How to access to iframe element?

Question

When you have a loop through all iframes in a page like this:

HTML:

<ul>
    <li id="a"><iframe src="..." /></li>
    <li id="b"><iframe src="..." /></li>
    <li id="c"><iframe src="..." /></li>
</ul>

JS:

    for (var i = 0;  i < window.frames.length;  i++) {
        if (window.frames[i].getName() == selector) {
            frame_item = ????
            break;
        }
    }

How can I get the DOM element for the < iframe>? Or following the example, how can I get the ID for the < li> item inside the loop?

Answer 1

UPDATED answer.

window.frames references directly to the IFRAME context (iframe's window object). AFAIK you cannot obtain IFRAME object by this way. You can access IFRAME's variables via window.frames[0].myVar.

To get all IFRAME node/objects use:

var iframes = document.getElementsByTagName('iframe'); //all iframes on page
for(var i=0; i<iframes.length; i++){
    alert(iframes[i].parentNode.id); // LI.id
    alert(iframes[i].contentWindow.myVar); //iframe's context
}

Alternatively you can assign id to UL element and

var ul = document.getElementById('ul_id');
var iframes = ul.getElementsByTagName('iframe'); //all iframes in UL
...