查询元素是否含有指定的属性

api的应用场景是：查询元素是否含有指定的属性。

 

关于ZYC.dom.g的资料：http://zhangyaochun.iteye.com/blog/1439262

 

 

 

 

/*
*hasAttr --- check the element if it has the name attribute*
*@function*
*@param {HTMLElement} element*
*@param {String} name the name that looked for*
*@return {Boolean}*
*/
ZYC.dom.hasAttr = function(element,name){
    element = ZYC.dom.g(element);
	var attr = element.attributes.getNamedItem(name);
	return !!(attr && attr.specified);
};