Javascript获取点击的超链接的ID

Question

我想知道如何在单击相应链接时将当前超链接 ID 设置为隐藏字段。 html控件代码如下:

<a href="#TB_inline?height=155&width=300&inlineId=hiddenModalContent" class="thickbox" id="ExpressionsLink"
          title="Create expression column" onclick="keepID()">Add Expressions Model</a> 
           <a href="#TB_inline?height=155&width=300&inlineId=hiddenModalContent" class="thickbox" id="AggregateMethodLink"
          title="Create aggregate column">Add Aggregate Methods</a><input id="HiddenIdHolder" 
          type="hidden" />

我需要在隐藏字段“HiddenIdHolder”上单击的链接的 ID。

Javascript

 function keepID() {
     var hiddenInput = document.getElementById("HiddenIdHolder");
     hiddeninput.value= ? // What can i do here to get the id?
 }

Answer 1

this 指的是元素本身。 <强> Example on jsFiddle

onclick="keepID(this)"

然后

function keepID(element)
{
    var hiddenInput = document.getElementById("HiddenIdHolder");
    hiddeninput.value = element.getAttribute("id");
}