Make underscore and jQuery available on the page (e.g. to use in Google Chrome Dev Tools) if not violating CSP

underquerify.js

var underscore = document.createElement('script');
underscore.src = "https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js";
underscore.type = "text/javascript";
document.head.appendChild(underscore);
var jquery = document.createElement('script');
jquery.src = "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js";
jquery.type = "text/javascript";
document.head.appendChild(jquery);