Make JavaScript change background image every 5 seconds

Question

I am trying to change my background image every 5 seconds. How should I go about this?

window.onload = function () {

  function Timer() {
    window.setInterval         


        

Answer 1

you are accessing style incorrectly

window.onload = function () {

    function changeImage() {   
        var BackgroundImg=["./Img/Bg1.jpg",
            "./Img/Bg2.jpg",
            "./Img/Bg3.jpg",
            "./Img/Bg4.jpg"
        ];
        var i = Math.floor((Math.random() * 4));
        document.body.style.backgroundImage = 'url("' + BackgroundImg[i] + '")';
    }
    window.setInterval(changeImage, 5000);
}

Also, if possible (usually is) don't pass a string to window.setInterval - use as above