Objective

By the end of this lesson, you will understand the roles of functions in JavaScript and be able to apply them in your own code.

Materials and Prep

• Computer with a code editor installed
• Internet access
• Prior knowledge of basic JavaScript concepts such as variables and conditional statements

Activities

• Activity 1: Code Along - Writing and Calling Functions

In this activity, you will learn how to write and call functions in JavaScript. Follow along with the instructor as they demonstrate the process step by step. Try to write your own functions and test them out.

• Activity 2: Function Exploration

Explore different types of functions in JavaScript, such as functions with parameters, return values, and anonymous functions. Experiment with different variations and observe the behavior of the functions.

• Activity 3: Function Challenges

Take on some coding challenges that involve using functions. Solve problems by breaking them down into smaller tasks and utilizing the power of functions to accomplish them.

Talking Points

• Functions are like reusable blocks of code that perform specific tasks.
• "Functions allow us to organize our code and make it more modular."
• Functions can be defined using the function keyword followed by a name, parentheses for parameters (if any), and curly braces for the function body.
• "To use a function, we need to call it by its name followed by parentheses, and provide any necessary arguments."
• Functions can have parameters, which act as placeholders for values that will be passed in when the function is called.
• "Parameters allow us to make our functions more flexible and reusable."
• Functions can also return values, which can be used in other parts of our code.
• "Return values help us get output from a function and use it elsewhere."
• Functions can be assigned to variables, allowing them to be passed around and used as arguments in other functions.
• "Assigning functions to variables gives us more flexibility in manipulating and working with functions."
• Anonymous functions are functions without a name and can be used directly as arguments or assigned to variables.
• "Anonymous functions are useful when we need a function for a specific purpose without the need for a named function."