JavaScript - onClick获取单击按钮的ID [英] JavaScript - onClick to get the ID of the clicked button

问题描述

How do find the id of the button which is being clicked?

<button id="1" onClick="reply_click()"></button>
<button id="2" onClick="reply_click()"></button>
<button id="3" onClick="reply_click()"></button>

function reply_click()
{
}

推荐答案

您需要发送ID作为函数参数。这样做：

You need to send the ID as the function parameters. Do it like this:

<button id="1" onClick="reply_click(this.id)">B1</button>
<button id="2" onClick="reply_click(this.id)">B2</button>
<button id="3" onClick="reply_click(this.id)">B3</button>

<script type="text/javascript">
function reply_click(clicked_id)
{
    alert(clicked_id);
}
</script>

这会将ID this.id 作为 clicked_id ，你可以在你的函数中使用它。 请在此处查看。

This will send the ID this.id as clicked_id which you can use in your function. See it in action here.

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