📚 Topic Summary
In web design, functions are like mini-programs that perform specific tasks. To make these functions flexible, we use parameters as placeholders for values. When you actually call the function, you provide arguments, which are the real values that get plugged into those parameters. A function can also send back a result, called a return value. Finally, scope determines where in your code a variable can be accessed. Understanding these concepts is key to writing clean, organized, and reusable code!
Think of it like this: a function is a recipe (parameters are the ingredient placeholders), arguments are the actual ingredients you use, the return value is the dish you make, and scope is like knowing which kitchen tools are available in which part of the house!
🧠 Part A: Vocabulary
Match the following terms with their definitions:
| Term |
Definition |
| 1. Parameter |
A. The region of code where a variable is accessible. |
| 2. Argument |
B. A value passed to a function when it is called. |
| 3. Return Value |
C. A placeholder in a function definition that will receive a value. |
| 4. Scope |
D. The result that a function sends back after it finishes executing. |
| 5. Function |
E. A block of reusable code that performs a specific task. |
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words: scope, argument, parameter, return value, function.
A _________ is a block of code designed to perform a particular task. When defining it, you can include a __________ to accept input. When you call the function, the actual value you pass in is called the __________. The __________ of a variable determines where you can use it in your code. Finally, a function can send back a __________ to the part of the code that called it.
💡 Part C: Critical Thinking
Explain, in your own words, why understanding function scope is important for writing bug-free code. Give a short example of a situation where incorrect scope can lead to problems.