allstarschh/test_canvas.html

## test_canvas.html
<!DOCTYPE html>
<html>
<head>
<title>Test if data:image/png is same origin</title>
</head>
<body>
<canvas id="canvas" class="output" width="100" height="50">

<script>
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#000';

var img = new Image();
var data = canvas.toDataURL('image/png');
img.onload = function () {
  console.log("img onload");
  ctx.drawImage(img, 0, 0);
  var pixel = ctx.getImageData(0, 0, 1, 1);
  console.log("img onload exit");
};
console.log("data URL="+data+"\n");
img.src = data;
</script>
</body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>Test if data:image/png is same origin</title>
	</head>
	<body>
	<canvas id="canvas" class="output" width="100" height="50">

	<script>
	var canvas = document.getElementById('canvas');
	var ctx = canvas.getContext('2d');
	ctx.fillRect(0, 0, 100, 50);
	ctx.fillStyle = '#000';

	var img = new Image();
	var data = canvas.toDataURL('image/png');
	img.onload = function () {
	console.log("img onload");
	ctx.drawImage(img, 0, 0);
	var pixel = ctx.getImageData(0, 0, 1, 1);
	console.log("img onload exit");
	};
	console.log("data URL="+data+"\n");
	img.src = data;
	</script>
	</body>
	</html>