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Is the Number a Prime in javaScript?

I need a function that returns true if a number is prime and false if it's not. A prime number is any positive integer that is evenly divisible by only two divisors: 1 and itself. The first ten prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23 and 29.

JavaScript
1 Answer
Mohammad Qandeel
Answered
24

a prime number is any number greater than 1 whose only factors are 1 and itself

look to this function 

function isPrime(num){
  for(let i = num-1; i > 1; i--) {
    if(num%i === 0) return false;
  }
  return true;
}

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