{"id":38976,"date":"2024-01-09T06:50:59","date_gmt":"2023-11-21T15:06:12","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/angular-2%e5%85%a5%e9%97%a8%ef%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ngmodel%e9%80%82%e7%94%a8%e4%ba%8erc-5%e7%89%88%e6%9c%ac\/"},"modified":"2024-05-04T17:28:23","modified_gmt":"2024-05-04T09:28:23","slug":"angular-2%e5%85%a5%e9%97%a8%ef%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ngmodel%e9%80%82%e7%94%a8%e4%ba%8erc-5%e7%89%88%e6%9c%ac","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/angular-2%e5%85%a5%e9%97%a8%ef%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8ngmodel%e9%80%82%e7%94%a8%e4%ba%8erc-5%e7%89%88%e6%9c%ac\/","title":{"rendered":"Angular 2\u5165\u95e8\uff1a\u5c1d\u8bd5\u4f7f\u7528NgModel[\u9002\u7528\u4e8erc.5\u7248\u672c]"},"content":{"rendered":"<p>\u4f60\u597d\u3002\u6211\u662f\u4eca\u4e95\u3002<br \/>\n\u542c\u8bf4Angular2\u5373\u5c06\u7a33\u5b9a\u4e0b\u6765\uff0c\u6211\u6253\u7b97\u8bd5\u8bd5\u770b\u3002<\/p>\n<p>\u5f53\u6211\u7b2c\u4e00\u6b21\u63a5\u89e6Angular JS\u65f6\uff0c\u6700\u4ee4\u6211\u5370\u8c61\u6df1\u523b\u7684\u662f\u5b83\u7684\u53cc\u5411\u7ed1\u5b9a\u529f\u80fd\u3002\u6211\u5f88\u60f3\u770b\u770b\u5728Angular 2\u4e2d\u8fd9\u4e2a\u53cc\u5411\u7ed1\u5b9a\u662f\u5982\u4f55\u6539\u53d8\u7684\u3002<\/p>\n<hr \/>\n<h1>\u524d\u63d0 (Qian2 ti2)<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">AngularJS\u306b\u89e6\u308c\u305f\u3053\u3068\u304c\u3042\u308b\u65b9\u3092\u5bfe\u8c61\u3068\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u624b\u9806\u3092\u7701\u304f\u305f\u3081\u3001@armorik83 \u6c0f\u306enpm i\u3057\u3066Angular 2\u306eHello World!\u3092\u66f8\u304f\u3068\u3053\u308d\u307e\u3067\u3092\u8aad\u307e\u308c\u305f\u524d\u63d0\u3067\u8a71\u3092\u9032\u3081\u3066\u3044\u304d\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5bfe\u8c61\u306eAngular2\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f2.0.0-rc.5\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Angular 1.x\u3092Angular JS\u3002Angular 2.x\u3092Angular 2\u3068\u547c\u79f0\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u516c\u5f0f\u30b5\u30a4\u30c8: https:\/\/angular.io\/<\/ul>\n<h1>\u51c6\u5907\u597d<\/h1>\n<p>\u57fa\u672c\u7684\u73af\u5883\u548c\u914d\u7f6e\u4e0e\u201cnpm i\u7136\u540e\u7f16\u5199Angular 2\u7684Hello World!\u201d\u76f8\u540c\uff0c\u4f46\u4e3a\u4e86\u4f7f\u7528NgModel\uff0c\u9700\u8981\u52a0\u8f7dFormsModule\u3002\u7531\u4e8eFormsModule\u4f4d\u4e8e@angular\/forms\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528npm\u5f15\u5165\u5b83\u3002<\/p>\n<pre class=\"post-pre\"><code>npm i --save @angular\/forms\r\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u5728app.module.ts\u4e2d\u6dfb\u52a0FormsModule\u6a21\u5757\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">NgModule<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/core<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">BrowserModule<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/platform-browser<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">AppComponent<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">.