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JavaScript - add days to date
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In this article, we would like to show you how to add days to date in JavaScript.
In this example, we create a simple function that takes two arguments:
dateto which we want to add some days,days- a number of days we want to add.
Runnable example:
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const addDays = (date, days) => {2
let result = new Date(date);3
result.setDate(result.getDate() + days);4
return result;5
};6
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let date = new Date('2021-08-30T23:59:59.000Z');8
let result = addDays(date, 1);9
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console.log(result.toISOString()); // 2021-08-31T23:59:59.000ZIn this example, we add a function to the Date.prototype so we can use it on any date object.
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Date.prototype.addDays = function (days) {2
let date = new Date(this.valueOf());3
date.setDate(date.getDate() + days);4
return date;5
};6
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let date = new Date('2021-08-30T23:59:59.000Z');8
let result = date.addDays(1)9
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console.log(result.toISOString()); // 2021-08-31T23:59:59.000Z