JS获取URL参数值

方法1

function getUrlParam(name) { 
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); 
var r = window.location.search.substr(1).match(reg); 
if (r != null) 
return unescape(r[2]); 
return null; 
} 

方法2

function request(paras)
    {
        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("=")).toLowerCase()] = j.substring(j.indexOf("=") + 1,j.length);
        }
        var returnValue = paraObj[paras.toLowerCase()];
        if(typeof(returnValue) == "undefined")
        {
            return "";
        }
        else
        {
            return returnValue;
        }
    }