console.log(Date.now());//1468297046050
console.log(Date.now('2016,1,1'));//1468297046050
console.log(typeof Date.now());//'number'
console.log(new Date());//Tue Jul 12 2016 12:21:33 GMT+0800 (中国标准时间) console.log(+new Date());//1468297293433 console.log(+new Date(2000,1,1));//949334400000
var start = Date.now(); doSomething(); var stop = Date.now(); result = stop - start;
console.log(Date.parse('6/13/2004'));//1087056000000
console.log(Date.parse('January 12,2004'));//1073836800000
console.log(Date.parse('Tue May 25 2004 00:00:00 GMT-0700'));//1085468400000
console.log(Date.parse('2004-05-25T00:00:00'));//1085443200000
console.log(Date.parse('2016'));//1451606400000
console.log(Date.parse('T00:00:00'));//NaN
console.log(Date.parse());//NaN
console.log(Date.parse('7/12/2016'));//1468252800000
console.log(Date.parse('2016-7-12'));//1468252800000
console.log(Date.parse('2016-07-12'));//1468281600000
console.log(Date.UTC.length);//7
console.log(Date.UTC(1970));//NaN console.log(Date.UTC(1970,0));//0 console.log(Date.UTC(1970,0,2));//86400000 console.log(Date.UTC(1970,0,1,1));//3600000 console.log(Date.UTC(1970,0,1,1,59));//714000 console.log(Date.UTC(1970,0,1,1,59,30));//717000
Date();
console.log(Date());//"Tue Jul 12 2016 13:38:41 GMT+0800 (中国标准时间)"
console.log(Date('2016/1/1'));//"Tue Jul 12 2016 13:38:41 GMT+0800 (中国标准时间)"
console.log(typeof Date());//'string'
new Date();
console.log(new Date());//Tue Jul 12 2016 13:41:45 GMT+0800 (中国标准时间) console.log(new Date);//Tue Jul 12 2016 13:41:45 GMT+0800 (中国标准时间) console.log(typeof new Date());//'object'
new Date(milliseconds);
console.log(new Date(0));//Thu Jan 01 1970 08:00:00 GMT+0800 (中国标准时间) console.log(new Date(86400000));//Fri Jan 02 1970 08:00:00 GMT+0800 (中国标准时间) console.log(typeof new Date(0));//object
new Date(datestring);
console.log(new Date('6/13/2004'));//Sun Jun 13 2004 00:00:00 GMT+0800 (中国标准时间)
console.log(Date.parse('6/13/2004'));//1087056000000
console.log(typeof new Date(6/13/2004));//object
console.log(typeof Date.parse(6/13/2004));//number
console.log(new Date('7/12/2016'));//Tue Jul 12 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12'));//Tue Jul 12 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-07-12'));//Tue Jul 12 2016 08:00:00 GMT+0800 (中国标准时间)
console.log(new Date(2016,7,12));//Fri Aug 12 2016 00:00:00 GMT+0800 (中国标准时间) console.log(+new Date(2016,7,12));//1470931200000 console.log(typeof new Date(2016,7,12));//'object' console.log(Date.UTC(2016,7,12));//1470960000000 console.log(typeof Date.UTC(2016,7,12));//'number'
console.log(new Date(2016,7,32));//Thu Sep 01 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date(2016,8,1));//Thu Sep 01 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-8-32'));//Invalid Date
console.log(new Date('2016-9-1'));//Thu Sep 01 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12').toString());//Tue Jul 12 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12').toUTCString());//Mon, 11 Jul 2016 16:00:00 GMT
console.log(new Date('2016-7-12').toISOString());//2016-07-11T16:00:00.000Z
console.log(new Date('2016-7-12').toDateString());//Tue Jul 12 2016
console.log(new Date('2016-7-12').toTimeString());//00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12').toJSON());//2016-07-11T16:00:00.000Z
console.log(new Date('2016-7-12').toString());//Tue Jul 12 2016 00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12').toLocaleString());//2016/7/12 上午12:00:00
console.log(new Date('2016-7-12').toDateString());//Tue Jul 12 2016
console.log(new Date('2016-7-12').toLocaleDateString());//2016/7/12
console.log(new Date('2016-7-12').toTimeString());//00:00:00 GMT+0800 (中国标准时间)
console.log(new Date('2016-7-12').toLocaleTimeString());//上午12:00:00
var date1 = new Date(2007,0,1); var date2 = new Date(2007,1,1); console.log(date1 > date2);//false console.log(date1 < date2);//true
Date.now = function(){
return (new Date()).getTime()
}
console.log(new Date('2016-7-12').valueOf());//1468252800000
console.log(new Date('2016-7-12').getTime());//1468252800000
console.log(new Date('2016-7-12').getTimezoneOffset());//-480
console.log(new Date('2016-07-12T10:00').getYear());//116
console.log(new Date('2016-07-12T10:00').getFullYear());//2016
console.log(new Date('2016-07-12T10:00').getUTCFullYear());//2016
console.log(new Date('2016-07-12T10:00').getMonth());//6
console.log(new Date('2016-07-12T10:00').getUTCMonth());//6
console.log(new Date('2016-07-12T10:00').getDate());//12
console.log(new Date('2016-07-12T10:00').getUTCDate());//12
console.log(new Date('2016-07-12T10:00').getDay());//2
console.log(new Date('2016-07-12T10:00').getUTCDay());//2
console.log(new Date('2016-07-12T10:00').getHours());//18
console.log(new Date('2016-07-12T10:00').getUTCHours());//10
console.log(new Date('2016-07-12T10:00').getMinutes());//0
console.log(new Date('2016-07-12T10:00').getUTCMinutes());//0
console.log(new Date('2016-07-12T10:00').getSeconds());//0
console.log(new Date('2016-07-12T10:00').getUTCSeconds());//0
console.log(new Date('2016-07-12T10:00').getMilliseconds());//0
console.log(new Date('2016-07-12T10:00').getUTCMilliseconds());//0
//当前时间为16:35 console.log(new Date().getHours());//16 console.log(new Date().getUTCHours());//8
var d = new Date('2016-07-12T10:00');
console.log(d.setTime(86400000),d);//86400000 Fri Jan 02 1970 08:00:00 GMT+0800 (中国标准时间)
var d = new Date('2016-07-12T10:00');
console.log(d.setYear(2000),d,d.getYear());//963396000000 Wed Jul 12 2000 18:00:00 GMT+0800 (中国标准时间) 100
var d = new Date('2016-07-12T10:00');
console.log(d.setFullYear(2015,1,1),d.getFullYear());//1422784800000 2015
console.log(d.setMonth(2),d.getMonth());//1425204000000 2
console.log(d.setDate(20),d.getDate());//1426845600000 20
console.log(d.toLocaleString());//2015/3/20 下午6:00:00
var d = new Date('2016-07-12T10:20:30');
console.log(d.setHours(1,2,3),d.getHours());//1468256523000 1
console.log(d.setMinutes(2,3),d.getMinutes());//1468256523000 2
console.log(d.setSeconds(3),d.getSeconds());//1468256523000 3
console.log(d.toLocaleTimeString())//上午1:02:03
var d = new Date('2016-07-12T10:20:30');
console.log(d.setUTCHours(1,2,3),d.getHours());//1468285323000 9
console.log(d.setUTCMinutes(2,3),d.getMinutes());//1468285323000 2
console.log(d.setUTCSeconds(3),d.getSeconds());//1468285323000 3
console.log(d.toLocaleTimeString())//上午9:02:03
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