Summarizing the use of date objects in JavaScript _javascript tips

JSON date to JS date, we know that after the date type is converted to JSON, the returned data looks like this:

/date (1379944571737)/

But this date does not appear directly, because no one knows what it means, and here's a way to turn the JSON date to a JS date.

function Convertjsondatetojsdate (jsondate) {
 var date = new Date (parseint Jsondate.replace ("/date (", ""). Replace ( ")/", "" "));
 return date;
}

In the date format that provides two dates to become accustomed to vision:

Yyyy-mm-dd
function getDate (date) {
 var year = Date.getfullyear ();
 var month = Date.getmonth () + 1;
 var day = Date.getdate ();
 Return year + "-" + month + "-" + Day;
}
Yyyy-mm-dd HH:mm:SS
function getdatetime (date) {
 var year = Date.getfullyear ();
 var month = Date.getmonth () + 1;
 var day = Date.getdate ();
 var hh = date.gethours ();
 var mm = Date.getminutes ();
 var ss = Date.getseconds ();
 Return year + "-" + month + "-" + Day + "" + hh + ":" + mm + ":" + ss;
}

Converts a string to the Date object's wording:

 var str = "2012-12-12";
 var date = new Date (str);  The string is converted to the Date object
 document.write (Date.getfullyear ()); You can then use the method of the date object to output the year.

One, Date.getdate () returns the number of the month in the Date object.

 var date = new Date ();  2012-12-19
 document.write (Date.getdate ()); Return 19 is number 19th.

Ii. Date.getday () Return date of the week of Sunday 0-Week 6

 var date = new Date ();
 document.write (Date.getday ()); 3 weeks 3

Third, Date.getfulyead () returns the year as 2012.

 var date = new Date ();
 document.write (Date.getfullyear ()); Back to 2012,2012 years

Four, date.gethours () returns the hour of the date, a few points, 0-23

 var date = new Date ();
 document.write (Date.gethours ()); Return 23, 11 o'clock in the evening

V. Date.getmilliseconds () The number of milliseconds in the return date

 var date = new Date ();
 document.write (Date.getmilliseconds ()); Return 27 The current is XX years, XX month, xx point, xx, xx seconds, xx millisecond milliseconds

Vi. date.getminutes () returns the number of minutes in the date 0-59

 var date = new Date ();
 document.write (Date.getminutes ()); 2012-12-19 23:22 return 22, 12:22

Seven, Date.getmonth ()//Returns the number of months in the date, return value 0 (January)-11 (December)

 var date = new Date ();
 document.write (Date.getmonth ()); 2012-12-19 here returns 11, note that there are some deviations from the usual understanding, January return is 0, December return is 11

Viii. date.getseconds ()//Return a description of a date

 var date = new Date ();
 document.write (Date.getseconds ()); · Back to 34,2012-12-19 23:27:34 27 minutes 34 seconds

Nine, Date.gettime ()//Return a Date object in milliseconds

 var date = new Date ();
 document.write (Date.gettime ()); The return 1355930928466 return value is the number of milliseconds from midnight 1970-01-01 to the current time.

Ten, Date.gettimezoneoffset ()//gmt time and local difference, expressed in minutes

 var date = new Date ();
 document.write (Date.gettimezoneoffset ()); Return-480 Actually this function gets the time zone in which JavaScript is running. Unit is minutes.

Xi. date.getutcdate ()//returns the date value in the Date object (global time)

 var date = new Date ();
 document.write (Date.getutcdate ()); return 19, 19th.

12, Date.getutcday ()//Returns the day of the week in the Date object (global time)

 var date = new Date ();
 document.write (Date.getutcday ()); Back 3 weeks 3

13, Date.getutcfullyear ()//returns the year in Date, 4 bits, such as 2012, (Global Time)

 var date = new Date ();
 document.write (Date.getutcfullyear ()); Return 2012

14, Date.getutchours ()//Returns the number of hours in the Date object, which is now the time, finally there is a difference with gethours (), it should be jet lag, the return of the global time.

 var date = new Date ();
 document.write (Date.getutchours ()); Now Beijing time is 2012-12-19 23:44, but the return is 15, that is, the number of hours in global time.

XV, Date.getutcmilliserconds ()//Returns the number of milliseconds in the Date object (global time)

 var date = new Date ();
 document.write (Date.getmilliseconds ()); Returns the number of milliseconds in global time

16, Date.getutcminutes ()//Returns the number of minutes in the Date object (global time)

 var date = new Date ();
 document.write (Date.getminutes ()); 2012-12-19 23:49 return 49, attention is global time, in fact, the global time should be different from the hour.

