HTML页面如何象asp一样接受参数

<script language="JavaScript">
var pos,str,para,parastr,tempstr1;
tempstr="";
str = window.location.href;
pos = str.indexOf("?")
parastr = str.substring(pos+1);
document.write("<br>文件路径："+str);
if (pos>0){
document.write("<br>所有参数："+parastr);
}
else
{
document.write ("无参数");
}

if (str.indexOf("&")>0){
para = parastr.split("&");
for(i=0;i<para.length;i++)
{
tempstr1 = para[i];

pos = tempstr1.indexOf("=");
//document.write (tempstr1.substring(0,pos));
document.write ("<br>参数"+i+":"+tempstr1.substring(0,pos));
document.write ("等于:"+tempstr1.substring(pos+1));
}
}
</script>