javascript-operators-and-expressions

Question 1

What data type is returned by an arithmetic operation?

Answer 1

Number.

Question 2

What is string concatenation?

Answer 2

When two strings are combined.

Question 3

What purpose(s) does the + plus operator serve in JavaScript?

Answer 3

Add numbers or concatenate strings.

Question 4

What data type is returned by comparing two values (, ===, etc)?

Answer 4

Boolean (true of false).

Question 5

What does the += “plus-equals” operator do?

Answer 5

It adds the value of the right operand to the variable and assigns the result of the variable.