本文实例为大家分享了js获取当前时间的具体代码，供大家参考，具体内容如下
js获取当前时间
(昨天、今天、明天)开发过程中某些前台页面的时间控件我们需要给默认当前时间，jquery可以轻松的帮我们实现，代码如下
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//昨天的时间
var day1 = new Date();
day1.setTime(day1.getTime()-24*60*60*1000);
var s1 = day1.getFullYear()+"-" + (day1.getMonth()+1) + "-" + day1.getDate();
//今天的时间
var day2 = new Date();
day2.setTime(day2.getTime());
var s2 = day2.getFullYear()+"-" + (day2.getMonth()+1) + "-" + day2.getDate();
//明天的时间
var day3 = new Date();
day3.setTime(day3.getTime()+24*60*60*1000);
var s3 = day3.getFullYear()+"-" + (day3.getMonth()+1) + "-" + day3.getDate();
//拼接时间
function show(){
var str = "" + s1 + "至" + s2;
return str;
}
//赋值doubleDate
$('#dateS').val(show());
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function writeCurrentDate() {
var Now = new Date();
var year = Now.getFullYear(); //得到年份
var month = Now.getMonth();//得到月份
var date = Now.getDate();//得到日期
var day = Now.getDay();//得到周几
var hour = Now.getHours();//得到小时
var minu = Now.getMinutes();//得到分钟
var sec = Now.getSeconds();//得到秒
var MS = Now.getMilliseconds();//获取毫秒
var week;
month = month + 1;
if (month < 10) month = "0" + month;
if (date < 10) date = "0" + date;
if (hour < 10) hour = "0" + hour;
if (minu < 10) minu = "0" + minu;
if (sec < 10) sec = "0" + sec;
if （MS < 100）MS = "0" + MS;
var arr_week = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
week = arr_week[day];
var time = "";
time = year + "年" + month + "月" + date + "日" + " " + hour + ":" + minu + ":" + sec + " " + week;
//当前日期赋值给当前日期输入框中（jQuery easyUI）
$("#currentDate").html(time);
//设置得到当前日期的函数的执行间隔时间，每1000毫秒刷新一次。
var timer = setTimeout("writeCurrentDate()",1000);
}
