js 获取url中的参数进行跨页面传递

/**
* Created by GYX on 2016/12/16.
* 说明：获取url中的参数
*/
var getUrlParam = {
param : function(name) {
var url = location.href;
var paraString = url.substring(url.indexOf("?")+1,url.length).split("&");
var paraObj = {};
for (i=0; j=paraString[i]; i++){
paraObj[j.substring(0,j.indexOf("="))] = j.substring(j.indexOf("=")+1,j.length);
}
var returnValue = paraObj[name];
if(typeof(returnValue)=="undefined"){return "";}else{return returnValue;}
}
}

/*key 为所需要接收的参数名字*/
getUrlParam.param('key')