jQuery :only-text Pseudo-Class

only-text.js

jQuery.expr[":"]["only-text"] = function (elem) {
	var i = elem.childNodes.length - 1, flag = false;
	for (; i >= 0; i -= 1){
		switch (elem.childNodes[i].nodeType){
			case 3: // 3: TEXT_NODE
				flag = true;
				break;
			case 7: // 7: PROCESSING_INSTRUCTION_NODE
			case 8: // 8: COMMENT_NODE
				break;
			default:
				return false;
		}            
	}
	return flag;
};

// Example:
jQuery('li:only-text').css('background-color', 'yellow');