How to add days to Date?

date, javascript

Solution

You can create one with:-

Date.prototype.addDays = function(days) {
    var date = new Date(this.valueOf());
    date.setDate(date.getDate() + days);
    return date;
}

var date = new Date();

console.log(date.addDays(5));

This takes care of automatically incrementing the month if necessary. For example:

8/31 + 1 day will become 9/1.

The problem with using `setDate` directly is that it's a mutator and that sort of thing is best avoided. ECMA saw fit to treat `Date` as a mutable class rather than an immutable structure.

Problem

How to add days to current `Date` using JavaScript? Does JavaScript have a built in function like .NET's `AddDay()`?

Original source

Related problems