notes/HTML5 Load local file on to canvas with jQuery-LrUywYVw.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Load Image</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
$(document).ready(function(){
$("#uploadimage").on("change", draw);
});
function draw(ev) {
console.log(ev);
var ctx = $('#canvas')[0].getContext('2d'),
img = new Image(),
f = $("#uploadimage")[0].files[0],
url = window.URL || window.webkitURL,
src = url.createObjectURL(f);
img.src = src;
img.onload = function() {
ctx.drawImage(img, 0, 0);
url.revokeObjectURL(src);
}
}
</script>
</head>
<body>
<div class="container">
<input type='file' name='img' size='65' id='uploadimage' />
<canvas id="canvas" width="500" height="500"></canvas>
</div>
</body>
</html>
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