TypeScript - 1 minute countdown timer

In this article, we would like to show you how to create a one-minute countdown timer in TypeScript.

In the example below, we use setTimeout() method to execute a function once the timer expires.

As setTimeout() arguments we pass:

1. makeIteration() function that prints seconds and clears the console from the previous iteration,
2. 1000 milliseconds to make setTimeout() count every second. 

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let seconds: number = 60;

​

const makeIteration = (): void => {

    console.clear();

    if (seconds > 0) {

        console.log(seconds);

        setTimeout(makeIteration, 1000); // 1 second waiting

    }

    seconds -= 1;

};

​

setTimeout(makeIteration, 1000); // 1 second waiting

1. JavaScript - 1 minute countdown timer

2. Dirask Snippets - js for loop with settimeout() example

1. setTimeout() - Web APIs | MDN