javascript iterate nodeList XML

xml_parse.js

 var doc = xhreq.responseText;
var parser = new DOMParser();
var link = parser.parseFromString(doc, 'text/xml');
var items = link.documentElement.childNodes;
for (var item in items) {
    if(item.nodeName == 'link'){
        for(var attr in item.attributes.name) {
            if(item.attr.name == 'rel'){
                //do something awesome
	        return;
	    }
        }
    }
}

//this code should help you iterate and do something with link tag having rel attribute
var items = xmlDoc.documentElement.childNodes;
for (var index=0;index <items.length; index++) {
if(items[index].nodeName == 'link'){
for(var attrIndex=0; attrIndex < items[index].attributes.length; attrIndex++) {
if(items[index].attributes[attrIndex].nodeName == 'rel'){
//do something awesome
alert("found one link with rel attribute");
}
}
}
}

But why is there no iterator object on a nodelist maybe we should write one?