\/app.component<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">FormsModule<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/forms<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ \u8ffd\u52a0<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">NgModule<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">imports<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span>\r\n    <span class=\"nx\">BrowserModule<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"nx\">FormsModule<\/span> <span class=\"c1\">\/\/ \u8ffd\u52a0<\/span>\r\n  <span class=\"p\">],<\/span>\r\n  <span class=\"na\">declarations<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"nx\">AppComponent<\/span><span class=\"p\">],<\/span>\r\n  <span class=\"na\">bootstrap<\/span><span class=\"p\">:<\/span> <span class=\"p\">[<\/span><span class=\"nx\">AppComponent<\/span><span class=\"p\">]<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppModule<\/span> <span class=\"p\">{}<\/span>\r\n<\/code><\/pre>\n<h1>\u4ece\u6a21\u578b\u5230\u89c6\u56fe<\/h1>\n<p>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4eceMVC\u6a21\u578b\u4e2d\u7684\u6a21\u578b\u53cd\u6620\u503c\u5230\u89c6\u56fe\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ Component\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u3001`@angular\/core`\u304b\u3089`Component`\u3092import\u3057\u3066\u307e\u3059\u3002<\/span>\r\n<span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">Component<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/core<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ `@Component`\u3068\u3044\u3046\u898b\u6163\u308c\u306a\u3044\u66f8\u304d\u65b9\u3092\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306fTypescript\u304c\u63a1\u7528\u3057\u3066\u3044\u308bDecorator\u69cb\u6587\u3067\u3059\u3002<\/span>\r\n<span class=\"c1\">\/\/ \u4eca\u3067\u306fES7\u306e\u4ed5\u69d8\u3068\u3057\u3066\u3082\u691c\u8a0e\u3055\u308c\u3066\u3044\u307e\u3059\u3002(20160818\u6642\u70b9\u3067stage2)<\/span>\r\n<span class=\"c1\">\/\/ \u3053\u306eDecoartor\u69cb\u6587\u306b\u3088\u308a\u3001`AppComponent`\u30af\u30e9\u30b9\u306b`selector`\u3001`template`\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span>\r\n<span class=\"p\">@<\/span><span class=\"nd\">Component<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">my-app<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">template<\/span><span class=\"p\">:<\/span> <span class=\"s2\">`\r\n    &lt;h1&gt;{{title}}&lt;\/h1&gt;\r\n    &lt;input type='text' [value]=\"title\"&gt;\r\n  `<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppComponent<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">title<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Hello World<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5c06[value]=&#8221;title&#8221;\u6dfb\u52a0\u5230\u7ec4\u4ef6\u7c7b AppComponent \u4e2d\u58f0\u660e\u7684 title=&#8221;HelloWorld&#8221;\uff0c\u53ef\u4ee5\u5c06\u5176\u53cd\u6620\u5230 input \u5143\u7d20\u7684 value \u5c5e\u6027\u4e2d\u3002\u53ef\u4ee5\u4f7f\u7528[target]=&#8221;expression&#8221;\u3001bind-target=&#8221;expression&#8221;\u6216target={{expression}}\u8fd9\u6837\u7684\u8bed\u6cd5\u5c06\u4efb\u610f\u7684\u5c5e\u6027\u3001\u5c5e\u6027\u3001\u6837\u5f0f\u548c\u7c7b\u4e0e\u503c\u8fdb\u884c\u7ed1\u5b9a\u3002[&#8230;] \u8fd9\u79cd\u8868\u793a\u6cd5\u8868\u793a\u8f93\u5165\u5c5e\u6027\u3002<\/p>\n<h1>\u4ece\u89c6\u56fe\u5230\u6a21\u578b\u3002<\/h1>\n<p>\u6211\u5c06\u5c1d\u8bd5\u4eceMVC\u6a21\u578b\u4e2d\u7684\u89c6\u56fe\u5c06\u503c\u53cd\u6620\u5230\u6a21\u578b\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">Component<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/core<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Component<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">my-app<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">template<\/span><span class=\"p\">:<\/span> <span class=\"s2\">`\r\n    &lt;h1&gt;{{title}}&lt;\/h1&gt;\r\n    &lt;input type='text' (input)=\"title=$event.target.value\"&gt;\r\n  `<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppComponent<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">title<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\uff08\u8f93\u5165\uff09=\u201ctitle = $ event.target.value\u201d\u662f\u7528\u6765\u63cf\u8ff0\u7684\uff0c\u5f53\u7528\u6237\u8f93\u5165\u89e6\u53d1\u8f93\u5165\u4e8b\u4ef6\u65f6\uff0c\u5c06<input type=\"text\" \/>\u7684\u503c\u53cd\u6620\u5230title\u4e2d\u3002\u53ef\u4ee5\u4f7f\u7528(event name)=&#8221;expression&#8221;\u6216on-event name=&#8221;expression&#8221;\u7684\u8bed\u6cd5\u6765\u7ed1\u5b9a\u4e8b\u4ef6\u3002(&#8230;)\u8868\u793a\u8f93\u51fa\u5c5e\u6027\u3002<\/p>\n<h1>\u53cc\u5411\u7ed1\u5b9a\uff08\u4ece\u6a21\u578b\u5230\u89c6\u56fe\uff0c\u4ece\u89c6\u56fe\u5230\u6a21\u578b\uff09<\/h1>\n<p>\u8fd9\u4e00\u6b21\uff0c\u6211\u4eec\u5c06\u5c1d\u8bd5\u5b9e\u73b0\u4ece\u6a21\u578b\u5230\u89c6\u56fe\uff0c\u4ece\u89c6\u56fe\u5230\u6a21\u578b\u7684\u8f6c\u6362\u3002<\/p>\n<h2>\u6709\u4e9b\u590d\u6742\u7684\u5199\u6cd5 de<\/h2>\n<pre class=\"post-pre\"><code><span class=\"k\">import<\/span> <span class=\"p\">{<\/span><span class=\"nx\">Component<\/span><span class=\"p\">}<\/span> <span class=\"k\">from<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">@angular\/core<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"p\">@<\/span><span class=\"nd\">Component<\/span><span class=\"p\">({<\/span>\r\n  <span class=\"na\">selector<\/span><span class=\"p\">:<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">my-app<\/span><span class=\"dl\">\"<\/span><span class=\"p\">,<\/span>\r\n  <span class=\"na\">template<\/span><span class=\"p\">:<\/span> <span class=\"s2\">`\r\n    &lt;h1&gt;{{title}}&lt;\/h1&gt;\r\n    &lt;input type='text' [value]=\"title\" (input)=\"title=$event.target.value\"&gt;\r\n  `<\/span>\r\n<span class=\"p\">})<\/span>\r\n<span class=\"k\">export<\/span> <span class=\"kd\">class<\/span> <span class=\"nx\">AppComponent<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"nl\">title<\/span><span