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

combining 2 strings by using + operator into 1 string

Question 3

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

Answer 3

concatenation (for string) and addition –> when adding string + number it becomes a string!!

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

whatever is on the right side is added to the current value and is being re-assigned into the variable.