Javascript-operators-and-expressions

Question 1

What data type is returned by an arithmetic operation?

Answer 1

Arithmetic operators take numerical values (either literals or variables) as their operands and return a single numerical value

Question 2

What is string concatenation?

Answer 2

+ sign to join 2 variables. Concatenate just means “join together”. To join together strings in JavaScript you can use a different type of string, called a template literal.

Question 3

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

Answer 3

Concatenate and addition

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

The addition assignment operator (+=) adds the value of the right operand to a variable and assigns the result to the variable.