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+';
标签：URL,JS,获取,window,href,location,var,document From： https://www.cnblogs.com/Im-Victor/p/18173817