Web - 5 - 1

const WIDTH = 720
const HEIGHT = 480

const canvas = document.querySelector('#game')
canvas.width = WIDTH
canvas.height = HEIGHT

const ctx = canvas.getContext('2d')

const backdrop = new Image()
backdrop.src = 'images/backdrop.png'

backdrop.addEventListener('load', () => {
  drawImages()
})

function drawImages() {
  ctx.drawImage(backdrop, 0, 0, WIDTH, HEIGHT)
}