Question

How can i get the DOM element which fired onclick, in this situation :

<div onclick="ajax('?section=panel');">Hi</div>

and the ajax function is :

function ajax(url)
{
 alert(caller_element.innerHTML); // I need `caller_element` contain a reference to that DIV
 ...xmlhttp(url)...
}

Note that i cannot change HTML, i can only change ajax() function.

Answer 1

You can use Function.prototype.call to set the context of a function, like so:

<div onclick="ajax.call(this, '?section=panel');">Hi</div>

function ajax(url) {
    alert(this.innerHTML);
    ...xmlhttp(url)...
}

It would be just as easy to pass it as an argument, though.