jQuery 如何在jQuery中检测当前元素ID?

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时间:2020-08-27 10:50:57  来源:igfitidea点击:

How to detect current element id in jQuery?

jquery

提问by Mohammad Saberi

I have some HTML codes:

我有一些 HTML 代码:

<input type="button" id="btn1" class="myButton" value="Button 1"/>
<input type="button" id="btn2" class="myButton" value="Button 2"/>

I need to run a jQuery function whenever user click each button, and I have to do it using their class.

每当用户单击每个按钮时,我都需要运行一个 jQuery 函数,并且我必须使用他们的类来执行此操作。

$('.myButton').click(function() {
   // do something
});

But what I should to do, depends on the current element Id.

但是我应该做什么,取决于当前的元素 Id。

My question is that how can I detect which element called this function? I need to know its id.

我的问题是如何检测哪个元素调用了这个函数?我需要知道它的ID。

回答by Emre Erkan

You can use thisto access current element and then this.idwill give you the idof the current element.

您可以使用this来访问当前元素,然后this.id会给您id当前元素的 。

$('.myButton').click(function() {
    alert(this.id);
});

回答by Armin

If you want to keep in jquery context, you could use this snippet:

如果你想保持在 jquery 上下文中,你可以使用这个片段:

$('.myButton').click(function() {
    alert($(this).attr('id'));
});

With this way you are a bit more flexible.

通过这种方式,您会更加灵活。

回答by andreapier

Look at this. You can just use the attr() method to get the id of the clicked element as you bind a click callback to EVERY element with .myButton class.

看看这个。当您使用 .myButton 类将点击回调绑定到每个元素时,您可以使用 attr() 方法来获取被点击元素的 id。

回答by Jmunoz Dev

With jQuery i found this working:

使用 jQuery 我发现这个工作:

$(this).prop('id')

回答by Didier Ghys

thisin the event handler is the element that was clicked:

this在事件处理程序中是被点击的元素:

$('.myButton').click(function() {

   if (this.id === "btn1") {
       ...
   }    

});