professional_javascript_for_web/ch15/2DFillRectPatternExample01.htm

<!DOCTYPE html>
<html>
 <head>
    <title>Canvas Fill Rect Pattern Example</title>
 </head>
 <body>
    <canvas id="drawing" width="200" height="200">Your browser doesn't support the canvas tag.</canvas>
    <img id="smiley" src="smile.gif" border="1" title="Image tag" />
    <script>
        window.onload = function(){
            var drawing = document.getElementById("drawing");
            
            //make sure <canvas> is completely supported
            if (drawing.getContext){
            
                var context = drawing.getContext("2d"),
                    image = document.images[0],
                    pattern = context.createPattern(image, "repeat");

                //draw a rectangle
                context.fillStyle = pattern;
                context.fillRect(10, 10, 150, 150);

            }                
        };

    </script>
    </body>
</html>