如何在JavaScript中停止计时器? [英] How to stop timer in javascript?
本文介绍了如何在JavaScript中停止计时器?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想通过单击按钮停止计时器，但是我找不到确切的方法.我试图通过 clearInterval()停止计时器，但不确定是否调用正确.
I want to stop a timer by clicking a button but I can't find the exact way.
I've tried to stop a timer by clearInterval() but I'm not sure if it is called properly.
这是我的工作代码.
<html>
<head>
<title>Bootstrap</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" type="text/css" href="setest_style.css">
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
var sec = 0;
function pad(val) {
return val > 9 ? val : "0" + val;
};
setInterval( function(){
$("#seconds").html(pad(++sec%60));
$("#minutes").html(pad(parseInt(sec/60,10)));
}, 1000);
function myStopFunction() {
clearInterval(sec);
}
</script>
</head>
<body>
<div class="quiz-time">
<div class="timer">
<span id="minutes">00</span>:<span id="seconds">00</span>
</div>
<button href="#" id="show-explanation" class="button1" onclick="myStopFunction()">Stop</button>
</div>
</body>
</html>推荐答案
将设置的间隔作为变量，然后使用清除间隔
take that set interval into a variable then use clear interval
var myInterval = setInterval( function(){
$("#seconds").html(pad(++sec%60));
$("#minutes").html(pad(parseInt(sec/60,10)));
}, 1000);
function myStopFunction() {
clearInterval(myInterval);
}
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