Apply the DataTables jQuery plugin to any table on a website

add-datatables.js

var options    = { class : "wikitable", idx : 0, id : "firstWikiTable" };
var dt_options = { paging: false, scrollY: 400 };
var jscript    = document.createElement("script"); jscript.src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"; document.body.appendChild(jscript);
jscript.onload = function ()
{
	var script = document.createElement("script"); script.src="https://cdn.datatables.net/1.10.6/js/jquery.dataTables.min.js"; document.body.appendChild(script);
	script.onload = function ()
	{
		var css = document.createElement("link"); css.rel="stylesheet"; css.href="https://cdn.datatables.net/1.10.6/css/jquery.dataTables.min.css"; document.body.appendChild(css);
		css.onload = function ()
		{
			var table = $("." + options.class)[options.idx];

			if (table.id)
			{
				options.id = table.id;
			}
			else
			{
				table.setAttribute("id", options.id);
			}

			var thead = table.createTHead();
			thead.appendChild($(table).find("tbody tr:first-child")[0]);
			var dtable = $("#" + options.id).dataTable(dt_options);
			console.log("BAM!");
		};
	};
};