JavaScript Program to Check Prime Number

// program to check if a number is prime or not // take input from the user const number = parseInt(prompt("Enter a positive number: ")); let isPrime = true; // check if number is equal to 1 if (number === 1) { console.log("1 is neither prime nor composite number."); } // check if number is greater than 1 else if (number > 1) { // looping through 2 to number-1 for (let i = 2; i < number; i++) { if (number % i == 0) { isPrime = false; break; } } if (isPrime) { console.log(`${number} is a prime number`); } else { console.log(`${number} is a not prime number`); } } // check if number is less than 1 else { console.log("The number is not a prime number."); }