1 var canvas = document.getElementById('tutorial');

     2 

     3   // Make sure we don't execute when canvas isn't supported

     4   if (canvas.getContext){

     5 

     6     // use getContext to use the canvas for drawing

     7     var ctx = canvas.getContext('2d');

     8 

     9     // Draw shapes

    10 

    11     ctx.beginPath();

    12     ctx.moveTo(75,25);

    13     ctx.quadraticCurveTo(25,25,25,62.5);

    14     ctx.quadraticCurveTo(25,100,50,100);

    15     ctx.quadraticCurveTo(50,120,30,125);

    16     ctx.quadraticCurveTo(60,120,65,100);

    17     ctx.quadraticCurveTo(125,100,125,62.5);

    18     ctx.quadraticCurveTo(125,25,75,25);

    19     ctx.stroke();

    20 

    21   }