HTML DOM blur() 方法
定义和用法
blur() 方法用于从单选按钮上移开焦点。
语法
radioObject.blur()实例
下面的例子可设置或移开单选按钮上的焦点：
<html>
<head>
<script type="text/javascript">
function setFocus()
{
document.getElementById('male').focus()
}
function loseFocus()
{
document.getElementById('male').blur()
}
</script>
</head>
<body>
<form>
Male: <input id="male" type="radio" name="Sex" value="Male" />
<br />
Female: <input id="female" type="radio" name="Sex" value="Female" />
<br />
<input type="button" onclick="setFocus()" value="Set focus" />
<input type="button" onclick="loseFocus()" value="Lose focus" />
</form>
</body>
</html>