class=\"p\">:<\/span> <span class=\"kr\">string<\/span> <span class=\"o\">=<\/span> <span class=\"dl\">\"<\/span><span class=\"s2\">Hello World<\/span><span class=\"dl\">\"<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u60f3\u8981\u5b9e\u73b0\u53cc\u5411\u7ed1\u5b9a\uff0c\u53ea\u9700\u76f4\u63a5\u5199[value]\uff08\u8f93\u5165\uff09\u5c31\u53ef\u4ee5\u4e86\u3002\u4f46\u662f\uff0c\u8fd9\u6837\u5199\u6709\u70b9\u9ebb\u70e6\u3002\u5728Angular JS\u4e2d\uff0c\u6211\u60f3\u4f60\u53ef\u80fd\u4f7f\u7528\u4e86ng-model\u8fd9\u4e2a\u6307\u4ee4\uff0c\u800c\u5728Angular 2\u4e2d\uff0c\u5b58\u5728\u7740\u4e00\u4e2a\u540d\u4e3aNgModel\u7684\u6307\u4ee4\u3002\u4f7f\u7528\u5b83\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u7b80\u6d01\u5730\u7f16\u5199\u3002<\/p>\n<h2>\u7b80\u4fbf\u7684\u5199\u6cd5<\/h2>\n<p>\u597d\u7684\uff0c\u5f00\u59cb\u8ba8\u8bba\u6b63\u9898\u3002\u6211\u4eec\u5c06\u4f7f\u7528NgModel\u6765\u5b9e\u73b0\u53cc\u5411\u7ed1\u5b9a\u3002<\/p>\n<pre class=\"post-pre\"><code>import {Component} from \"@angular\/core\";\r\n\r\n@Component({\r\n  selector: \"my-app\",\r\n  template: `\r\n    &lt;h1&gt;{{title}}&lt;\/h1&gt;\r\n    &lt;input type='text' [(ngModel)]=\"title\"&gt;\r\n  `\r\n})\r\nexport class AppComponent {\r\n  title: string = \"Hello World\";\r\n}\r\n<\/code><\/pre>\n<p>\u8fd9\u6837\u4f7f\u7528\u53cc\u5411\u7ed1\u5b9a\u5c31\u66f4\u52a0\u7b80\u5355\u4e86\u3002[(&#8230;)]\u7684\u8bb0\u6cd5\u975e\u5e38\u7279\u6b8a\u3002\u5728\u5b98\u65b9\u7f51\u7ad9\u4e0a\uff0c\u8fd9\u79cd\u8bb0\u6cd5\u88ab\u79f0\u4e3a\u201c\u9999\u8549\u5728\u76d2\u5b50\u91cc\u201d\u3002\uff08\u786e\u5b9e\u50cf\u662f\u9999\u8549\u88c5\u5728\u76d2\u5b50\u91cc\u4e00\u6837&#8230;\uff09<\/p>\n<p>\u57fa\u4e8e\u524d\u8ff0\u8ba8\u8bba\uff0c\u6211\u4eec\u53ef\u4ee5\u7406\u89e3\u8fd9\u610f\u5473\u7740\u5b9e\u73b0\u4e86\u8f93\u5165\u548c\u8f93\u51fa\u4e24\u65b9\u9762\u7684\u529f\u80fd\u3002<\/p>\n<p>\u987a\u5e26\u4e00\u63d0\uff0c\u4e5f\u53ef\u4ee5\u5199\u6210[(ngModel)]=&#8221;title&#8221; &lt;=&gt; [ngModel]=&#8221;title&#8221; (ngModelChange)=&#8221;title=$event&#8221; &lt;=&gt; bindon-value=&#8221;title&#8221;\u3002\u8fd9\u663e\u793a\u51fa\u4e86\u540c\u65f6\u5b58\u5728\u8f93\u5165\u548c\u8f93\u51fa\u65b9\u6cd5\uff0c\u8bf4\u660e\u5173\u6ce8\u4e86\u6570\u636e\u7ed1\u5b9a\u7684\u65b9\u5411\u3002<\/p>\n<h1>\u6700\u540e<\/h1>\n<p>\u3053\u3053\u3089\u3078\u3093\u3067()[]bind-on-\u306a\u3069\u3092\u30d1\u30fc\u30b9\u3057\u3066\u3044\u307e\u3059\u306d\u3002\u30bd\u30fc\u30b9\u3092\u898b\u308b\u3068\u7406\u89e3\u304c\u6df1\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>[ngModel]\u3092[ng-model]\u3084[NgModel]\u3068\u66f8\u3044\u3066\u3082\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u6b62\u307e\u3063\u3061\u3083\u3046\u306e\u3067\u6c17\u3092\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002<br \/>\n\u4eca\u56de\u306e\u30bd\u30fc\u30b9\u306fGitHub\u306b\u3042\u3052\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f60\u597d\u3002\u6211\u662f\u4eca\u4e95\u3002 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