Functions with Parameters: Passing Information

Learning Objectives Define a function that accepts at least one parameter. Explain the difference between a parameter and an argument. Call a function and pass a specific value (argument) to it. Write a function that uses a parameter to change its behavior, like drawing a square of a specific size. Create a function that accepts multiple parameters in the correct order. Debug simple errors related to missing or incorrect arguments in a function call. Have you ever ordered a pizza? 🍕 You don't just say 'I want a pizza,' you give specific information like 'a large pizza with pepperoni!' How do we give specific instructions to our computer programs? In this lesson, you'll learn how to create super-smart functions that can accept specific instruct...

TermDefinitionExample FunctionA named block of code that performs a specific task. You can 'call' it by name whenever you need it.A function named `sayHello` that prints 'Hello!' to the screen. ParameterA special variable that acts as a placeholder inside a function definition. It's like a blank space in a recipe waiting for an ingredient.In `FUNCTION greet(name)`, the parameter is `name`. It's waiting to be told a specific name. ArgumentThe actual value or information you 'pass' to a function when you call it. It fills in the blank left by the parameter.When you call `greet('Alex')`, the argument is the string 'Alex'. It fills the `name` parameter. Function CallThe line of code that tells the program to run a function.`drawCircl...

Defining a Function with a Parameter FUNCTION functionName(parameterName) { // code that uses parameterName } When you create a function, you declare its parameters in the parentheses. This creates a placeholder variable that can only be used inside that function. Calling a Function with an Argument functionName(argumentValue); To run the function, you call it by its name and put the actual value (the argument) you want to use inside the parentheses. This value gets assigned to the parameter inside the function. Multiple Parameters Pattern FUNCTION functionName(param1, param2) { ... } CALL functionName(arg1, arg2); Functions can have multiple parameters, separated by commas. When you call the function, you must provide arguments for each parameter, and the order...