The date function of JavaScript

The JavaScript date function consists of the following 20 functions:

(1) getDate function: Returns the day portion of the date with a value of 1~31. Cases:

function Datedemo () {var d, s = "Today ' s date is:";　　　　 D = new Date ();　　　　 s + = (D.getmonth () + 1) + "/";　　　　 s + = D.getdate () + "/";　　　　 s + = D.getyear ();　　　 return (s); }

(2) GetDay function: Returns the day of the week with a value of 0~6, where 0 represents Sunday, 1 represents Monday, ..., and 6 means Saturday. Cases:

function Datedemo () {var d, day, x, s = ' Today is: ';　　　　 var x = NewArray ("Sunday", "Monday", "Tuesday");　　　　 var x =x.concat ("Wednesday", "Thursday", "Friday");　　　　 var x =x.concat ("Saturday");　　　　 D = new Date ();　　　　 Day = D.getday ();　　　 return (s + = X[day]); }

(3) getHours function: Returns the "hour" portion of the date, with a value of 0~23. Cases.

function Timedemo () {var d, s = "The currentlocal time is:";　　　　 var c = ":";　　　　 D = new Date ();　　　　 s + = d.gethours () + C;　　　　 s + = D.getminutes () + C;　　　　 s + = D.getseconds () + C;　　　　 s + = D.getmilliseconds ();　　　 return (s); }

(4) getminutes function: Returns the "minute" part of the date with a value of 0~59. See the example above.

(5) getMonth function: Returns the month portion of the date with a value of 0~11. 0 means January, 2 means March, ..., and 11 means December. See the previous example.

(6) getseconds function: Returns the "seconds" portion of the date, with a value of 0~59. See the previous example.

(7) getTime function: Returns the system time.

function Gettimetest () {var d, s, t;　　　　 var Minmilli = 1000 * 60;　　　　 var Hrmilli = Minmilli *60;　　　　 var Dymilli = Hrmilli *24;　　　　 D = new Date ();　　　　 t = D.gettime ();　　　　 s = "It ' s been" s + = Math.Round (T/dymilli) + "days since 1/1/70";　　　 return (s); }

(8) gettimezoneoffset function: Returns the difference in this area (local time versus GMT Greenwich Mean Time) in minutes.

function Tzdemo () {var d, tz, s = "thecurrent local time is";　　　　 D = new Date ();　　　　 TZ =d.gettimezoneoffset ();　　　　 if (TZ < 0) S + = tz/60 + "hours before GMT";　　　　 else if (TZ = = 0) s + = "GMT";　　　　 else S + = tz/60 + "hours after GMT";　　　 return (s); }

(9) getYear function: Returns the "year" part of the date. The return value is based on a 1900-year base, for example, 1999 is 99. There is an example above.

(10) Parse function: Returns the number of milliseconds (local time) that was counted from zero January 1, 1970.

　　　

function Gettimetest (testdate) {var d, s, t;　　　　 var Minmilli = 1000 * 60;　　　　 var Hrmilli = Minmilli *60;　　　　 var Dymilli = Hrmilli *24;　　　　 D = new Date ();　　　　 t = Date.parse (testdate);　　　　 s = "There is" s +=math.round (Math.Abs (T/dymilli)) + "Days" s + = "between" + TestDate + "and 1/1/70";　　　 return (s); }

(11) setDate function: Sets the day of the date section with a value of 0~31.

(12) sethours function: Sets the "hour" portion of the date, and the value is 0~23.

(13) setminutes function: Sets the "minute" portion of the date, and the value is 0~59.

(14) setmonth function: Sets the month portion of the date, and the value is 0~11. 0 of them represent January, ..., 11 means December.

(15) setseconds Function: Sets the date's "Seconds" section with a value of 0~59.

(16) settime function: Set the time. The time value is the number of milliseconds since January 1, 1970 when the integer count is zero.

(17) setyear function: The "Year" section of the set date.

(18) togmtstring Function: Converts the date into a string that is GMT Greenwich Standard Time.

(19) setlocalestring Function: Converts the date into a string, for local time.

(20) UTC function: Returns the number of milliseconds from January 1, 1970 to the full count, measured in GMT Greenwich Mean time.

(21) toString Function: Converts a Date object to a string, using local time

(22) valueOf function: Returns the number of milliseconds from January 1, 1970 when the integer is counted.

The date function of JavaScript