定时器优化
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<input type="button" value="启动" onclick="time()"/>
</body>
</html>
<script type="text/javascript">
var timeout = false; //启动及关闭按钮
function time()
{
if(timeout) return;
Method();
setTimeout(time,1000); //time是指本身,延时递归调用自己,100为间隔调用时间,单位毫秒
}
function Method(){
console.log(1);
}
</script>

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