'this' object in form elements

Hi,

I have seen some code around the place using the 'this' object differently to what I've seen in tutorials/references around the place.

I've read that 'this' points to the current window object, but I've also seen people doing this:

<input type="input" name="foo" onchange="setValue(this);">

Is this correct? When used in that context does the this object point at the input 'foo'?

Yes indeed. The object foo and its value is passed to the function setValue(), e.g.

function setValue(which) {
var theValue = which.value;
theValue ++ // or whatever
}

Thanks for that :) Makes my page much simpler to code and understand.

FYI: This (no pun intended) is very helpful when you have several <input>s that call the same function. For example you can type onClick="myFunction(this.type, this.name)" and then just copy-paste into each <input> field that would use that function...