Get dates in between two dates with JavaScript.

getdates.js

// Returns an array of dates between the two dates
var getDates = function(startDate, endDate) {
  var dates = [],
      currentDate = startDate,
      addDays = function(days) {
        var date = new Date(this.valueOf());
        date.setDate(date.getDate() + days);
        return date;
      };
  while (currentDate <= endDate) {
    dates.push(currentDate);
    currentDate = addDays.call(currentDate, 1);
  }
  return dates;
};

// Usage
var dates = getDates(new Date(2013,10,22), new Date(2013,11,25));                                                                                                           
dates.forEach(function(date) {
  console.log(date);
});

Very good, solve my problem.

Worked perfectly, thanks!

I made something more generic

it uses date-fns and does not mutate the array

import { addDays, addMonths, differenceInDays, differenceInMonths  } from 'date-fns';

import { PERIOD } from './PeriodEnumType';

export function dateRange(startDate, endDate, interval) {
  if (interval === PERIOD.DAY) {
    const days = differenceInDays(endDate, startDate);

    return [...Array(days+1).keys()].map((i) => addDays(startDate, i));
  }

  if (interval === PERIOD.MONTH) {
    const months = differenceInMonths(endDate, startDate);

    return [...Array(months+1).keys()].map((i) => addMonths(startDate, i));
  }
}

Works pretty well.. Thank you alot!!

Here's a function to get a range of dates, split up by any key, ex. month, day, year, etc.

const moment = require('moment');

function getRangeOfDates(start, end, key, arr = [start.startOf(key)]) {
  
  if(start.isAfter(end)) throw new Error('start must precede end')
  
  const next = moment(start).add(1, key).startOf(key);
  
  
  if(next.isAfter(end, key)) return arr;
  

  return getRangeOfDates(next, end, key, arr.concat(next));
  
}

So if I wanted to get an array of months from the start of the year until a year from now, I would go:

const begin = moment().startOf('year')
const end = moment().add(1, 'year')

getRangeOfDates(begin, end, 'month');

Which would return:

[ moment("2017-01-01T00:00:00.000"),
  moment("2017-02-01T00:00:00.000"),
  moment("2017-03-01T00:00:00.000"),
  moment("2017-04-01T00:00:00.000"),
  moment("2017-05-01T00:00:00.000"),
  moment("2017-06-01T00:00:00.000"),
  moment("2017-07-01T00:00:00.000"),
  moment("2017-08-01T00:00:00.000"),
  moment("2017-09-01T00:00:00.000"),
  moment("2017-10-01T00:00:00.000"),
  moment("2017-11-01T00:00:00.000"),
  moment("2017-12-01T00:00:00.000"),
  moment("2018-01-01T00:00:00.000"),
  moment("2018-02-01T00:00:00.000"),
  moment("2018-03-01T00:00:00.000"),
  moment("2018-04-01T00:00:00.000"),
  moment("2018-05-01T00:00:00.000"),
  moment("2018-06-01T00:00:00.000"),
  moment("2018-07-01T00:00:00.000"),
  moment("2018-08-01T00:00:00.000"),
  moment("2018-09-01T00:00:00.000") ]

@miguelmota thanks

Many thanks 😍

Thank You very much

Thanks @Ben52

Thanks @Ben52

My version which strips hours, minutes, seconds etc. and does not declare an inline function:

// Returns an array of dates between the two dates
const getDatesBetween = (startDate, endDate) => {
    const dates = [];

    // Strip hours minutes seconds etc.
    let currentDate = new Date(
        startDate.getFullYear(),
        startDate.getMonth(),
        startDate.getDate()
    );

    while (currentDate <= endDate) {
        dates.push(currentDate);

        currentDate = new Date(
            currentDate.getFullYear(),
            currentDate.getMonth(),
            currentDate.getDate() + 1, // Will increase month if over range
        );
    }

    return dates;
};

// Usage
const dates = getDates(new Date(2018, 0, 30, 11, 30), new Date(2018, 2, 2, 23, 59, 59)); 

console.log(dates);

Thanks @aalexgabi, it resolved my problem 💯

Help me sir,
how to check between two date range???
Example

from date=03-07-2018
to date=13-07-2018

how to check date range between them in javascript

@sibelius can you elaborate on how you use that function? For instance, it looks like you have another file you are including. What does that look like? Thanks in advance!

import moment from 'moment';
getStandAge = startDate => { const age = moment().diff(startDate, 'months'); return isNaN(age) ? null : age; };

Please i would need help, i would like to do this using two date time picker and insert the dates in between the date time picker in a database but i dont know how to go about this in vb.net. Someone should help me please

I made something more generic

it uses date-fns and does not mutate the array

import { addDays, addMonths, differenceInDays, differenceInMonths  } from 'date-fns';

import { PERIOD } from './PeriodEnumType';

export function dateRange(startDate, endDate, interval) {
  if (interval === PERIOD.DAY) {
    const days = differenceInDays(endDate, startDate);

    return [...Array(days+1).keys()].map((i) => addDays(startDate, i));
  }

  if (interval === PERIOD.MONTH) {
    const months = differenceInMonths(endDate, startDate);

    return [...Array(months+1).keys()].map((i) => addMonths(startDate, i));
  }
}

Can u help using two date time picker and insert the dates in a database in vb.net

