• DOM = Document Object Model (manipulate content of html document -> interacting with the webpage) ...document (html) is just the webpage ...objects are elements (e.g. ,
  , etc.. these are all objects) ...model = tree kind structure, how
• nodes: all tags are objects, all objects are also nodes. Also elements of the object like attributes or the plain text are nodes. Nodes can be manipulated as well.
• virtual DOM

What is React and why using it?

• javascript library created by Facebook
• its fast and scalable
• very popular
• better readible (is this even true?)

arrow functions
classes
let
const