So classic problem, but having a horrible time on finding the actual cause. Typically when I see this error it's because the jQuery reference is after code requiring it, or back jQuery link, or jQuery conflict, etc... so far none of those appear to be the case. Unfortunately seeking out the solution to this problem has lead me to post after post of such cases. I'm sure my problem here is equally as simple, but over an hour of hunting, still no luck...
Edit: Additional information...
<meta charset="utf-8" />
<title>HTML5 Canvas Template</title>
/* styles here */
<canvas id="myCanvas" width="500" height="500">
<p>Canvas not supported.</p>
var canvas = $("#myCanvas").get(0);
var context = canvas.getContext("2d");
// we'll do our drawing here...
It's states that
JQuery referred URL is not correct