name 属性可设置或返回按钮的名称。
buttonObject.name=name
下面的例子可返回按钮的名称：
<html>
<body>
<form>
<input type="button" id="button1"
name="button1" value="Click Me!" />
</form>
<p>The name of the button is:
<script type="text/javascript">
x=document.getElementById('button1');
document.write(x.name);
</script></p>
</body>
</html>