AngularJS ng-change不調用函數

Question

當用戶在電子郵件文本框中鍵入內容時，我試圖在引導彈出窗口中更改內容。 ng-change似乎沒有進入updateToolTip()方法。 我是AngularJS的新手。 任何建議表示贊賞。

HTML頁面

<div ng-controller="LoginController">

  <for name="form" ng-submit="login()">

    <input type="email" name="email" ng-model="user.email" value="{{user.email}}" ng-change="updateToolTip()" popover="{{emailMessage}}" popover-trigger="focus" popover-placement="right" required>

    <button class="btn btn-lg btn-primary btn-block" type="submit" ng-disabled="form.$invalid">Sign in</button>
  </form>

</div>

JS

var loginModule = angular.module('loginModule', ['ui.bootstrap']);

// Controller for the login page
loginModule.controller('LoginController', ['$scope', '$http', function($scope, $http) {

    $scope.emailMessage = 'test';   

    $scope.updateToolTip = function() {

        $scope.emailMessage = 'asdfsadf';   
        console.log();
        console.log(' inside function');
        if($scope.user != null) {
            console.log('user not null');
            if($scope.user.email.$dirty && $scope.user.email.$error.email) {
                console.log('email dirty and error');
                $scope.emailMessage = 'Invalid Email!';
            } else if($scope.form.email.$dirty && $scope.form.email.$error.required) {
                console.log('emaildirty and required');
                $scope.emailMessage = 'Email Required';
            }
        }
    }
}]);

Answer 1

將form名稱更改為name="user" 。 喜歡

 <form class="form-signin" name="user" ng-submit="login()">

由於您使用表單模型，如user.XXXX 。

演示柱塞

[編輯]

我會這樣寫驗證：

<input 
   type="email"
   name="email"
   class="form-control"
   placeholder="Email address"
   ng-model="user.email"
   popover="{{emailMessage}}"
   popover-trigger="focus"
   popover-placement="right"
   required
   >
    <span class="error" ng-show="mailform.email.$error.required">required</span>
    <span class="error" ng-show="mailform.email.$error.email">invalid email</span>


    <input 
    type="password"
    name="password"
    class="form-control"
    placeholder="Password"
    ng-model="user.password"
    value="{{user.password}}" required    >
    <span class="error" ng-show="mailform.password.$error.required">required</span>

演示2 柱塞

也許這個例子也可能對您有幫助：Demo 3 Plunker