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JavaScript - subtract milliseconds from date
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In this article, we would like to show you how to subtract milliseconds from date in JavaScript.
Quick solution:
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let date = new Date('2021-08-30T00:00:00.000Z');2
date.setMilliseconds(date.getMilliseconds() - 5);3
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console.log(date.toISOString()); // 2021-08-29T23:59:59.995Z
In this example, we create a simple function that takes two arguments:
datefrom which we want to subtract some milliseconds,milliseconds- a number of milliseconds we want to subtract.
Runnable example:
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const subtractMilliseconds = (date, milliseconds) => {2
const result = new Date(date);3
result.setMilliseconds(result.getMilliseconds() - milliseconds);4
return result;5
};6
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let date = new Date('2021-08-30T00:00:00.000Z');8
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console.log(subtractMilliseconds(date, 5).toISOString()); // 2021-08-29T23:59:59.995ZOutput:
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2021-08-29T23:59:59.995ZIn 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.subtractMilliseconds = function (milliseconds) {2
let date = new Date(this.valueOf());3
date.setMilliseconds(date.getMilliseconds() - milliseconds);4
return date;5
};6
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let date = new Date('2021-08-30T00:00:00.000Z');8
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console.log(date.subtractMilliseconds(5).toISOString()); // 2021-08-29T23:59:59.995ZOutput:
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2021-08-29T23:59:59.995Z