<!DOCTYPE html>
<html lang="en-US">
<body>
<canvas id="point" width="200" height="100">Your browser does not support the canvas element.
</canvas>
<script>
var canvas = document.getElementById("point");
var ctx = canvas.getContext("2d");
ctx.rect(0, 0, 150, 75);
ctx.fill();
</script>
</body>
</html>