Question

How to run while loop for N seconds in Node.js

Answer 1

function sleep(seconds) {
    seconds = (+new Date) + seconds * 1000;
    while ((+new Date) < seconds);
}

let startTime = Date.now(); // Get the current time
const duration = 4000; // Duration in milliseconds (e.g., 4000ms = 4 seconds)
const endtime = startTime + duration;
  
while (startTime < endtime) {
    sleep(1); // Sleep for 1 second
    startTime = Date.now();
    console.log(new Date(startTime).toString());
}

         
 
/*
run:
 
Fri Oct 11 2024 09:57:38 GMT+0000 (Coordinated Universal Time)
Fri Oct 11 2024 09:57:39 GMT+0000 (Coordinated Universal Time)
Fri Oct 11 2024 09:57:40 GMT+0000 (Coordinated Universal Time)
Fri Oct 11 2024 09:57:41 GMT+0000 (Coordinated Universal Time)
 
*/

 

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