javascript-operators-and-expressions

Question 1

What data type is returned by an arithmetic operation?

Answer 1

return a single numerical value.

Question 2

What is string concatenation?

Answer 2

Joining together strings in JavaScript using the + operator.

Question 3

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

Answer 3

Concatenation and addition.

Question 4

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

Answer 4

A Boolean value.

Question 5

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

Answer 5

Addition assignment.

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