JS实现获取当前URL和来源URL的方法

通用模式：

Javascript 正常取来源网页的URL只要用：

index.html：

<!DOCTYPE html>

<html lang="zh-cn">

<head>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1, user-scalable=no">

<title>新建H5模板</title>

</head>

<body>

<a href="demo.html">链接</a>

</body>

</html>

demo.html：

<!DOCTYPE html>

<html lang="zh-cn">

<head>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1, user-scalable=no">

<title>新建H5模板</title>

</head>

<body>

当前URL：<input type="text" style=" width:300px;" name="nowurl" id="nowurl"><br>

来源URL：<input type="text" style=" width:300px;" name="fromurl" id="fromurl">

<script>

  var nowurl = document.URL;

  var fromurl = document.referrer;

  document.getElementById('nowurl').value = nowurl;

  document.getElementById('fromurl').value = fromurl;

</script>

</body>

</html>

但，如果来源页是Javascript跳转过来的，上边的方法就拿不到了！所以用：

opener.location.href

var ref = '';

 if (document.referrer.length > 0) {

  ref = document.referrer;

 }

 try {

  if (ref.length == 0 && opener.location.href.length > 0) {

   ref = opener.location.href;

  }

 } catch (e) {}

其它相关的：

//获取页面完整地址

window.location.href

window.location.pathname

//获取域名

host = window.location.host;

host2=document.domain;

var num = Math.round(Math.random()*10000);

window.location.href = (window.location.pathname)+'?'+num+';

参考：http://www.jb51.net/article/91154.htm

javascript获取来路URL代码可获取js跳转来源

js获取当前域名