能过URL进行传值.把要传递的信息接在URL上.

优点:取值方便.可以跨域.
缺点:值长度有限制.

Post.htm

<input type="text" name="username">
<input type="text" name="sex">
<input type="button" onclick="Post()" value="Post">
<script language="javascript" >
function Post()
{
    //单个值 Read.htm?username=baobao;
    //多全值 Read.htm?username=baobao&sex=male;
    url = "Read.htm?username="+escape(document.all.username.value);
    url += "&sex=" + escape(document.all.sex.value);
    location.href=url;
}
</script>

Read.htm

<script language="javascript" >
/*
 *--------------- Read.htm -----------------
 * Request[key]
 * 功能:实现ASP的取得URL字符串,Request("AAA")
 * 参数:key,字符串.
 * 实例:alert(Request["AAA"])
 *--------------- Request.htm -----------------
 */
var url=location.search;
var Request = new Object();
if(url.indexOf("?")!=-1)
{
    var str = url.substr(1)  //去掉?号
    strs = str.split("&");
    for(var i=0;i<strs.length;i++)
    {
        Request[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
    }
}
alert(Request["username"])
alert(Request["sex"])
</script>