JSFiddle - React, Tailwind, and code Playground

by alexandroppolus

HTML

<!DOCTYPE HTML>

<html>

<head>
  <title>Untitled</title>

</head>

<body>

<canvas id="canvas" width="600" height="400" style="border:1px solid #d3d3d3;"></canvas>

<script>
var img = new Image;
img.src = "https://mdn.mozillademos.org/files/5397/rhino.jpg";
img.onload = function() {
  draw(this);
};

function grad(ctx, x, y) {
	var grd = ctx.createRadialGradient(x, y, 5, x, y, 100);
  grd.addColorStop(0, "red");
  grd.addColorStop(1, "transparent");
  ctx.fillStyle = grd;
  ctx.fillRect(0, 0, 600, 400);
}

function draw(img) {
  var canvas = document.getElementById("canvas");
  var ctx = canvas.getContext("2d");
  //ctx.fillStyle = "black";
  //ctx.fillRect(0, 0, 600, 400);
  //ctx.globalCompositeOperation = 'destination-out';
  grad(ctx, 250, 200);
  grad(ctx, 350, 240);
  //ctx.drawImage(img, 0, 0, 600, 400);
};
</script>
</body>

</html>