compare two DOM trees walking the dom

compare2.js

function compare(nodeA, nodeB) {
	if ( !nodeA && !nodeB ) return true; //edge case
	if ( nodeA.nodeType === nodeB.nodeType && nodeA.tagName === nodeB.tagName && nodeA.nodeValue === nodeB.nodeValue ){
		var i = 0;
		var childA = nodeA.childNodes[i];
		var childB = nodeB.childNodes[i];
		while(childA && childB){
		        if (!compare(childA, childB)) return false; //some child is not equal
		        i++;
		        childA = nodeA.childNodes[i];
		        childB = nodeB.childNodes[i];
		}
		return true; //all children are equal trees compare
	}
	return false; //nodes are not equal
}