1074733-1-ref.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html>

  <head>

    <meta charset="UTF-8">

    <script type="text/javascript">

      function bodyonload() {

        var canvas=document.getElementById('test');

        var ctx = canvas.getContext("2d");

        ctx.fillStyle = 'green';

        ctx.fillRect(-1, 50, 151, 50); // left at -1

        ctx.fillStyle = 'red';

        ctx.rect(-1, 100, 151, 50); // left at -1

        ctx.fill();

        ctx.fillStyle = 'blue';

        ctx.fillRect(0, 150, 150, 50); // left at 0

    </script>

  </head>

  <body onload="bodyonload();">

    <canvas id="test" width="200" height="200"></canvas>

  </body>

</html>