JSFiddle - React, Tailwind, and code Playground

CSS

img{display:block;width:50px}

JavaScript

var imgArr = ['http://healthystartups.com/storage/600px-MA_Route_1.png?__SQUARESPACE_CACHEVERSION=1319542839834', 'http://upload.wikimedia.org/wikipedia/commons/thumb/5/54/MA_Route_2.svg/600px-MA_Route_2.svg.png', 'http://foo.com/foo_873.jpg', 'http://3.bp.blogspot.com/-Q_owQUxNjdQ/Te3ALCmT3oI/AAAAAAAAAnk/wv9r0b0MT-g/s1600/600px-MA_Route_3.svg_.jpg', 'http://honestreviewscorner.com/wp-content/uploads/2012/10/the-number-4-in-a-circle.jpg1.png', 'http://www.thefrugalette.com/wp-content/uploads/2011/09/number-5.png'];

var count = 0;

function LoadImages(images) {
    console.log(images)
    console.log(count)
    img = images[count];
    img = new Image();
    img.src = images[count];
    
    //Between 3 and 4
    if(count == 4)
    {
        $('<iframe src="http://www.w3schools.com"></iframe>').appendTo('body');
    }
    
    
    if (img.complete || img.readyState === 4) {
        $(img).hide().appendTo('body').fadeIn(function () {
            count++;
            if (count < images.length) LoadImages(images);
            else $('body').append('<div>last line</div>')
        })

    } else {
        count++;
        LoadImages(images)
    }

}
LoadImages(imgArr);