自己看

setInterval;

clearInterval;

setTimeout;

clearTimeout;

getFullYears;

getMonths;记得+1月是从0开始的

getDates;

getDays;周几只是像是0,1,2,3,4,5,6,

var myTime = new Date();

// number
var iYear = myTime.getFullYear();
var iMonth = myTime.getMonth()+1;
var iDate = myTime.getDate();

var iWeek = myTime.getDay();
var iHours = myTime.getHours();
var iMin = myTime.getMinutes();
var iSec = myTime.getSeconds();
var str = '';

if( iWeek === 0 ) iWeek = '星期日';
if( iWeek === 1 ) iWeek = '星期一';
if( iWeek === 2 ) iWeek = '星期二';
if( iWeek === 3 ) iWeek = '星期三';
if( iWeek === 4 ) iWeek = '星期四';
if( iWeek === 5 ) iWeek = '星期五';
if( iWeek === 6 ) iWeek = '星期六';

// 天:Math.floor(t/86400)
// 时:Math.floor(t%86400/3600)
// 分:Math.floor(t%86400%3600/60)
// 秒:t%60

// 数字形式:new Date( 2013,4,1,9,48,12 );
// 字符串形式:new Date('June 10,2013 12:12:12');

// January、February、March、April、May、June、
// July、August、September、October、November、December

原文地址:https://www.cnblogs.com/hduhdc/p/5276228.html