EN
JavaScript - subtract days from date
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In this article, we would like to show you how to subtract days from date in JavaScript.
Quick solution:
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const date = new Date('2021-06-30');2
date.setDate(date.getDate() - 2); // subtracted 2 days from existing date3
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console.log(date.toISOString()); // 2021-06-28T00:00:00.000Zor:
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const date = new Date('2021-06-30');2
const newDate = new Date(date.getTime() - 2 * (24 * 60 * 60 * 1000)); // subtracted 2 days from existing date3
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console.log(newDate.toISOString()); // 2021-06-28T00:00:00.000Z
In this example, we create a simple function that takes two arguments:
datefrom which we want to subtract some days,days- a number of days we want to subtract.
Runnable example:
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const subtractDays = (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('2021-06-30');8
let result = subtractDays(date, 3);9
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console.log(result.toISOString()); // 2021-06-27T00:00:00.000ZIn 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.subtractDays = 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('2021-06-30');8
let result = date.subtractDays(2)9
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console.log(result.toISOString()); // 2021-06-28T00:00:00.000Z