JS tool for scheduling a function for execution multiple times at a specific interval.

burst-timeout.js

/* Author: Didrik Nordström, [email protected] */

/**
 * Schedule a function for execution multiple times at a specific interval.
 * Uses setTimeout so remember to not use it for high precision timing over
 * long durations.
 *
 * @param timeout Duration in ms from now to first call
 * @param count Number of calls
 * @param interval Duration in ms between calls
 * @param fn(i) Function to call
 *   i Index of the call, between 0 and count-1
 */
function burstTimeout(timeout, count, interval, fn) {
  for (var i = 0; i < count; i++) {
    (function(i) { // Self invoking fn to preserve i in scope
      setTimeout(function() {
        fn(i);
      }, timeout + i * interval);
    })(i);
  }
}