JS built-in Object-date object

Date object:

The data object can store any date and can be accurate to milliseconds (1/1000 seconds).

Defined:

Default initial value definition: var dataname=new Date (); /* Use keyword New;data First letter must capitalize to    make Dataname an object with initial value: Current computer system time *///Custom initial value definition: var dataname=naw Data (2016,5,25);//or: Var Dataname=new Data (' May 25,2016 ');            

A common method for working with time and date in the data object:

1.get/setdata (): Return/Set Date

1 var mydate=new Date ();//Current Time May 25, 2016 2 document.write (mydate+ "<br/>");//Output Current time
3 document.write (Mydate.getfullyear () + "<br/>");//output Current Year 4 mydate.setfullyear (16); Set Year 5 document.write (mydate+ "<br/>"); The output year is set to 0016 years
6 document.write (Mydate.getfullyear () + "<br/>");//output current year
Note: Different browser formats are different
Edge results: Wed 21:53:56 gmt+0800 (China Standard Time)
2016
Sun May, Bayi 21:53:56 gmt+0800 (China Standard Time)
16
Ie11,chrome Ibid.

2.get/setfullyear (): Returns/sets the year, expressed as a four-digit number

3.get/setyear (): Return/Set Year

4.get/setmonth (): Return/Set Month

5.get/sethours (): Return/Set //0 = January ... 11 means December, so it usually takes 1.

6.get/setminutes (): Returns/sets the number of minutes

7.get/setseconds (): Returns/sets the number of seconds

8.get/settime (): Return/Set Time (in milliseconds)

Returns/sets the time, in milliseconds, of the number of milliseconds from January 1, 1970 to 0 o'clock to the date the Date object refers to.

Example: Use the gettime () and SetTime () methods to postpone the time by 2 hours. The code is as follows:

1 var mydate=new Date (), 2 document.write ("Current time:" +mydate), 3 mydate.settime (mydate.gettima+120*60*1000); 4 document.write ("Time delayed after two hours:" +mydate);

9. Return Week Method: GetDay ()

Returns a number of 0-6 in the week, 0 representing Sunday.

If you want to return a relative "week", you can do this by using an array, getday the return value as an array subscript:

1 var mydate=new Date (); 2 var weeknum=mydate.getday (); 3 var week=["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];4 document.write ("Today is:" +week[weeknum]);

JS built-in Object-date object