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Function Basics

8 exercisesEasy

Functions package a sequence of steps under a name so it can be understood and run again. Declaring a function defines the behavior; calling it is what actually executes the body.

function showWelcomeMessage() {
  console.log("Welcome to Codington!");
}

showWelcomeMessage();
showWelcomeMessage();

Begin by declaring, calling, and tracing small parameter-free functions before adding inputs and outputs in the next module. Good function names describe an action and let a reader understand the larger program without inspecting every detail.

Declare a FunctionStart Call a FunctionStart Predict Function OrderStart Call a Function TwiceStart Put Several Steps in a FunctionStart Repair a Function CallStart Reuse a ReminderStart Morning RoutineStart

Next CategoryParameters and Return Values