Import a few necessary packages into your browser's instance of any webpage

Insert jQuery, Underscore, and D3

// add jquery:
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js';
document.head.appendChild(script);

// add underscore:
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore-min.js';
document.head.appendChild(script);

// add d3:
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = 'https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js';
document.head.appendChild(script);