Animating canvas to infinitely animate the noise to give the appearance of movement in HTML

The putImageData() method places the image data onto the canvas. To animate canvas, we create a reusable ImageData object outside the main loop,

var ct = c.getContext("2d", {alpha: false});       // context without alpha channel.
var a = ct.createImageData(c.width, c.height);  
var buffer = new Uint32Array(a.data.buffer);  

function loop() {
   noise(ct);
   requestAnimationFrame(loop)
})()

function noise(ct) {
   var l =buffer.length - 1;
   while(l--) buffer[l] = Math.random() <0.5 ?0 : -1>>0;
   ct.putImageData(a, 0, 0);
}