JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <!-- This works -->
    <!-- <script type="text/javascript" src="http://www.zoom.it/aaa.js"/> -->
</body>

JavaScript

function includeJS(jsFile) {
    $('body').append($('<script>').attr('type', 'text/javascript').attr('src', jsFile));
};

$(function() {
    // Doesn't seem to work - get "Cannot set property 'innerHTML' of null"
    includeJS("http://www.zoom.it/aaa.js");
});