var url="http://www.softwhy.com/home.php?mod=space&do=home&view=all";
if(url.indexOf("?")!=-1) 
{
var str=url.substr(url.indexOf("?")+1);
strs=str.split("&");
for(i=0;i<strs.length;i++) 
{
alert(strs.length);
alert(strs[i].split("=")[0]);
alert(strs[i].split("=")[1]);
alert(strs[i].split("=")[0],'＝',strs[i].split("=")[1],'<br>');
}
}

<script type="text/javascript">
Request = {
QueryString : function(item){
var svalue = location.search.match(new RegExp("[\?\&]" + item + "=([^\&]*)(\&?)","i"));
return svalue ? svalue[] : svalue;
}
}
alert(Request.QueryString("id"));
</script>

<script type="text/javascript">
var URLParams = new Array();
var aParams = document.location.search.substr().split('&');
for (i=; i < aParams.length i++){
var aParam = aParams.split('=');
URLParams[aParam[]] = aParam[];
}
//获取传过来的name参数：
name=URLParams["name"];
</script>

<script type="text/javascript">
function getvalue(name)
{
var str=window.location.search;
if (str.indexOf(name)!=-)
{
var pos_start=str.indexOf(name)+name.length+;
var pos_end=str.indexOf("&",pos_start);
if (pos_end==-)
{
return str.substring(pos_start);
}
else
{
return str.substring(pos_start,pos_end)
}
}
else
{
return "没有这个name值";
}
}
var strName=prompt("请输入您所要值的名字");
alert(getvalue(strName));
</script>