本文实例为大家分享了js实现时钟定时器的具体代码，供大家参考，具体内容如下
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>时钟</title>
<script type="text/javascript">
function showClock(){
// 1. 获取当前时间
var time = new Date();
// document.write(time);
var year = time.getFullYear();
// document.write(year);
var month = time.getMonth() + 1;
// document.write(month);
var day = time.getDate();
// var day1 = time.getDay();
// document.write(day1);
var hours = time.getHours();
// document.write(hours);
var minutes = time.getMinutes();
// document.write(minutes);
var seconds = time.getSeconds();
document.getElementById("clock").innerHTML = year+"-"+month+"-"+day+" "
+hours+":"+minutes+":"+seconds;
}
var flag = true;
var id;
function runClock(){
var btn = document.getElementById("btn");
if(flag){
// 计时操作
id = setInterval("showClock()",1000);
flag = false;
btn.innerHTML = "停止";
}else{
// 停止计时操作
clearInterval(id);
flag = true;
btn.innerHTML = "动起来";
}
}
</script>
</head>
<body>
<button οnclick="showClock()">点击显示时钟</button>
<div id="clock">
</div>
<button id="btn" οnclick="runClock()">动起来</button>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。