​x
 
<html>
<head>
<script type="text/javascript">
function replaceDoc()
  {
  window.location.replace("http://www.w3school.com.cn")
  }
</script>
</head>
<body>
​
<input type="button" value="Replace document" onclick="replaceDoc()" />
​
</body>
</html>
​