how to get form size

[SAMSOL]

slt..
I have a problem with js to clacul size of my body -- editor--

expl :

fonction getsize()
{

what .....

}
<form>
<textarea>i love js </textarea>
<botton onclick=getsize();>
</form>


tanks

[Tcobb]

You need to be able to identify the element--try giving the element an id, such as "myTextArea".

function getSize(id){
    var el = document.getElementById(id);
    var width = el.offsetWidth;
    var height = el.offsetHeight;
    alert( "Width: " + width +"px  Height: " + height + "px");
}