text: for(var i = 0;i<document.querySelectorAll(".drum").length;i++){
  document.querySelectorAll(".drum")[i].addEventListener("click", handleClick);
  
  function handleClick() {
    var buttonInnerHTML = this.innerHTML;
  
    makeSound(buttonInnerHTML);
    buttonAnnimation(buttonInnerHTML);
  }
  }
  
  document.addEventListener("keypress", function(event){
    makeSound(event.key);
    buttonAnnimation(event.key);
  });
  function makeSound(key) {
    switch (key){
      case "w":
          var tom1 = new Audio('sounds/tom-1.mp3');
          tom1.play();
      break;
  
      case "a":
          var tom2 = new Audio('sounds/tom-2.mp3');
          tom2.play();
      break;
  
      case "s":
          var tom3 = new Audio('sounds/tom-3.mp3');
          tom3.play();
      break;
  
      case "d":
          var tom4 = new Audio('sounds/tom-4.mp3');
          tom4.play();
      break;
  
      case "j":
          var snare = new Audio('sounds/snare.mp3');
          snare.play();
      break;
  
      case "k":
          var crash = new Audio('sounds/crash.mp3');
          crash.play();
      break;
  
      case "l":
          var kick = new Audio('sounds/kick-bass.mp3');
          kick.play();
      break;
  
      default:console.log(buttonInnerHTML);
    }
  }
  
  function buttonAnnimation(currentKey){
    var activeButton = document.querySelector("." + currentKey);
    activeButton.classList.add("pressed");
  
    setTimeout(function(){
      activeButton.classList.remove("pressed");
    },0.1);
  }
  