javascript-operators-and-expressions

Question 1

What data type is returned by an arithmetic operation?

Answer 1

The data type that is returned by an arithmetic operation is an integer value.

Question 2

What is string concatenation?

Answer 2

Concatenation is the process of appending one string to the end of another string. You concatenate strings by using the + operator.

Question 3

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

Answer 3

The + operator is used to perform both addition and string concatenation in Javascript.

Question 4

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

Answer 4

The data type that is returned by comparing two values is a boolean (true/false statement).

Question 5

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

Answer 5

The += “plus-equals” operator adds the value on the right, to the variable on the left, and then assigns that value back into the variable on the left.