AngularJS不会触发addEventListener处理的事件 [英] Angularjs doesn't trigger event handled by addEventListener

问题描述

我正在尝试通过addEventListener调用处理的mousedown事件来触发<A>元素上的事件，但我不知道为什么它不起作用.
我尝试使用angular.element(el).triggerHandler('click');，但是它只会触发通过ng-click指定的事件处理程序.

I'm trying to trigger event on a <A> element with mousedown event handled by addEventListener call but I don't know why it doesn't work.
I tried to use angular.element(el).triggerHandler('click'); but it only triggers event handler specified via ng-click.

在下面的代码中，当我单击触发器"链接时，仅将"first"打印到控制台.我如何也将其打印为零"?

In the code below when I click on 'trigger' link only 'first' is printed to console. How do I make it print 'zero' as well?

JSBin链接

HTML:

<a id='zero' href="#">zero</a><br/>
<a id="first" href="" ng-click="firstLinkClick()">first</a>
</br>
<a id="trigger" href="" ng-click="triggerLinkClick()">trigger</a>

Javascript:

document.getElementById('zero').addEventListener('click', function() {
  console.log('zero');
}, false);

app.controller('myCtrl', function myCtrl($timeout, $scope) {
  $scope.firstLinkClick = function() {
    console.log('first');
  };

  $scope.triggerLinkClick = function() {
    $timeout(function() {
      var el = document.getElementById('zero');
      angular.element(el).triggerHandler('click');
    }, 100);

    $timeout(function() {
      var el = document.getElementById('first');
      angular.element(el).triggerHandler('click');
    }, 100);
  };
});

推荐答案

Angular在内部使用jqLit​​e.如果您在Angular之前加载jQuery，它将使用jQuery而不是jqLit​​e.

Angular uses jqLite internally. If you load jQuery before Angular it will use jQuery instead of jqLite.

triggerHandler仅触发jqLit​​e/jQuery添加的事件.

triggerHandler only triggers events that are added by jqLite/jQuery.

要触发addEventListener添加的事件，您需要使用标准API.

To trigger events added by addEventListener you need to use the standard API.

例如:

var el = document.getElementById('zero');
el.click();

或者:

var el = document.getElementById('zero');
el.dispatchEvent(new Event('click'));

如果您需要支持较旧的浏览器，可以先阅读此处

If you need to support older browsers you can start by reading here.

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