drawImagetest.html

<!DOCTYPE HTML>
<html>
<body>

<canvas id="myCanvas" width="1024" height="768" style="border:1px solid #c3c3c3;">
Your browser does not support the canvas element.
</canvas>

<script type="text/javascript">

var c=document.getElementById("myCanvas");
var cxt=c.getContext("2d");
var img=new Image();
img.src="./images/Background1.png";
img.onload=function(){
cxt.drawImage(img,0,0);
};
</script>

</body>
</html>