JSFiddle - React, Tailwind, and code Playground

by LyndseyB

JavaScript

const num = 20;
const primeNumbers = [];

let i = 1;

const isPrime = (num) => {
	for(let i = 2; i < num; i++) {
  	if (num % i === 0) return true;
  }
  return false;
}

while (i < num) {
	if (isPrime(i)) {
  	primeNumbers.push(i);
  }
	i++;
}