Worked Perfectly.... thanks :-)

Here's a function to get a range of dates, split up by any key, ex. month, day, year, etc.

const moment = require('moment');

function getRangeOfDates(start, end, key, arr = [start.startOf(key)]) {
  
  if(start.isAfter(end)) throw new Error('start must precede end')
  
  const next = moment(start).add(1, key).startOf(key);
  
  
  if(next.isAfter(end, key)) return arr;
  

  return getRangeOfDates(next, end, key, arr.concat(next));
  
}

So if I wanted to get an array of months from the start of the year until a year from now, I would go:

const begin = moment().startOf('year')
const end = moment().add(1, 'year')

getRangeOfDates(begin, end, 'month');

Which would return:

[ moment("2017-01-01T00:00:00.000"),
  moment("2017-02-01T00:00:00.000"),
  moment("2017-03-01T00:00:00.000"),
  moment("2017-04-01T00:00:00.000"),
  moment("2017-05-01T00:00:00.000"),
  moment("2017-06-01T00:00:00.000"),
  moment("2017-07-01T00:00:00.000"),
  moment("2017-08-01T00:00:00.000"),
  moment("2017-09-01T00:00:00.000"),
  moment("2017-10-01T00:00:00.000"),
  moment("2017-11-01T00:00:00.000"),
  moment("2017-12-01T00:00:00.000"),
  moment("2018-01-01T00:00:00.000"),
  moment("2018-02-01T00:00:00.000"),
  moment("2018-03-01T00:00:00.000"),
  moment("2018-04-01T00:00:00.000"),
  moment("2018-05-01T00:00:00.000"),
  moment("2018-06-01T00:00:00.000"),
  moment("2018-07-01T00:00:00.000"),
  moment("2018-08-01T00:00:00.000"),
  moment("2018-09-01T00:00:00.000") ]

Thanks a lot

It works but I have a problem with the month.
I run it like that:

var dates = getDates(new Date(2019,04,16), new Date(2019,04,17));                                                                                                           
dates.forEach(function(date) {
  console.log(date);
});

And the result is:

Thu May 16 2019 00:00:00 GMT+0300 (Israel Daylight Time)
Fri May 17 2019 00:00:00 GMT+0300 (Israel Daylight Time)

I received May instead of April, why? What am I missing?

Hi @nivduran. When using the Date constructor like that:
new Date(year, monthIndex [, day [, hours [, minutes [, seconds [, milliseconds]]]]]);
keep in mind that the monthIndex parameter is 0-based. This means that January = 0 and December = 11.
In your case, you used 4 as the monthIndex parameter, which means the fifth month of the year which is May.

Thanks @aalexgabi

How about filling missing dates inside arrays

var array=[
{date:"2016-11-17T00:00:00"}, //start
{date:"2016-11-19T00:00:00"},
{date:"2016-11-18T00:00:00"},
{date:"2016-11-21T00:00:00"},
{date:"2016-11-22T00:00:00"},
{date:"2016-11-23T00:00:00"},
{date:"2017-11-27T00:00:00"},//end
];

Actually very useful for charts that has missing data.

Very good, thank you sir!

if you are looking for specific days of the week this will give them to you granted you provide a string array, otherwise, just dont use the if statement .

import * as moment from "moment";
import * as _ from 'lodash';

getDatesOfDays(startDate: moment.Moment, endDate: moment.Moment, dayArray: string[]) {
           var range = [];
           var dayNames = ['sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday'];
        while (moment(startDate) <= moment(endDate)){
            if (dayArray.includes(dayNames[startDate.day()])) {
                range.push(startDate.clone());
            }
            startDate.add(1 , 'days');
        }
        return range;
}

https://gist.github.com/miguelmota/7905510#file-getdates-js
It's very pretty.
I solved my problem.

Node.js & ES6

get days diff between two dates and output all weekdays in between including start and end dates.
return an array of dates.

const moment = require("moment");
const getDatesDiff = (start_date, end_date, date_format = "YYYY-MM-DD") => {
  const getDateAsArray = date => {
    return moment(date.split(/\D+/), date_format);
  };
  const diff = getDateAsArray(end_date).diff(getDateAsArray(start_date), "days") + 1;
  const dates = [];
  for (let i = 0; i < diff; i++) {
    const nextDate = getDateAsArray(start_date).add(i, "day");
    const isWeekEndDay = nextDate.isoWeekday() > 5;
    if (!isWeekEndDay)
      dates.push(nextDate.format(date_format))
  }
  return dates;
};

Use:

const date_log = getDaysDiff ('2019-10-17',  '2019-10-25');
console.log(date_log);

output:

date_log = 
[ '2019-10-17',
  '2019-10-18',
  '2019-10-21',
  '2019-10-22',
  '2019-10-23',
  '2019-10-24',
  '2019-10-25'
]