javascript 手动触发窗口对象上的事件
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Manually trigger an event on window object
提问by Mark
I am adding a listener like so:
我正在添加一个这样的监听器：
window.addEventListener('native.showkeyboard', function (e) {
...
...
});
I'm writing a unit test for this so I want to trigger the event. Im doing:
我正在为此编写单元测试，因此我想触发该事件。我正在做：
window.trigger('native.showkeyboard');
But I end up with an error for that line saying:
但我最终得到了该行的一个错误说：
undefined is not a function
How can I manually trigger this event?
如何手动触发此事件？
EDIT
编辑
I have also tried:
我也试过：
$(window).trigger('native.showkeyboard');
but the handler doesnt run with this as it's not registered with jquery...
但是处理程序没有运行这个，因为它没有用 jquery 注册......
回答by PeterKA
If you are triggering the event via jQuerythen the event ought to have been attached via jQuery-- see @fredericHamidi's comment.
如果您通过以下方式触发事件，jQuery则该事件应该通过以下方式附加jQuery- 请参阅@fredericHamidi 的评论。
$(window).on('native.showkeyboard', function (e) {
.........
});
$(window).trigger('native.showkeyboard');
Or if you're using plain vanilla JS do it this way:
或者，如果您使用的是普通的 vanilla JS，请这样做：
window.addEventListener('native.showkeyboard', function (e) {
........
});
window.dispatchEvent( new Event('native.showkeyboard') );
回答by epascarello
well you are not working with a jQuery object...That would be your problem.
好吧，您没有使用 jQuery 对象...那将是您的问题。
window.trigger('native.showkeyboard'); //<-- window is not a jQuery object
You need to wrap it
你需要把它包起来
$(window).trigger('native.showkeyboard');
