你可以在自定义指令属性的使用角度事件监听器? [英] Can you use an angular event listener in a custom directive attribute?
问题描述
在普通的HTML,我们可以直接添加监听器在HTML元素例如事件。
In normal HTML we can directly add listeners to events on HTML elements e.g.
<button onclick="doMyMethod()">Click me</button>
我有发射事件,dataLoaded的自定义指令。我想一个处理程序声明添加到开始元素来处理该事件。但是我不知道如何做到这一点。
I have a custom directive which emits an event, "dataLoaded". I'd like to declaratively add a handler to the element to deal with that event. However I'm not sure how to do this
我在这里做了一个方法,但我喜欢做的事是这样的:
I'm making up a methodology here but I'd like to do something like:
<my-element ng-on="'dataLoaded', doMyMethod" ></my-element>
的(不良)替代
另一种方法是使用 $范围。$上(dataLoaded,doMyMethod())
控制器,但我会preFER宣布这对元件本身。
The (undesirable) alternative
The alternative is to use $scope.$on("dataLoaded", doMyMethod())
in the controller but I would prefer to declare this on the element itself.
这可能吗?
推荐答案
而不是用在这里的事件,你应该通过你的方法到像这样的指令:
Instead of using an event here, you should pass your method into the directive like so:
angular.module('myApp').directive('myElement', function() {
return {
scope: {
// way to bind method to your directive's scope
dataLoaded: '&'
},
link: function(scope, element) {
...
// instead of triggering data loaded, call method bound to scope
scope.dataLoaded();
...
}
});
您的HTML:
<my-element data-loaded="doMyMethod"></my-element>
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