DC.js is a charting library built on top of D3.js and works natively with crossfilter, which is another popular JavaScript library used to explore millions of records in a short period on the client side. DC.js is a JavaScript library used to make interactive dashboards in JavaScript. This tutorial will give you a complete knowledge on the DC.js framework. This is an introductory tutorial, which covers the basics of DC.js and explains how to deal with its various modules and sub-modules.