Question

Just like continue is used to break current iteration and proceed with the next, how can I break current iteration within setInterval() in JavaScript and proceed with the next interval without waiting?

var intervalID = window.setInterval( function() {
   if(conditionIsTrue) {
      // Break this iteration and proceed with the next
      // without waiting for 3 seconds.
   }
}, 3000 );

Answer 1

You could “simply” (or not so simply) clear the interval, and re-create it:

// run the interval function immediately, then start the interval
var restartInterval = function() {
    intervalFunction();
    intervalID = setInterval(intervalFunction, 3000 );
};

// the function to run each interval
var intervalFunction = function() {
    if(conditionIsTrue) {
      // Break this iteration and proceed with the next
      // without waiting for 3 seconds.

      clearInterval(intervalID);
      restartInterval();
   }
};

// kick-off
var intervalID = window.setInterval(intervalFunction, 3000 );

Here’s a demo/test Fiddle.