JavaScript program to find the LCM of two numbers:
let firstNumber = parseInt(prompt("Enter the first number:"));
let secondNumber = parseInt(prompt("Enter the second number:"));
let gcd = 1;
let max = Math.max(firstNumber, secondNumber);
for (let i = 2; i <= max; i++) {
if (firstNumber % i === 0 && secondNumber % i === 0) {
gcd = i;
}
}
let lcm = (firstNumber * secondNumber) / gcd;
console.log("The LCM of the numbers is: " + lcm);