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TypeScript - subtract years from date
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In this article, we would like to show you how to subtract years from date in TypeScript.
Quick solution:
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const date: Date = new Date('2021-06-30');2
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date.setFullYear(date.getFullYear() - 2); // subtracted 2 years from existing date4
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console.log(date.toISOString()); // 2019-06-30T00:00:00.000Z
In this example, we create a simple lambda function that takes two arguments:
datefrom which we want to subtract some years,years- a number of years we want to subtract.
Practical example:
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const subtractYears = (date: Date, years: number): Date => {2
const result = new Date(date);3
result.setFullYear(result.getFullYear() - years);4
return result;5
};6
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// Usage example:9
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const date: Date = new Date('2021-06-30');11
const newDate = subtractYears(date, 2); // subtracted 2 years from existing date12
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console.log(newDate.toISOString()); // 2019-06-30T00:00:00.000ZOutput:
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2019-06-30T00:00:00.000Z