​x
 
<!DOCTYPE html>
<html>
<head>
<script>
function changeLink()
{
document.getElementById('myAnchor').innerHTML="W3School";
document.getElementById('myAnchor').href="https://www.w3school.org.cn";
document.getElementById('myAnchor').target="_blank";
}
</script>
</head>
<body>
​
<a id="myAnchor" href="http://www.microsoft.com">微软</a>
<input type="button" onclick="changeLink()" value="更改链接">
​
</body>
</html>
​