17, Date.getutcmonth ()//Returns the value of the month in the Date object (global time)

 var date = new Date ();
 document.write (Date.getmonth ()); 2012-12-19 return to 11,0 (January)-11 (December)

18, Date.getutcseconds ()//returns the number of seconds in the Date object

 var date = new Date ();
 document.write (Date.getseconds ()); Return seconds value returns 33

19, Date.getyear ()//returns the year value in the Date object minus 1900

 var date = new Date ();
 document.write (Date.getyear ()); 2012-12-19 return 112 (2012-1900)

20, Date.now () static method//Return 1970-01-01 midnight to the current time interval, expressed in milliseconds

document.write (Date.now ()); static method, which returns the current time with the time interval of 1970-01-01, the millisecond unit.

21, Date.parse ()//parsing a date-time string, returns the number of milliseconds between midnight 1970-01-01 and the given date

 var date = "2012-12-19";
 document.write (Date.parse (Date)); Returns 1355875200000
 var da = new Date (date);
 document.write ("<br/>" + da.getfullyear () + "-" + da.getmonth () + "-" + da.getdate ()); Output 2012-11-19//Note month is from 0-11

22, Date.setdate ()//Set the date value in a Date object, the return value with the adjusted date of the millisecond representation

 var date = new Date ();
 document.write (Date.setdate (11)); return 1355236647980//set to 11, actually December, set to 3 is actually April
var da = new Date (date);
 document.write ("<br/>" + da.getfullyear () + "-" + da.getmonth () + "-" + da.getdate ()); Output 2012-11-11//Note the month is from 0-11, set the time to note

23, Date.setfullyear ()//Setting the year in a Date object, the return value is represented by the millisecond of the adjusted date.

 var date = new Date (); Today is 2012-12-20
 document.write (Date.setfullyear (1989));//return 630167981030
 var da = new Date (date);
 document.write ("<br/>" + da.getfullyear () + "-" + da.getmonth () + "-" + da.getdate ()); Output 1989-11-20

24, Date.sethours ()//Set the number of trivial things in a Date object, the return value is expressed in milliseconds of the adjusted date.

 var date = new Date (); It is now 2012-12-52 22:52
 document.write (date.sethours (5));//return 1355954000882
 var da = new Date (date);
 document.write ("<br/>" + da.gethours ()); Output 05

25, Date.setmilliseconds ()//Set the number of milliseconds for a date

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setmilliseconds (22));//return 1356015393022 note the last two digits, regardless of the refresh is 22

26, Date.setminutes ()//Set the number of minutes of a date

 var date = new Date (); It is now 2012-12-52 22:52
 document.write (date.setminutes (1));//return 1356012067105
 var da = new Date (date);
 document.write ("<br/>" + da.getminutes ()); Output 1

27, Date.setmonth ()//Set the number of months of a date

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setmonth (2));//return 1332255597722
 var da = new Date (date);
 document.write ("<br/>" + da.getmonth ()); Output 2

28, Date.setseconds ()//Set a description of the date

Syntax: date.setseconds (seconds)

Date.setseconds (Seconds,millis)

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setseconds (3));//return 1356015783872
 var da = new Date (date);
 document.write ("<br/>" + da.getseconds ()); Output 3

29, Date.settime ()//use milliseconds to set a time

Syntax: Date.settime (milliseonds)

 var date = new Date (); It is now 2012-12-20
 document.write (Date.settime (1356015783872));//return 1356015783872
 var da = new Date (date);
 document.write ("<br/>" + da.getdate ()); Output 20

30, Date.setutcdate ()//Set the date value of the corresponding month in a Date object, which is the number (global time)

Syntax: Date.setutcdate (Day-of-month)

 var date = new Date (); It is now 2012-12-20
 document.write (date.setutcdate (12));//return 1355324952003
 var da = new Date (date);
 document.write ("<br/>" + da.getdate ()); Output 12

31, Date.setutcfullyear ()//set the corresponding year in a Date object, global time

Syntax: Date.setutcfullyear (year)

Date.setutcfullyear (Year,month)

Date.setutcfullyear (Year,month,day)

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setutcfullyear (1999));//return 945702713666
 var da = new Date (date);
 

32, Date.setutchours ()//set the corresponding number of hours in a Date object (global time)

Syntax: date.setutchours (Hours)

Date.setutchours (Hours,minutes)

Date.setutchours (Hours,minutes,seconds)

Date.setutchours (Hours,minutes,seconds,millis)

 var date = new Date (); It is now 2012-12-20
 document.write (date.setutchours (05));//return 1355980581928
 var da = new Date (date);
 

33, Date.setutcmilliseconds ()//set the corresponding number of milliseconds in a Date object (global time)

Syntax: Date.setutcmilliseconds (Millis)

  var date = new Date (); It is now 2012-12-20
  document.write (date.setmilliseconds (05));//return 1356016784005 Note that the refresh is 05 at the end anyway.

