Javascript Practice 43: JS Hero - Even numbers

 

Question: 

Write a function isEven that checks if a passed number is even. If the given number is even, true should be returned, otherwise false.

Example: isEven(2) should return true and isEven(3) should return false.

Answer: 

function isEven (n) {

return n % 2 === 0;

}; 

> declare a function isEven

> it has 1 parameter

> return statement is: n % 2 === 0

> % = modulo operator gives the remainder obtained by dividing two numbers 

> ∴ if n is divided by 2 and the remainder is 0 then n is an even number

> we shall get true if n is even and false if n is odd by using the modulo operator and the strict equality operator