AngularJS 模型
ng-model 指令
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ng-model 指令用于绑定应用程序数据到 HTML 控制器(input, select, textarea)的值。
<div ng-app="myApp" ng-controller="myCtrl"> 名字: <input ng-model="name"> </div> <script>var app = angular.module('myApp', []); app.controller('myCtrl', function($scope) { $scope.name ="John Doe"; }); </script> -
双向绑定
<div ng-app="myApp" ng-controller="myCtrl"> 名字: <input ng-model="name"> <h1>你输入了: {{name}}</h1> </div> -
验证用户输入
<form ng-app="" name="myForm"> Email: <input type="email" name="myAddress" ng-model="text"> <span ng-show="myForm.myAddress.$error.email">不是一个合法的邮箱地址</span> </form> -
响应状态
ng-model 指令可以为应用数据提供状态值(invalid, dirty, touched, error):<form ng-app="" name="myForm" ng-init="myText = 'test@runoob.com'"> <p> Email: <input type="email" name="myAddress" ng-model="myText" required> </p> <h1>状态</h1> {{myForm.myAddress.$valid}} {{myForm.myAddress.$dirty}} {{myForm.myAddress.$touched}} </form> -
css 类
ng-model 指令基于它们的状态为 HTML 元素提供了 CSS 类：<style> input.ng-invalid { background-color: lightblue; } </style> <body> <form ng-app="" name="myForm"> 输入你的名字: <input name="myAddress" ng-model="text" required> </form> -
ng-model 指令根据表单域的状态添加或移除
- ng-empty
- ng-not-empty
- ng-touched
- ng-untouched
- ng-valid
- ng-dirty
- ng-pending
- ng-pristine
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