Function findElement

HTML/external/syntaxhighlighter_3.0.83/src/shCore.js:487–511

* Looks for a child or parent node which has specified classname. * Equivalent to jQuery's $(container).find(".className") * @param {Element} target Target element. * @param {String} search Class name or node name to look for. * @param {Boolean} reverse If set to true, will go up the node tree i

(target, search, reverse /* optional */)

 * @return {Element} Returns found child or parent element on null.
 */
function findElement(target, search, reverse /* optional */)
{
	if (target == null)
		return null;
		
	var nodes			= reverse != true ? target.childNodes : [ target.parentNode ],
		propertyToFind	= { '#' : 'id', '.' : 'className' }[search.substr(0, 1)] || 'nodeName',
		expectedValue,
		found
		;

	expectedValue = propertyToFind != 'nodeName'
		? search.substr(1)
		: search.toUpperCase()
		;
		
	// main return of the found node
	if ((target[propertyToFind] || '').indexOf(expectedValue) != -1)
		return target;
	
	for (var i = 0; nodes && i < nodes.length && found == null; i++)
		found = findElement(nodes[i], search, reverse);
	
	return found;
};

/**
 * Looks for a parent node which has specified classname.