如何获取呼叫者事件和dom元素ID [英] How to get the caller event and dom element id

问题描述

<script>
function Hello(){
    var caller =  arguments.callee.caller;
    alert( caller );
}
</script>

<input type="button" id="btnHello" value="Hello" onclick="Hello()" />

如何在不传递Hello函数中任何参数的情况下，从上述Hello函数获取按钮ID

How to get the button id from the the Hello function above with out passing the any argument in the Hello function

推荐答案

事件对象自动传递给Hello函数.您需要将其作为参数接收，然后做一些跨平台的工作来获取元素.JS框架将在这里为您提供帮助.

An event object is passed to the Hello function automatically. You need to receive it as an argument and then do some cross-platform work to grab the element. A JS framework will help you out here.

function Hello(e){
    var caller = e.target || e.srcElement;
    console.log( caller );
}

编辑
+1以下安德鲁的评论.最好使用addEventListener和attachEvent.

EDIT
+1 Andrew's comment below. Use addEventListener and attachEvent for best practice.

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