​x
 
<html>
<head>
<script type="text/javascript">
function currLocation()
{
alert(window.location)
}
function newLocation()
{
window.location="/index.html"
}
</script>
</head>
​
<body>
<input type="button" onclick="currLocation()" value="显示当前的 URL">
<input type="button" onclick="newLocation()" value="改变 URL">
</body>
​
</html>
​