问一取值?

Question

function getVal(){
 var url=document.URL;
 下面不知如何写了?
}

Answer 1

<script>
var a = "http://www.xx.com/baodian/index.asp"
var b = a.substring(0,a.lastIndexOf("/"));
var c = b.substring(b.lastIndexOf("/")+1)
alert(c);
</script>

Answer 2

<script>
function GetURL(str)
{
//var a = "http://www.xx.com/baodian/index.asp"
var b = str.substring(0,str.lastIndexOf("/")); //这一步先去掉/index.asp字串字符,剩下http://www.xx.com/jigou
var c = b.substring(b.lastIndexOf("/")+1); //这一步取http://www.xx.com/后面的字符, 即jigou
alert(c);
}
</script>
<input type="button" value="第一个链接" onClick="GetURL('http://www.xx.com/jigou/index.asp')">
<input type="button" value="第二个链接" onClick="GetURL('http://www.xx.com/fenlei/index.asp')">
<input type="button" value="第三个链接" onClick="GetURL('http://www.xx.com/baodian/index.asp')">

Answer 3

var sUrl="http://www.xx.com/jigou/index.asp"
        +"http://www.xx.com/fenlei/index.asp"
        +"http://www.xx.com/baodian/index.asp";
var oReg=/[0-aA-Z]+(?=\/index.asp)/gi;
alert(sUrl.match(oReg));

Answer 4

如果'http://www.xx.com/jigou/index.asp'后面不index.asp呢?