34, Date.setutcminutes ()//Set the minute, second, and millisecond values of a Date object.

Syntax: date.setutcminutes (minutes)

Date.setutcminutes (Minutes,seconds)

Date.setutcminutes (Minutes,seconds,millis)

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setutcminutes (25));//return 1356017146549
 var da = new Date (date);
 

35, Date.setutcmonth ()//Set the month value and date value of a Date object

Syntax: Date.setutcmonth (month)

Date.setutcmonth (Month,day)

 var date = new Date (); It is now 2012-12-20
 document.write (date.setmonth (01));//return 1329751527983
 var da = new Date (date);
 

36, Date.setutcseconds ()//Set a Date of the second and the millisecond value

Syntax: date.setutcseconds (seconds)

Date.setutcseconds (Seconds,millis)

 var date = new Date (); It is now 2012-12-20
 document.write (date.setutcseconds (01));//return 1356017281976
 var da = new Date (date);
 

37. Date.setyears ()//sets the year value of a Date object, and if the given parameter is between 0-99, it will add 1900 to handle the year between 1900-1999 of it. If you enter a 4-digit number, consider it a fullyear setting.

Syntax: Date.setyears (year)

 var date = new Date (); It is now 2012-12-20
 document.write (Date.setyear (22));//return 1356017281976
 var da = new Date (date);
 document.write ("<br/>" + da.getfullyear ()); Output 1922
 var date = new Date ();//Now 2012-12-20
 document.write (Date.setyear (2011));//Back to 1324395113386
 var da = new Date (date);
 document.write ("<br/>" + da.getfullyear ()); Output 2011

38, Date.todatestring ()//Returns a date part of the form as a string

Syntax: date.todatestring ()

 var date = new Date (); It's 2012-12-20.
 

39, Date.totimestring ()//Returns the time part of a date as a string

Syntax: date.totimestring ()

 var date = new Date (); It's 2012-12-20.
 

40, date.toisostring ()//Converting a Date object to a ISO-8601 format string

syntax; date.toisostring ()//return string format is YYYY-MM-DDTHH:MM:SSZ

 var date = new Date (); It's 2012-12-20.
 

41, Date.tojson//json serialization of an object

Syntax: A string representation of Date.tojson (key)//date, whose value is the result of the toisostring () method that invokes it

 var date = new Date (); It's 2012-12-20.
 

42, Date.tolocaledatestring ()//Returns a date part of a day in a locally formatted string

Syntax: date.tololcaledatestring//Return to a native readable date format, date part

 var date = new Date (); It is now 2012-12-20
 document.write (date.tolocaledatestring ());//Return December 20, 2012

43. Date.tolocalestring ()//Convert a Date to a local format string

Syntax: date.tolocalestring ()

 var date = new Date (); It's 2012-12-22.
 

44. Date.tolocaletimestring ()//Time part of converting a Date into a local format

 var date = new Date (); It's 2012-12-22.
 

45, Date.tostring ()//Convert a Date to a string

 var date = new Date (); It's 2012-12-22.
 

46, Date.totimestring ()//Returns the time portion of a Date object as a string

 var date = new Date (); It's 2012-12-22.
 

47. Date.toutcstring ()//Convert a Date object to a string (global time)

 var date = new Date (); It's 2012-12-22.
 

48, DATE.UTC ()//The form static method of converting a Date object to milliseconds

Syntax: DATE.UTC (YEAR,MONTH,DAY,HOURS,MINUTES,SECONDS,MS)

    document.write(Date.UTC(2011, 11, 11, 11, 11, 11)); //return 1323601871000

49, Date.valueof ()///If it is a Date object, converts a Date object to milliseconds, otherwise it does not display

 var date = "";
 document.write (Date.valueof ()); is not a Date object and does not output
 var date1 = new Date ();
 

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