f16\u7801\u53cb\u597d\uff0c\u9762\u5411\u7528\u6237\u8fd0\u884c\u9ad8\u6548\u7684signal<\/code>\u5b9e\u73b0\u3002<\/p>\n
\u53cb\u94fe\uff1a<\/h3>\n
\u2764\ufe0f \u4f60\u7684\u5c0f\u661f\u661f\u662f\u6211\u4eec\u5f00\u6e90\u6700\u5927\u7684\u7cbe\u795e\u52a8\u529b\uff0c\u6b22\u8fce\u5173\u6ce8\u4ee5\u4e0b\u9879\u76ee\uff1a<\/p>\n
helux<\/a> \u96c6atom\u3001signal\u3001\u4f9d\u8d56\u8ffd\u8e2a\u4e3a\u4e00\u4f53\uff0c\u652f\u6301\u7ec6\u7c92\u5ea6\u54cd\u5e94\u66f4\u65b0\u7684\u72b6\u6001\u5f15\u64ce<\/p>\n
limu<\/a> \u6700\u5feb\u7684\u4e0d\u53ef\u53d8\u6570\u636ejs\u64cd\u4f5c\u5e93.<\/p>\n
hel-micro<\/a> \u5de5\u5177\u94fe\u65e0\u5173\u7684\u8fd0\u884c\u65f6\u6a21\u5757\u8054\u90a6sdk.<\/p>\n
\ud83d\udce6 \u4e86\u89e3\u66f4\u591a<\/h3>\n
\u6b22\u8fce\u5165\u7fa4\u4e86\u89e3\u66f4\u591a\uff0c\u7531\u4e8e\u5fae\u4fe1\u8ba8\u8bba\u7fa4\u53f7 200 \u4eba\u5df2\u6ee1\uff0c\u9700\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\u6216 qq \u7fa4\u53f7\uff0c\u518d\u9080\u8bf7\u4f60\u5982helux & hel<\/code>\u8ba8\u8bba\u7fa4\uff08\u52a0\u53f7\u65f6\u8bb0\u5f97\u5907\u6ce8 helux \u6216 hel\uff09<\/p>\n
\"helux_and_hel.png\"<\/p>\n
https:\/\/segmentfault.com\/a\/1190000044641870<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
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