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AngularJS ng-focus 指令


示例

当输入字段获得焦点时执行表达式

<input ng-focus="count = count + 1" ng-init="count=0" />

<h1>{{count}}</h1>
亲自尝试 »

定义和用法

当 HTML 元素获得焦点时,ng-focus 指令告诉 AngularJS 该做什么。

来自 AngularJS 的 ng-focus 指令不会覆盖元素的原始 onfocus 事件,两者都会执行。


语法

<元素 ng-focus="表达式"></元素>

受 <a>、<input>、<select>、<textarea> 和 window 对象支持。


参数值

描述
表达式 当元素获得焦点时要执行的表达式。

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