Question

How to create a countdown seconds timer in JavaScript

Answer 1

function countdown(seconds) {
    console.log("Total time: " + seconds + " seconds");

    let interval = setInterval(() => {
        seconds--;
        console.log("Time remaining: " + seconds + " seconds");

        if (seconds <= 0) {
            clearInterval(interval);
        }
    }, 1000);
}

let sec = 5;

countdown(sec);


    
/*
run:
     
Total time: 5 seconds
Time remaining: 4 seconds
Time remaining: 3 seconds
Time remaining: 2 seconds
Time remaining: 1 seconds
Time remaining: 0 seconds
        
*/

 

 

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Answer 2

function countdown(timeLeft) {
    console.log("Total time: " + timeLeft + " seconds");
    
    const countdown = setInterval(() => {
        if (timeLeft > 0) {
            console.log(`Time left: ${timeLeft} seconds`);
            timeLeft--;
        } else {
            console.log("Time's up!");
            clearInterval(countdown);
        }
    }, 1000); // Updates every second
}
 
let sec = 5;
 
countdown(sec);
 

/*
run:

Total time: 5 seconds
Time left: 5 seconds
Time left: 4 seconds
Time left: 3 seconds
Time left: 2 seconds
Time left: 1 seconds
Time's up!

*/

 

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