JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Exercise Solution - What Are Functions in JavaScr

The video tutorial guides learners through writing a function named 'calculator' that takes three numbers as arguments and returns their product. The instructor emphasizes the flexibility in naming parameters and demonstrates the solution step-by-step, including logging the results and verifying the output. Learners are encouraged to practice and share their progress, with reassurance that mastering functions is challenging but rewarding.

What is the primary task of the 'calculator' function introduced in the exercise?

• To return the product of three numbers

• To subtract three numbers

• To divide three numbers

• To add three numbers

Which of the following is true about naming parameters in a function?

• Parameters can be named anything as long as they are used consistently

• Parameters must be named after the function

• Parameters must be named 'num1', 'num2', and 'num3'

• Parameters should always be single letters

What is the purpose of using a return statement in a function?

• To print the result to the console

• To stop the function from executing

• To send back a value from the function

• To log errors in the function

How can you verify the output of the 'calculator' function?

• By running the function multiple times

• By comparing it with a different function

• By using a calculator to multiply the numbers manually

• By checking the console for errors

What should you do if you are struggling to understand functions?

• Give up and move to the next topic

• Watch the video multiple times and practice

• Skip the exercises and read a book

• Ask someone else to do it for you