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

joining 2 strings using a plus sign

Question 3

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

Answer 3

plus can be used for addition as well as string concatenation

Question 4

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

Answer 4

Boolean

Question 5

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

Answer 5

short form to express left side variable addition or concatenation with the right side variable