Creating a countdown timer for Independence Day with a background transition using HTML, CSS, and JavaScript for Day-16 task assigned by the GUVI Zen class.

Add a description, image, and links to the callback-hell topic page so that developers can more easily learn about it.

18 February, 2014. It was a Tuesday. One of the first things that you’ll hear about Node.js is that it’s async and it uses callbacks everywhere. In some ways this makes Node.js more complex than your ...