Review

• HTML is the front-end language that describes how a document should look

  • CSS is the makeup that makes an HTML document prettier

• JavaScript is the back-end language that allows us to write instructions to the computer

  • We compartmentalize our code into smaller mini-programs called functions to help with organization and reduce repetition of code

HTML can call JavaScript Functions and JavaScript can modify HTML!

• We can make HTML Elements react to user input (clicks, mouse movements, keyboard presses, etc)

  • When a user interacts with an HTML element, this creates an Event

  • We can tell JavaScript to listen for an event by using Event Listeners (sounds simple enough, right?)