What is the basic knowledge required to complete this project? I have good knowledge of the following:-
1. Html
2.CSS
3.Javascript,jquery(learning).
Do I require any other technology?
Is another language or library required? Not really. I was able to build this with just HTML/CSS/Javascript, and I was originally confused about what else to use as well.
However, this is an easy enough project that you should try to incorporate React or at least Sass into it to get some practice with them. If you’re new to React, I recommend working with that as much as possible. Some of the best apps I’ve built have been done in with React!
Good luck!
[update]
In case I misunderstood your original question, you also need to include the library for marked from the library that FCC gives you. For more info, see my comment on this thread.