JSFiddle - React, Tailwind, and code Playground

JavaScript

var i;
var dist = 0;
var max = Math.pow(2,32);
var buf1 = new ArrayBuffer(1024);
var x = new Uint32Array(buf1);
for (i = 0; i < 256; ++i) {
    x[i] = Math.random()*max;
}

var buf2 = new ArrayBuffer(1024);
var y = new Uint32Array(buf2);
for (i = 0; i < 256; ++i) {
    y[i] = Math.random()*max
}

console.time('Uint32Array');
for (var j = 0; j < 1000000; ++j) {
    for (i = 0; i < 256; ++i) {
        dist += y[i]^x[i];
    }
}
console.timeEnd('Uint32Array');