<!DOCTYPE html>
<html>
<head>
	<title>JS动态更新时间</title>
	<script type="text/javascript">
		function updateTime() {
			var currentTime = new Date();
			var hours = currentTime.getHours();
			var minutes = currentTime.getMinutes();
			var seconds = currentTime.getSeconds();
			var formattedTime = hours + ":" + minutes + ":" + seconds;
			document.getElementById("time").innerHTML = formattedTime;
		}
<pre><code>	setInterval(updateTime, 1000);
&lt;/script&gt;
</code></pre>
</head>
<body>
	<div style="width: 150px; height: 150px; background-color: #ccc;" id="time"></div>
</body>
</html

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