JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://timmywillison.com/jquery/attrhooks/jquery.js"></script>
<div><img style="display:none" width="215" height="53" alt="http://static.jquery.com/files/rocker/images/logo_jquery_215x53.gif" src=""/></div>
<div id="result"></div>

JavaScript

$(function() {
    var r = [$('img').attr('width'), $('img').attr('height'), $('img').width(), $('img').height()];

    $('#result').append(r.join(' '));
});