Find Microdata properties Note: Without itemref support

findMicrodataProperties.js

function findMicrodataProperties(itemScopeNode, itemPropName) {
	if( !itemScopeNode.hasAttribute("itemscope") ) {
		return[];
	}

	var pending = []
		, tmp
		, currentNode
		, k = -1
		, el
		, result = []
	;
	
	itemPropName = " " + itemPropName + " ";

	while( currentNode = itemScopeNode.childNodes[++k] ) {
		if( currentNode.nodeType === 1 ) {
			pending.push(currentNode);
		}
	}

	while( currentNode = pending.pop() ) {
		if( tmp = currentNode.getAttribute("itemprop") ) {
			if( (" " + tmp + " ").indexOf(itemPropName) !== -1 ) {
				result.push(currentNode);
			}
		}

		if( !currentNode.hasAttribute("itemscope") ) {
			// Push all the child elements of current onto pending, in tree order
			// (so the first child of current will be the next element to be
			// popped from pending).
			k = currentNode.childNodes.length;
			while( el = currentNode.childNodes[--k] ) {
				if( el.nodeType === 1 ) {
					pending.push(el);
				}
			}
		}
	}

	return result;
}