How to check future date by comparing today's formatted date in javaScript?

Question

How to check future date by comparing today's formatted date in javaScript? The needed variable is commented in the below code.

var formattedDate = new Date();
var d = formattedDate.getDate();
var m =  formattedDate.getMonth();
m += 1;
var tomorrowDay = d + 1;
var y = formattedDate.getFullYear();
var todayDate = y + "-" + m + "-" + d;
var tomorrowDate = y + "-" + m + "-" + tomorrowDay;
var futureDate = ??? //Logic Needed

if (this.data) {
var Items = this.data.itemCollectionData;

for (var i = 0; i < dealItems.length; i++) {

if (Items[i].showDate == todayDate) {
Items[i].isToday = true;
} else if (Items[i].showDate == tomorrowDate) {
Items[i].isTomorrow = true;
} else if (Items[i].showDate == futureDate) {
Items[i].isFutureDate = true;
}
}
}

futureDate may be any day after tomorrow, it may be next year or next month. Tomorrow logic needs a correction too because it will not work on the last day of the month. Items[i].showDate always comes as a string in this format yyyy-mm-dd.

What is `futureDate`? The day after tomorrow? Some time next week? Next month? Next year? Also, there is a problem with your "tomorrow" logic: if the date is 31 October 2018, for example, you'll end up with `2018-10-32`, which isn't valid. You should look at [Moment](https://momentjs.com/). — Herohtar, Oct 17 '18 at 20:52
Possible duplicate of [Compare two dates with JavaScript](https://stackoverflow.com/questions/492994/compare-two-dates-with-javascript) — Herohtar, Oct 17 '18 at 20:57
futureDate may be any day after tomorrow, it may be next year or next month. Nice catch about the tomorrow logic! need a correct logic for that too. Items[i].showDate always comes as a string in this format yyyy-mm-dd. — Chris Jake, Oct 17 '18 at 20:57
Take care in spelling JavaScript. http://javascriptisnotjava.io/ — Basil Bourque, Oct 18 '18 at 00:20

score 1 · Answer 1 · answered Oct 17 '18 at 21:29

Adpated from this answer : Adding hours to Javascript Date object?

The theory is that by adding the milliseconds required onto the current date, and creating a new date from the result - days of the months / leap years should be accounted for

var numberOfDaysInFuture = 10;


var formattedDate = new Date();
var d = formattedDate.getDate();
var m = formattedDate.getMonth();
m += 1;
var y = formattedDate.getFullYear();
var todayDate = y + "-" + m + "-" + d;

// tomorrows +1 fix
var tomorrowDateObject = addDaysToDate(formattedDate, 1);
var tomorrowDate = tomorrowDateObject.getFullYear() + "-" + (tomorrowDateObject.getMonth() + 1) + "-" + tomorrowDateObject.getDate();

// create future date
var futureDateObject = addDaysToDate(formattedDate, numberOfDaysInFuture);
var futureDate = futureDateObject.getFullYear() + "-" + (futureDateObject.getMonth() + 1) + "-" + futureDateObject.getDate();

if (this.data) {
  var Items = this.data.itemCollectionData;

  for (var i = 0; i < dealItems.length; i++) {

    if (Items[i].showDate == todayDate) {
      Items[i].isToday = true;
    } else if (Items[i].showDate == tomorrowDate) {
      Items[i].isTomorrow = true;
    } else if (Items[i].showDate == futureDate) {
      Items[i].isFutureDate = true;
    }
  }
}

console.log("TODAY : " + todayDate)
console.log("TOMORROW : " + tomorrowDate)
console.log("FUTURE : " + futureDate);

// https://stackoverflow.com/questions/1050720/adding-hours-to-javascript-date-object
function addDaysToDate(date, days) {
  // would be easy enough to change to years, days.. whatever you need
  return new Date(date.getTime() + (days * 24 * 60 * 60 * 1000));
}

score 0 · Answer 2 · answered Oct 18 '18 at 14:09

var numberOfDaysInFuture = 10;


var formattedDate = new Date();
var d = formattedDate.getDate();
var m = formattedDate.getMonth();
m += 1;
var y = formattedDate.getFullYear();
var todayDate = y + "-" + m + "-" + d;

// tomorrows +1 fix
var tomorrowDateObject = addDaysToDate(formattedDate, 1);
var tomorrowDate = tomorrowDateObject.getFullYear() + "-" + (tomorrowDateObject.getMonth() + 1) + "-" + tomorrowDateObject.getDate();

// create future date
var futureDateObject = addDaysToDate(formattedDate, numberOfDaysInFuture);
var futureDate = futureDateObject.getFullYear() + "-" + (futureDateObject.getMonth() + 1) + "-" + futureDateObject.getDate();

if (this.data) {
  var Items = this.data.itemCollectionData;

  for (var i = 0; i < dealItems.length; i++) {

    if (Items[i].showDate == todayDate) {
      Items[i].isToday = true;
    } else if (Items[i].showDate == tomorrowDate) {
      Items[i].isTomorrow = true;
    } else if (Items[i].showDate == futureDate) {
      Items[i].isFutureDate = true;
    }
  }
}

console.log("TODAY : " + todayDate)
console.log("TOMORROW : " + tomorrowDate)
console.log("FUTURE : " + futureDate);

// https://stackoverflow.com/questions/1050720/adding-hours-to-javascript-date-object
function addDaysToDate(date, days) {
  // would be easy enough to change to years, days.. whatever you need
  return new Date(date.getTime() + (days * 24 * 60 * 60 * 1000));
}

How to check future date by comparing today's formatted date in javaScript?

2 Answers2