javascript之split,substring截取字符

<script languange="javascript">
 function show()
 {
  var url = parent.location.href;
  url = "http://www.wonlu.com/art/index.html"; //设置要获取的链接
  alert("url:"+url);
  
  var ss = url.split("/");
  alert(ss[ss.length-2]);
  //alert("/ss:"+ss);
  var temp = url.substring(18,20)//截取字符区间
  alert("temp:"+temp);
  
 }
</script>
<input type="button" onclick="show()" value="SHOW">

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