Javascript - Date Date Formats


There are generally 4 types of JavaScript date input formats:

Type Example
ISO Date "2015-03-25" (The International Standard)
Short Date "03/25/2015"
Long Date "Mar 25 2015" or "25 Mar 2015"
Full Date "Wednesday March 25 2015"


//ISO 8601 syntax (YYYY-MM-DD) 
console.log(new Date("2015-03-25"));
//ISO Dates (Year and Month)
//ISO dates can be written without specifying the day (YYYY-MM):
console.log(new Date("2015-03"));
//ISO Dates (Only Year)
console.log(new Date("2015"));
//ISO Dates (Date-Time)
//ISO dates can be written with added hours, minutes, and seconds (YYYY-MM-DDTHH:MM:SSZ):
//Separate date and time with a capital T.
//Indicate UTC time with a capital Z.
console.log(new Date("2015-03-25T12:00:00Z"));
//to modify the time relative to UTC, remove the Z and add +HH:MM or -HH:MM instead:
//Modify the time relative to UTC by adding +HH:MM or subtraction -HH:MM to the time.
console.log(new Date("2015-03-25T12:00:00-06:00"));

//JavaScript Short Dates.
//Short dates are written with an "MM/DD/YYYY" syntax like this:
console.log(new Date("03/25/2015"));

//JavaScript Long Dates.
//Long dates are most often written with a "MMM DD YYYY" syntax like this:
console.log(new Date("Mar 25 2015"));

//Month and day can be in any order:
console.log(new Date("25 Mar 2015"));

//And, month can be written in full (January), or abbreviated (Jan):
console.log(new Date("January 25 2015"));
console.log(new Date("Jan 25 2015"));

//Commas are ignored. Names are case insensitive:

console.log(new Date("JANUARY, 25, 2015"));

//JavaScript Full Date
//JavaScript will accept date strings in "full JavaScript format":
console.log(new Date("Wed Mar 25 2015 09:56:24 GMT+0100 (W. Europe Standard Time)"));
//JavaScript will ignore errors both in the day name and in the time parentheses:
console.log(new Date("Fri Mar 25 2015 09:56:24 GMT+0100 (Tokyo Time)"));


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