let index = 1;

let button;

​

//preload sounds

function preload() {

  for (let s = 1; s <=10; s++) sfx[s] = loadSound("sfx" + s + ".mp3");

}

​

function setup() {

  createCanvas(400, 400);

  button = createButton("play sequence");

  button.mousePressed(sfxPlay);

}

​

function draw() {

  background(220);

}

​

function sfxPlay() {

  //check if sound is not playing

  if (!sfx[index].isPlaying()) {

    sfx[index].play();              //play sound at current index

    button.html('Pause')

  } else {

    sfx[index].pause();             //pause sound at current index

    button.html(`Play sfx${index}`) 

    index++;                         //play sound at next index

    if (index > 10) {

      index = 1;

​

    }

  }

}

​