CODEWITHSUNDEEP
javascript
Sanjay Singh
Sanjay Singh

Reputation: 362

How to find date difference from Date in string format in javascript

I have two dates as From and To in String format as 1/11/2015 and 15/11/2015. What are the ways to find the difference in days between two dates. Remember the dates are in String format not in JavaScript Date format.

Upvotes: 1

Views: 1447

Answers (4)

Shrabanee
Shrabanee

Reputation: 2766

You can use moment js to achieve your desired result.

var fromDt = new Date("11/1/2015"), toDt = new Date("11/15/2015");
var moment = require('moment');

Convert into millisecond.

var fromDate = moment(fromDt).format('X') * 60000;
var toDate = moment(toDt).format('X') * 60000;

Get the difference.

var diffMs = toDate - fromDate;

Now you can use the desired format you want.

NOTE :- diffMs will give you difference in milliseconds. You can convert it to know the difference.

Hope this will help.

Upvotes: 0

Netham
Netham

Reputation: 1178

Below is the function for mmddyy format of date

function dateDiff(d1,d2){
    var date1 = new Date(d1)
    var date2 = new Date(d2);
    var timeDiff = Math.abs(date2.getTime() - date1.getTime());
    var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24));
    return(diffDays);
}

The Date function is capable of handling strings. The string should be in a format recognized by the Date.parse() method (IETF-compliant RFC 2822 timestamps and also a version of ISO8601).

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

Upvotes: 0

Joe Thomas
Joe Thomas

Reputation: 6397

It's actually pretty simple in JS.

  1. Convert the Strings into Unix Timestamps
  2. Get the difference
  3. Convert the difference into days

i.e. in JS

//Since your dates are in DD/MM/YY we have to modify it a bit
var d1 = '1/11/2015'.split('/')
var d2 = '15/11/2015'.split('/')

//This is our converted format that is MM/DD/YY
var normd1 = [d1[1],d1[0],d1[2]].join('/')
var normd2 = [d2[1],d2[0],d2[2]].join('/')

//Get the difference in ms and use the absolute value incase you switched the days
var diff = Math.abs(Date.parse(norm1) - Date.parse(normd2))

//convert the difference to days
var days = diff/(1000*60*60*24 )

Date.parse converts a date string into a millisecond UNIX timestamp, i.e. number of milliseconds since Jan 1, 1970.

Upvotes: 0

gurvinder372
gurvinder372

Reputation: 68393

You can convert them to dates using

function convertToDate(str)
{
   var dateArr = str.split("/");
   return new Date(dateArr[2], dateArr[1], dateArr[0])
}
var date1 = convertToDate("1/11/2015");
var date2 = convertToDate("15/11/2015");
var diffInDays = (date1.getTime() - date2.getTime())/ (1000*60*60*24);

alert( Math.ceil( Math.abs( diffInDays ) ) );

getTime returns number of milliseconds since 1970, so you need to convert them to days by dividing it with 24 * 60 *60 * 1000 ()

Upvotes: 4

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