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js implements refresh time in seconds

php中世界最好的语言Original: 2018-04-17 09:28:101741browse

This time I will bring you js to implement refresh time in seconds, and js to implement refresh time in seconds. What are the precautions . Here is a practical case, let’s take a look. .

Principle: Use a timer, that is, setInterval(fn,i), to execute fn every i seconds.

The specific code is given below

1. The code is as follows:

<span style="font-size:14px;"><!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>用js实现每隔一秒刷新时间(含年月日时分秒)</title>
<style>
#time{background:#33F;
   color:white;
	 height:30px;
	 line-height:30px;
	 padding:20px;
	 font-size:18px;
	 width:400px;
	 text-align:center;
	 margin:0 auto;
	 margin-top:200px;}
</style>
</head>
<body>
	<p id="time"></p>
	<script type="text/javascript"> 
	 setInterval(function(){
		 var time=new Date();
		 var year=time.getFullYear(); //获取年份
		 var month=time.getMonth()+1; //获取月份
		 var day=time.getDate();  //获取日期
		 var hour=checkTime(time.getHours());  //获取时
		 var minite=checkTime(time.getMinutes()); //获取分
		 var second=checkTime(time.getSeconds()); //获取秒
		 /****当时、分、秒、小于10时，则添加0****/
		 function checkTime(i){
			 if(i<10) return "0"+i;
			 return i;
		 }
		 var box=document.getElementById("time");
		 box.innerHTML=year+"年"+month+"月"+day+"日 "+hour+":"+minite+":"+second;		 
		},1000);   //setInterval(fn,i) 定时器，每隔i秒执行fn
</script>
</body>
</html></span><span style="font-size:32px;">
</span>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

js implements refresh time in seconds

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