JSFiddle - React, Tailwind, and code Playground

HTML

<a href='#' onclick="alert($);alert(jQuery);">click</a>

JavaScript

if (typeof window.jQuery === "undefined") {
    var script = document.createElement('script');
    script.onload = function(){
        if (typeof Prototype !== "undefined") {
            jQuery.noConflict();
        }
    }
    script.src = 'http://code.jquery.com/jquery-latest.min.js';
    document.getElementsByTagName('head')[0].appendChild(script);   
}