<script language="javascript">
<!--
var CurrURL = new String();
CurrURL = "http://www.xxx.com/abc/def.htm";
var MyURL = new String();
var homeURL = CurrURL;
var k = 0;
var j = CurrURL.length;
for (var i = 0; i < CurrURL.length; i ++)
{
if (CurrURL.charAt(i) == '/')
k ++;
if (k == 2)
j = i+1;
}
homeURL = homeURL.substring(0, j);
alert(homeURL);
//-->
</script>
<!--
var CurrURL = new String();
CurrURL = "http://www.xxx.com/abc/def.htm";
var MyURL = new String();
var homeURL = CurrURL;
var k = 0;
var j = CurrURL.length;
for (var i = 0; i < CurrURL.length; i ++)
{
if (CurrURL.charAt(i) == '/')
k ++;
if (k == 2)
j = i+1;
}
homeURL = homeURL.substring(0, j);
alert(homeURL);
//-->
</script>
document的domain属性
以及location的hostname,host,protocol都是相关的属性
prefURL = "http://";
var homeURL = new String();
homeURL = document.location.hostname;
homeURL = prefURL.concat(homeURL);
多谢 Zhangxdd