Action in JS

Why use functions?

• makes our code reusable
• allows us to compartmentalise our code
• allows us to work asynchronously (meaning we have more than one function operating at the same time)

what are the three sources of functions?

• create our functions ourselves (declare them)
• inbuilt methods that we can access on any js file (forEach, sum, reduce, filter)
• imported functions (such as jest from npm)

different ways to write a function

• function keyword use
• es6 arrow functions

recursion and debugging

• Recursion: when the function calls itself

publishing an npm package (Jaden Case Strings)

We now know how to use array methods but what about number and string methods?