$(window).load(function() {
var canvas = document.getElementById('myCanvas');
var context = canvas.getContext('2d');
var imageObj = new Image();
imageObj.onload = function() {
var pattern = context.createPattern(imageObj, 'repeat');
context.rect(500, 0, canvas.width, canvas.height);
context.fillStyle = pattern;
context.fill();
};
imageObj.src = 'http://www.html5canvastutorials.com/demos/assets/wood-pattern.png';
context.font = '40pt Calibri';
context.fillStyle = 'blue';
context.fillText('Hello World!', 150, 100);
context.beginPath();
context.arc(288, 300, 70, 0, Math.PI, false);
context.closePath();
context.lineWidth = 5;
context.fillStyle = 'red';
context.fill();
