metaKey 事件屬性可返回一個布爾值,指示當(dāng)事件發(fā)生時,"meta" 鍵是否被按下并保持住。
event.metaKey
下面的例子可提示當(dāng)鼠標(biāo)按鍵被點擊時 "meta" 鍵是否被按住:
<html>
<head>
<script type="text/javascript">
function isKeyPressed(event)
{
if (event.metaKey==1
)
{
alert("The meta key was pressed!")
}
else
{
alert("The meta key was NOT pressed!")
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>Click somewhere in the document.
An alert box will tell you if you
pressed the meta key or not.</p>
</body>
</html>
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