Now that you have some grasp of React elements, we can explain React components, which are JavaScript functions or ES6 classes that accept arbitrary inputs (props) and return the React elements ...

ES6 is a priority in the roadmap to P5.js 1.0, but in the meantime you’ll have to do the conversion yourself.

Another interesting new concept in ES6 called Modules is something that JavaScript developers have been using for years. Some projects, like Webpack, let you take advantage of modularization now.