C32

window.onload = function () {
    var drawingSurface = document.getElementById("drawingSurface");
    var ctxt = drawingSurface.getContext("2d");
    ctxt.lineWidth = 3;
    ctxt.rect(150, 150, 250, 175);
    var gradient = ctxt.createRadialGradient(200, 200,5, 250, 250,100);
    gradient.addColorStop(0, "Red");
    gradient.addColorStop(.5, "Orange");
    gradient.addColorStop(1, "Blue");
    ctxt.fillStyle = gradient;
    ctxt.fill();ctxt.stroke();
}