2 . 4 - Functions

Review

• We can output to the console with console.log()

• We can use variables to hold, manipulate, and output data

• Strings and Numbers are two different things

  • Strings can be concatenated using the `+` operator

  • We can make templates to insert values into sentences: `I am ${age} years old.`

• We can do all sorts of maths like Math.round(x) and Math.floor(Math.random() * 10)

All that in a few Lessons!

Custom Functions:

What if we want to write some code that we can run whenever we want?

Custom Functions (sometimes called "User-Defined Functions") allow us to create mini-programs or "chunks of code" that we can use to complete repetitive or specific tasks.