JSFiddle - React, Tailwind, and code Playground

HTML

<img id="imgDino" src="http://bestuff.com/images/images_of_stuff/64x64crop/t-rex-51807.jpg?1176587870" />

JavaScript

$(document).ready(function()
{
    $("#imgDino").hover(
        function()
        {
            $(this).attr("src", "http://www.sitevip.net/gifs/dinosaur/2348_animado.gif");
        },
        function()
        {
            $(this).attr("src", "http://bestuff.com/images/images_of_stuff/64x64crop/t-rex-51807.jpg?1176587870");
        }                         
    );                  
});