Use js to display the current system time-JS Tutorial-php.cn

Use js to display the current system time

一个新手

Release： 2017-09-11 10:11:57

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<!--代码展示-->
<html>
<head>
<metahttp-equiv="Content-Type"content="text/html; charset=gb2312"/>
<title>无标题文档</title>
<scripttype="text/javascript">
 
//定义函数：构建要显示的时间日期字符串
function showTime()
{
 //创建Date对象
 var today = new Date();
 //分别取出年、月、日、时、分、秒
 var year = today.getFullYear();
 var month = today.getMonth()+1;
 var day = today.getDate();
 var hours = today.getHours();
 var minutes = today.getMinutes();
 var seconds = today.getSeconds();
 //如果是单个数，则前面补0
 month  = month<10 ? "0"+month : month;
 day = day <10  ? "0"+day : day;
 hours = hours<10  ? "0"+hours : hours;
 minutes= minutes<10 ? "0"+minutes : minutes;
 seconds= seconds<10 ? "0"+seconds : seconds;
   //构建要输出的字符串
 varstr = year+"年"+month+"月"+day+"日 "+hours+":"+minutes+":"+seconds;
   //获取id=result的对象
 varobj = document.getElementById("result");
 //将str的内容写入到id=result的<p>中去
 obj.innerHTML = str;
 //延时器
 window.setTimeout("showTime()",1000);
}
</script>
<styletype="text/css">
#result{
 width:500px;
 border:1px solid #CCCCCC;
 background:#FFFFCC;
 margin:50px auto;
 font-size:24px;
 color:#FF0000;
 padding:20px;
}
</style>
</head>
 <bodyonload="showTime()">
<pid="result"></p>
</body>
</html>

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