How to develop an IO game?

Question

Hello everyone! I want to create a web online game like agar.io and slither.io. I don't know much about web development and I don't really know how it works.. I wanna start learning all of that stuff so I can create web games. Anyone here to explain?

Answer 1

ofcourse you re right honey:)

Answer 2

hi.u can do it with html5 and css3 or js or svg

Answer 3

Thank you very much!
Another question: is it costs money to upload my game to an io hosting website?