Lecture_14_Functions in JavaScript

• Objective: Learn how to create and use functions, including parameterized functions and return values.

Lesson Breakdown

1. Introduction to Functions (15 mins)

   • What are functions and why are they useful?

   • Syntax for defining and calling a function.

2. Function Parameters and Return Values (20 mins)

   • Demonstrate how to pass parameters and use return values.

   • Show the difference between functions with and without return values.

3. Programming Activity (20 mins)

   • Task: Create a function that calculates the square of a number and returns the result.

   • Challenge: Write a function that takes two parameters (length and width) and returns the area of a rectangle.

4. Anonymous Functions and Arrow Functions (15 mins)

   • Introduce anonymous functions and arrow functions.

   • Compare them to regular function definitions.

5. Best Practices for Functions (10 mins)

   • Discuss naming conventions, reusability, and modular code.