TypeScript - add seconds to date

In this article, we would like to show you how to add seconds to date in TypeScript.

Example reusable lambda function

In this example, we create a simple function that takes two arguments:

• date to which we want to add some seconds,
• seconds - a number of seconds we want to add.

Practical example:

const addSeconds = (date: Date, seconds: number): Date => {
    const result = new Date(date);
    result.setSeconds(seconds + result.getSeconds());
    return result;
};


// Usage example:

const date: Date = new Date('2021-08-30T23:59:59.000Z');

console.log(addSeconds(date, 2).toISOString()); // 2021-08-31T00:00:01.000Z

Output:

2021-08-31T00:00:01.000Z

Note:

As you can see, the function also handles the case of the day change.

See aslo

1. JavaScript - add seconds to date