日期的格式 字符串转日期

var myDate = new Date(); //输出：Sat Nov 26 2016 16:15:27 GMT+0800 (中国标准时间)
myDate.toLocaleDateString()；可以获取当前日期 //下午4:15:27
myDate.toLocaleTimeString(); 可以获取当前时间 //2016/11/26

扩展：
myDate.getYear(); //获取当前年份(2位)
myDate.getFullYear(); //获取完整的年份(4位,1970-????)
myDate.getMonth(); //获取当前月份(0-11,0代表1月)
myDate.getDate(); //获取当前日(1-31)
myDate.getDay(); //获取当前星期X(0-6,0代表星期天)
myDate.getTime(); //获取当前时间(从1970.1.1开始的毫秒数)
myDate.getHours(); //获取当前小时数(0-23)
myDate.getMinutes(); //获取当前分钟数(0-59)
myDate.getSeconds(); //获取当前秒数(0-59)
myDate.getMilliseconds(); //获取当前毫秒数(0-999)
myDate.toLocaleString( ); //获取日期与时间

需求：在JS中获得一个当前时间并格式化为yyyy-MM-dd hh:mm:ss格式

就这么简单

var myDate = new Date();
var myYear = myDate.getFullYear();
var myMonth = myDate.getMonth();
myMonth =++myMonth
myMonth = myMonth>9?myMonth:'0'+myMonth;
var date = myDate.getDate();
date = date>9?date:'0'+date;
var hour = myDate.getHours();
hour = hour>9?hour:'O'+hour;
var minute = myDate.getMinutes();
minute = minute>9?minute:'O'+minute;
var setDate = myYear + "-"+myMonth +" "+date +"-"+ hour +":"+minute;
console.log(setDate);

console.log(typeof setDate)//string

将字符串转成日期

var str ='2012-08-12 23:13:15';
str = str.replace(/-/g,"/");
var date = new Date(str );//"2012/08/12 23:13:15"
console.log(typeof date)//object

这时候去打印console.log(typeof date)//object