Canvas - draw images

http://our.componentone.com/2012/06/26/html5-canvas-for-the-noobpart-1/?utm_medium=twitter&utm_source=twitterfeed

HTML

<canvas id="game" width="100" height="100"></canvas>

JavaScript

var gameCanvas = document.getElementById("game");
gameCanvas.width = window.innerWidth;
gameCanvas.height = window.innerHeight;
var ctx = gameCanvas.getContext('2d');

var img = new Image();
img.src = 'image.png';

for (var x = 0; x < gameCanvas.width; x += 64) {
     for (var y = 0; y < gameCanvas.height; y += 64) {
          ctx.drawImage(img, x, y);
     }
}