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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');
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date.setFullYear(date.getFullYear() - 2); // subtracted 2 years from existing date
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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:
date
from 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 => {
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const result = new Date(date);
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result.setFullYear(result.getFullYear() - years);
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return result;
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};
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// Usage example:
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const date: Date = new Date('2021-06-30');
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const newDate = subtractYears(date, 2); // subtracted 2 years from existing date
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console.log(newDate.toISOString()); // 2019-06-30T00:00:00.000Z
Output:
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2019-06-30T00:00:00.000Z