How to count occurrences of dates in an array of date ranges: JavaScript

AshikPaul42 — Mon, 08 Jun 2020 05:12:06 +0000

I have a date-range of 01-01-2020 to 31-12-2020 and an array of date-ranges. I want the occurrence of each date in the array vs the main range.

    Eg: mainRange => 01-01-2020 to 31-12-2020

    dateRanges =[
      [01-01-2020, 03-01-2020],
      [03-01-2020, 04-01-2020],
      [03-01-2020, 06-01-2020]
    ];

    the output should be =>

    countArr = [1,1,3,2,1,1,0,0,......,0]; //array length 365

I was desparate and I had posted the same on stackoverflow too. 🥺

SOLUTION :

var range1 = new Date(2020, 0, 1),
    range2 = new Date(2020, 11, 31),
    dateRanges =[
        [new Date(2020, 0, 1), new Date(2020, 0, 3)],
        [new Date(2020, 0, 3), new Date(2020, 0, 4)],
        [new Date(2020, 0, 3), new Date(2020, 0, 6)],
    ],
    result = [];

while (range1 <= range2) {
    var count = 0;
    dateRanges.forEach(
        function(range) {
            if (range1 >= range[0] && range1 <= range[1]) {
                count++;
            }
        }
    );
    result.push(count);
    range1.setDate(range1.getDate() + 1); //+1 day
}

console.log(result);

Thank you 😍

Where do I start to become a MERN or Full stack Developer?

AshikPaul42 — Wed, 03 Jun 2020 11:20:58 +0000

I saw this video a few weeks ago and really got motivate to become a full stack developer. Thank you so much @CodingTrain and @CodingGardenCJ for this.

It just took me 4 hours(many issues) to watch and implement as shown in the video in React. Later I added a Map that marks the location of the users who visited my site. 😁

But now I am stuck. I searched for more simple full stack projects to improve, but all seem complicated and time consuming and not as simple as the video.

Please comment or DM me some links where I can start learning with similar projects and this might help others too.

Thank you😍

Forem: AshikPaul42

How to count occurrences of dates in an array of date ranges: JavaScript

Where do I start to become a MERN or Full stack Developer?