$(document).ready(function() {

  //four variables representing its button effects
  //button blue effect
  var blueButtonEffect = code here;

  var greenButtonEffect = code here;

  var redButtonEffect = code here;

  var yellowButtonEffect = code here;

  //to be used on the buttonEffects()/clickByItself()
  var arr = [blueButtonEffect, redButtonEffect, greenButtonEffect, yellowButtonEffect];
  let enabled = true;
  let times = 0;
  //makes button effects play itself randomly
  function clickByItself() {
    let random = Math.floor(Math.random() * arr.length);
    $(arr[random]).click();
    if (++times < 10) {
      setTimeout(function() { clickByItself(times); }, 1000);
    }
  }
  clickByItself();

  function turnOnTurnOff() {
    if (enabled == true) { //TRYING TO TURN ON/OFF THE FUNCTION ON BUTTON CLICK..
      $(startButton).on('click', clickByItself);
    }
    else(enabled != false) {
      $(startButton).on('click', clickByItself);
    }
  }