[Edit]

TypeScript - subtract years from date

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Created by:

Mariam-Barron

811

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');
​
date.setFullYear(date.getFullYear() - 2); // subtracted 2 years from existing date
​
console.log(date.toISOString()); // 2019-06-30T00:00:00.000Z

Example reusable lambda function

Edit

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