api用途:获取指定元素的父节点。
兼容性参考:http://zhangyaochun.iteye.com/blog/1439707
/*
*_g*
*@inner-function*
*@param id*
*@return {HTMLElemet}*
*@relay on ZYC.lang*
*/
ZYC.dom._g = function(id){
if(ZYC.lang.isString(id)){
return document.getElementById(id);
}
return id;
}
/*
*getParent --get the parent node of the target element*
*@function*
*@param {HTMLElement|String} element*
*@return {HTMLElement|null}*
*/
ZYC.dom.getParent = function(element){
element = ZYC.dom._g(element);
//parentElement ---ie
//parentNode --ff
return element.parentElement || element.parentNode || null;
};