JSFiddle - React, Tailwind, and code Playground

HTML

<img width="615" height="410" src="" />
<input type="button" value="Change" />

JavaScript

var img = 0;
var imgs = [
    'http://www.istockphoto.com/file_thumbview_approve/9958532/2/istockphoto_9958532-sun-and-clouds.jpg',
    'http://www.istockphoto.com/file_thumbview_approve/4629609/2/istockphoto_4629609-green-field.jpg'
];
$('img').attr('src',imgs[0]);
$('input[type="button"]').click(function(){
    $('img').fadeOut('slow',function(){
        $(this).attr('src',imgs[(++img)%2]).fadeIn('slow');
    });
});