JSFiddle - React, Tailwind, and code Playground

JavaScript

function rotateImages() {
    setInterval("startRotator();", 7000);
}

var counter = 0;

function startRotator() {
    var images = ["images/finance1.jpg", "images/finance2.jpg", "images/finance3.jpg", "images/finance4.jpg", "images/finance5.jpg", "images/finance6.jpg"];

    if (counter >= images.length) {
        counter = 0;
    }
    var image = "url('" + images[counter] + "')";
    counter++;
    document.body.style.backgroundImage = image;
}