本文介绍了检查是否已单击或更改元素的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个愚蠢的问题,我想我已经知道答案了,但是我想从一个比我了解更多jquery知识的人那里找到答案.我有一个下拉列表,我想知道是否可以检查DDL是否已单击或更改.例子
I have some what of a stupid question and I think I already know the answer but I would Like to find out from someone with more jquery knowledge than I have.I have a drop down list and I would like to know if I can check to see if the ddl has been clicked or changed. Example
If($('#ddl').click() || $('#ddl').on('change'){
//do something.
}
推荐答案
您可以将click和change事件处理程序绑定到该元素并设置一个标志:
You can bind a click and change event handler to the element and set a flag:
$('#ddl').on('click change', function() {
$(this).data('clicked', true);
});
// later
if ($('#ddl').data('clicked')) {
// ...
}
当然,如果您想在单击或更改元素时执行操作,请将该代码直接放在事件处理程序中.在这种情况下,您不需要标志.
Of course if you want to perform an action when the element is clicked or changed, put that code directly in the event handler. You don't need a flag in that case.
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