CODEWITHSUNDEEP
javascriptdatedatetimetime
user1993348
user1993348

Reputation:

javascript to convert an array of local dates and times to UTC in milliseconds since 1-1-1970?

given an array of dates and times in Eastern Standard Time like...

var dates = [
new Date(2015, 6, 15, 14, 00, 00),
new Date(2015, 6, 15, 18, 30, 30),
new Date(2015, 7, 30, 0, 15, 52),
new Date(2015, 9, 8, 10, 08, 38)];

How would you convert these upcoming dates to UTC in milliseconds since 1-1-1970 and save those values in a new array?

Thanks for any help.

Upvotes: 1

Views: 955

Answers (4)

Cagatay Ulubay
Cagatay Ulubay

Reputation: 2559

Iterrate the array, use date.getTime() to get the seconds from 1-1-1970 and than push it into an new array.

Fiddle: http://jsfiddle.net/h22f5rw8/

Edit

The code if JSFiddle going down or isn't reachable:

var dates = [
    new Date(2015, 6, 15, 14, 00, 00),
    new Date(2015, 6, 15, 18, 30, 30),
    new Date(2015, 7, 30, 0, 15, 52),
    new Date(2015, 9, 8, 10, 08, 38)
];

var dates_ms = [];

dates.forEach( function(datum) {
    dates_ms.push(datum.getTime());
});

console.log( dates_ms );

output: [1436961600000, 1436977830000, 1440886552000, 1444291718000]

Upvotes: 1

Chloe
Chloe

Reputation: 493

Just use the subtraction operator.

var oldDate = new Date(1970, 0, 1);
var newDates = []
for(var i = 0; i < dates.length; i++) {
    newDates.push(dates[i] - oldDate);
}

EDIT: Just realized you wanted to modify the original array EDIT: Misread the question

Upvotes: 1

A1rPun
A1rPun

Reputation: 16847

You could do something like this

var timestamps = dates.map(function(d){return +d});

Upvotes: 0

Tuan Anh Hoang-Vu
Tuan Anh Hoang-Vu

Reputation: 1995

Use Date.getTime() function of Javascript

Reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime

Upvotes: 1

Related Questions