javascript_获取网页标题代码

javascript_获取网页标题代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.jzread.com/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>javascript_获取网页标题代码</title>
<script language="javascript">
function get_pagetitle(split_chr,new_pagetit)
{
 var titleitems,return_title;
 var the_pagetitle=document.title;
 titleitems=the_pagetitle.split(split_chr);
 return_title=the_pagetitle;
 if(titleitems[1])
 {
  return_title=the_pagetitle.replace(titleitems[1],new_pagetit)
 }
 else
 {
  if(new_pagetit)
  {
   return_title=the_pagetitle & split_chr & new_pagetit;
  }
 }
 alert(return_title);
}
</script>
</head>

<body>
<input value="测试"  type="button" onclick="javascript:get_pagetitle('_','=');" />
</body>
</html>