HTML+JavaScript：计时demo

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>时钟</title>
</head>
<body>
<p>页面显示时间</p>
<p id="time"></p>
<button onclick="stopTiming()">停止计时</button>
<script>
var myTime = setInterval(function(){myTimer()}, 1000);
function myTimer(){
var d = new Date();
var timeStr = d.toLocaleString();
document.getElementById("time").innerHTML = timeStr;
}

function stopTiming(){
clearInterval(myTime);
}
</script>
</body>
</html>