JavaScript Functions Course (How To)

Create Reusable Code with Functions

Functions are at the heart of JavaScript. They let you write code that you can quickly use again and again.

• Introducing Functions in JavaScript

  4:08

• Introducing Functions Review

  5 questions

• Create and Call a Function

  4:57

• Creating a Function

  3 objectives

• Return a Value from a Function

  4:32

• Return a Value from a Function

  3 objectives

• Using Multiple return Statements

  6:58

• Function Return Values Review

  5 questions

Pass Information Into Functions

Functions often need specific information to perform a task. In addition to getting information from a function, you can also send information to a function to change how that function works.

• Function Parameters and Arguments

  4:48

• Pass an Argument to a Function

  3 objectives

• Pass Multiple Arguments to a Function

  4:32

• Parameters and Arguments Review

  5 questions

• Create a max() Function

  2 objectives

• Variable Scope

  7:01

• Function Declarations vs. Function Expressions

  4:29

• Scope and Function Expressions Review

  7 questions

Arrow Functions

Learn how arrow functions provide a more concise syntax for writing functions.

• Create Functions Using Arrow Syntax

  4:34

• instruction

  Concise Arrow Function Syntax

• Arrow Functions Review

  5 questions

• Default Function Parameters

  5:11

• Create an Arrow Function

  1 objective

• instruction

  Descriptive Comments for Functions

• Function Challenge

  1:24

• Function Challenge Solution

  4:28

• Testing for Number Arguments

  4:02

• JavaScript Functions Review

  6 questions