Javascript Operators and Expressions

Question 1

What data type is returned by arithmetic operations?

Answer 1

Numbers

Question 2

What is string concatentation?

Answer 2

Combining multiple strings together

Question 3

What purpose(s) does the + sign operator serve in javascript?

Answer 3

Mathematical addition or 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

Performs addition which could either be numeric or concatenation on the two operands and then assigns the result to the left of the operand