JSFiddle - React, Tailwind, and code Playground

HTML

<script id="jquerysrc" src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js?key=test"></script>

JavaScript

$(document).ready(function() {
    var scriptsource = "";
    scriptsource = $("#jquerysrc").attr("src");
    alert(scriptsource);
});