๐ Topic Summary
In JavaScript, functions are reusable blocks of code that perform a specific task. Defining a function involves giving it a name, specifying its parameters (inputs), and writing the code that executes when the function is called. Calling a function means executing the code within it by using its name followed by parentheses. Understanding how to define and call functions is fundamental to writing efficient and modular JavaScript programs. Functions help you avoid repetition and make your code easier to read and maintain.
๐ Part A: Vocabulary
Match the term to its definition:
| Term |
Definition |
| 1. Function |
A. Values passed into a function when it's called. |
| 2. Parameter |
B. The act of executing a function. |
| 3. Argument |
C. A named block of code that performs a specific task. |
| 4. Return Value |
D. A placeholder variable in a function definition that receives a value. |
| 5. Calling |
E. The value that a function sends back to the calling code after it has completed. |
Click to reveal the answers
- 1-C
- 2-D
- 3-A
- 4-E
- 5-B
โ๏ธ Part B: Fill in the Blanks
Complete the following paragraph using the words: parameters, function, call, return, and define.
To use a ____________, you must first ____________ it by giving it a name and specifying what it does. When defining a function, you can specify ____________ that act as inputs. To execute the code inside a function, you ____________ it by using its name followed by parentheses. A function can also ____________ a value back to the calling code after it has finished its task.
Click to reveal the answers
To use a function, you must first define it by giving it a name and specifying what it does. When defining a function, you can specify parameters that act as inputs. To execute the code inside a function, you call it by using its name followed by parentheses. A function can also return a value back to the calling code after it has finished its task.
๐ค Part C: Critical Thinking
Why are functions important in programming, and how do they help in creating more complex programs?