id 屬性可設(shè)置或返回按鈕的 id。
buttonObject.id=id
下面的例子可設(shè)置按鈕的 id:
<html>
<head>
<script type="text/javascript">
function alertId()
{
alert(document.getElementById("myButton").id
)
}
</script>
</head>
<body>
<form>
<button id="myButton" onClick="alertId()">
Click me!</button>
</form>
</body>
</html>
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