Event.timeStamp
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
說明
回傳事件建立的時間（單位是毫秒；從 epoch 開始計算）。
Syntax
event.timeStamp
範例
var number = event.timeStamp;
下面是一個較為完整的範例：
html
<html>
<head>
<title>timeStamp example</title>
<script type="text/javascript">
function getTime(event) {
document.getElementById("time").firstChild.nodeValue = event.timeStamp;
}
</script>
</head>
<body onkeypress="getTime(event)">
<p>Press any key to get the current timestamp for the onkeypress event.</p>
<p>timeStamp: <span id="time">-</span></p>
</body>
</html>
注意
這個 property 僅在瀏覽器支持該事件才會有用。