sadet48 - HTML5 canvas globalcompositionoparation property

Note: The canvas tag is not supported in Internet Explorer 8 and earlier versions.

<!DOCTYPE html>
<html>
<head>
<style>
canvas {
    border: 1px solid #d3d3d3;
    margin-right: 10px;
    margin-bottom: 20px;
}
</style>
</head>
<body>

var gco = new Array();
gco.push("source-atop");
gco.push("source-in");
gco.push("source-out");
gco.push("source-over");
gco.push("destination-atop");
gco.push("destination-in");
gco.push("destination-out");
gco.push("destination-over");
gco.push("lighter");
gco.push("copy");
gco.push("xor");

var n;
for (n = 0; n < gco.length; n++) {
    document.write("<div id='p_" + n + "' style='float:left;'>" + gco[n] + ":<br>");
    var c = document.createElement("canvas");
    c.width = 120;
    c.height = 100;
    document.getElementById("p_" + n).appendChild(c);
    var ctx = c.getContext("2d");
    ctx.fillStyle = "red";
    ctx.fillRect(10, 10, 50, 50);
    ctx.globalCompositeOperation = gco[n];
    ctx.beginPath();
    ctx.fillStyle = "green";
    ctx.arc(50, 50, 30, 0, 2 * Math.PI);
    ctx.fill();
    document.write("</div>");
}

</script>

<p><strong>Note:</strong> The canvas tag is not supported in Internet
Explorer 8 and earlier versions.</p>

</body>
</html>