原生JS实现读取当前时间,加一个setInterval 可以做时间秒级显示
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 time = "";
time = year + "-" + month + "-" + date + " " + hour + ":" + minu + ":" + sec;
$("#currentDate").html(time);
}