how to make a javascript game
//Javascript game template //Move player with arrow keys var canvas = document.createElement("canvas"); canvas.width = 500; canvas.height = 500; document.body.appendChild(canvas); var ctx = canvas.getContext("2d"); var player = {x: canvas.width / 2, y: canvas.height / 2, speed: 10}; var keys = []; function update() { ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.beginPath(); ctx.fillStyle = "red"; ctx.fillRect(player.x, player.y, 50, 50); if (keys[37]) player.x -= player.speed; if (keys[38]) player.y -= player.speed; if (keys[39]) player.x += player.speed; if (keys[40]) player.y += player.speed; requestAnimationFrame(update); } update(); document.onkeydown = function(e) { keys[e.keyCode] = true; } document.onkeyup = function(e) { keys[e.keyCode] = false; }