js 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 of strings

‘Hello’ + ‘ ‘ + ‘World!’ > Hello World!

Question 3

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

Answer 3

addition operator, 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

adds (or concatenates) onto the original value