Remove Seconds/ Milliseconds from Date convert to ISO String

I have a date object that I want to

1. remove the miliseconds/or set to 0
2. remove the seconds/or set to 0
3. Convert to ISO string

For example:

var date = new Date();
//Wed Mar 02 2016 16:54:13 GMT-0500 (EST)

var stringDate = moment(date).toISOString();
//2016-03-02T21:54:13.537Z

But what I really want in the end is

stringDate = '2016-03-02T21:54:00.000Z'

While this is easily solvable with plain JavaScript (see RobG's answer), I wanted to show you the Moment.js solution since you tagged your questions as "momentjs":

moment().seconds(0).milliseconds(0).toISOString();

This gives you the current datetime, without seconds or milliseconds.

Working example: http://jsbin.com/bemalapuyi/edit?html,js,output

From the docs: http://momentjs.com/docs/#/get-set/

There is no need for a library, simply set the seconds and milliseconds to zero and use the built–in toISOString method:

var d = new Date();
d.setSeconds(0,0);
document.write(d.toISOString());

Note: toISOString is not supported by IE 8 and lower, there is a pollyfil on MDN.

A non-library regex to do this:

new Date().toISOString().replace(/.\d+Z$/g, "Z");

This would simply trim down the unnecessary part. Rounding isn't expected with this.

A bit late here but now you can:

var date = new Date();

this obj has:

date.setMilliseconds(0);

and

date.setSeconds(0);

then call toISOString() as you do and you will be fine.

No moment or others deps.

Pure javascript solutions to trim off seconds and milliseconds (that is remove, not just set to 0). JSPerf says the second funcion is faster.

function getISOStringWithoutSecsAndMillisecs1(date) {
  const dateAndTime = date.toISOString().split('T')
  const time = dateAndTime[1].split(':')
  
  return dateAndTime[0]+'T'+time[0]+':'+time[1]
}

console.log(getISOStringWithoutSecsAndMillisecs1(new Date()))

function getISOStringWithoutSecsAndMillisecs2(date) {
  const dStr = date.toISOString()
  
  return dStr.substring(0, dStr.indexOf(':', dStr.indexOf(':')+1))
}

console.log(getISOStringWithoutSecsAndMillisecs2(new Date()))

This version works for me (without using an external library):

var now = new Date();
now.setSeconds(0, 0);
var stamp = now.toISOString().replace(/T/, " ").replace(/:00.000Z/, "");

produces strings like

2020-07-25 17:45

If you want local time instead, use this variant:

var now = new Date();
now.setSeconds(0, 0);
var isoNow = new Date(now.getTime() - now.getTimezoneOffset() * 60000).toISOString();
var stamp = isoNow.replace(/T/, " ").replace(/:00.000Z/, "");

You can use the startOf() method within moment.js to achieve what you want.

Here's an example:

var date = new Date();

var stringDateFull = moment(date).toISOString();
var stringDateMinuteStart = moment(date).startOf("minute").toISOString();

$("#fullDate").text(stringDateFull);
$("#startOfMinute").text(stringDateMinuteStart);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.11.2/moment.js"></script>
<p>Full date: <span id="fullDate"></span></p>
<p>Date with cleared out seconds: <span id="startOfMinute"></span></p>

We can do it using plain JS aswell but working with libraries will help you if you are working with more functionalities/checks.

You can use the moment npm module and remove the milliseconds using the split Fn.

const moment = require('moment')

const currentDate = `${moment().toISOString().split('.')[0]}Z`;

console.log(currentDate) 

Refer working example here: https://repl.it/repls/UnfinishedNormalBlock

let date = new Date();
date = new Date(date.getFullYear(), date.getMonth(), date.getDate());

I hope this works!!

Luxon could be your friend

You could set the milliseconds to 0 and then suppress the milliseconds using suppressMilliseconds with Luxon.

DateTime.now().toUTC().set({ millisecond: 0 }).toISO({
  suppressMilliseconds: true,
  includeOffset: true,
  format: 'extended',
}),

leads to e.g.

> 2022-05-06T14:17:26Z

To remove the seconds and milliseconds values this works for me:

const stringDate = moment()

// Remove milliseconds

console.log(moment.utc(stringDate).format('YYYY-MM-DDTHH:mm:ss[Z]'))

// Remove seconds and milliseconds

console.log(moment.utc(stringDate).format('YYYY-MM-DDTHH:mm[Z]'))