JavaScript动态为图片添加边框的实现

<!DOCTYPE html>
<html>
<head>
<script>
function addBorder()
{
document.getElementById("compman").border="2";
}
</script>
</head>
<body>
<img id="compman" src="compman.gif" alt="Computerman" 
width="107" height="98">
<br><br>
<input type="button" onclick="addBorder()" 
value="Add border">
</body>
</html>