如何从焦点/模糊中更改父元素的类?

时间:2014-08-04 23:02:49

标签: angularjs events focus parent blur

我尝试在获得焦点时将类添加到输入的父级。我可以得到父母,但我似乎无法设置类名。这是我在这个插件中尝试的内容:

http://plnkr.co/edit/eEfSeDb7i3uujjBZt21z?p=preview

<!DOCTYPE HTML>
<html id="ng-app" ng-app="app"> <!-- id="ng-app" IE<8 -->

<head>
    <link rel="stylesheet" href="http://nervgh.github.io/css/animate.min.css" />    
    <style>
        .highlight {
          border: 2px solid red;
        }
        .blue-border
        {
          border:2px solid blue;
        }
    </style>

     <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.7/angular.min.js"></script>    
    <script>
        angular.module( 'app', [])
            .run( function( $rootScope, $timeout ) {                   

                 $rootScope.focusInput= function($event )
                {
                    angular.element($event.target).parent().className += " " + 'highlight';
                    console.log( angular.element($event.target).parent() );
                };

                $rootScope.blurInput= function($event )
                {
                    angular.element($event.target).parent().className.replace(' highlight', '');                                       
                };
            });
    </script>

</head>
<body>

    <div class="blue-border">

      <input ng-focus="focusInput($event)" ng-blur="blurInput($event)" value="Lactobacillus acidophilus"/>  

</div>

</body>
</html>

注意它如何成功记录父项。但是,边框不会变红!是否还有其他一些&#34; Angulary&#34;这样做的方式?

1 个答案:

答案 0 :(得分:9)

Angular的JQLite提供了&#39; addClass&#39;和&#39; removeClass&#39;功能:

angular.element($event.target).parent().addClass('highlight');

请参阅此处的文档:https://docs.angularjs.org/api/ng/function/angular.element