function initiate() {
  let element = document.getElementById("canvas");
  let canvas = element.getContext("2d");

  let image = document.createElement("img");
  image.src = "images/myimage.jpg";
  image.addEventListener("load", function() {
    canvas.drawImage(image, 20, 20);
  });
}
window.addEventListener("DOMContentLoaded", initiate);