<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <h2>learning canvas</h2> <canvas id="myCanvas" width="578" height="200"></canvas> <script> var canvas = document.getElementById('myCanvas'); var context = canvas.getContext('2d'); var centerX = canvas.width / 2; var centerY = canvas.height / 2; var radius = 70; context.beginPath(); context.arc(centerX, centerY, radius, 0, 2 * Math.PI, false); context.fillStyle = 'green'; context.fill(); context.lineWidth = 5; context.strokeStyle = '#003300'; context.stroke(); </script> <script> var canvas = document.getElementById('myCanvas'); var context = canvas.getContext('2d'); // do cool things with the context context.font = '40pt Calibri'; context.fillStyle = 'red'; context.fillText('Hello World!', 150, 100); </script> </div> </div>

body { margin: 0px; padding: 0px; }