CODEWITHSUNDEEP
javascriptdate
surazzarus
surazzarus

Reputation: 792

Get the days of the week starting from today

I am implementing a chart to display the daily data. At the moment I can only write the static data like.

data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']

How can I write a function to get this starting from current day and time.

Any help is appreciated. Thank you

Upvotes: 0

Views: 67

Answers (1)

user10139735
user10139735

Reputation:

This function here will populate an array over and over again with days Mon..Sun n times starting from the current day of the week:

function populateDateArray(n = 7) {
    var daysInAWeek = [ 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat' ];
    var returnValue = new Array(n);
    var currentDay = (new Date().getDay()); //0 = sunday
    for (var i = 0; i < n; i++) {
        returnValue[i] = daysInAWeek[(currentDay++) % 7];
    }
    return returnValue;
}

What we do is get the current day of the week by doing new Date().getDay() - this will return the date in numeric form (0 = sunday, 1 = monday.... 6 = saturday).

After this, we then iterate n times, grabbing daysInAWeek from the current day of the week + 1. This would usually cause overflow, so we will take the modulo 7 of this result which will bound the value between 0..6.

As a result, when we get to saturday it will then loop back to the start of daysInAWeek and go to sunday (and then over and over again).

Usage: var days = populateDateArray(28); //get 28 days from today

Upvotes: 3

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