Modern JavaScript from the Beginning - Second Edition - Calculator Challenge

The video tutorial guides viewers through creating a calculator function in programming. The function takes three parameters: two numbers and an operator, which can be addition, subtraction, multiplication, or division. If an invalid operator is provided, the function returns an error message. The tutorial suggests using either if statements or switch statements to handle the operators. The video also includes testing the function with various inputs to ensure it works correctly.

What are the three parameters required by the calculator function?

• Two numbers and a string

• Two strings and a number

• Three numbers

• Three strings

Which statement is suggested as a good example for handling the operator in the calculator function?

• Switch statement

• While loop

• Do-while loop

• For loop

What should the calculator function return if an invalid operator is provided?

• The sum of the numbers

• The product of the numbers

• An error message

• A default value of zero

In the switch statement, what is the purpose of the 'break' keyword?

• To exit the switch block after a case is executed

• To skip the current case

• To repeat the current case

• To continue to the next case

What result should be expected when the calculator function is tested with inputs 5, 2, and '+'?

• 3

• 10

• 7

• 2.5