[Hackerrank] Solution of Between Two Sets in JavaScript

hackerrank_solution_of_between_two_sets_in_javascript.js

function getTotalX(a, b) {
    // Write your code here
    let result = 0;
    let index = 1;
    let cloneA = a.splice(1, a.length); // clone new array of a but not a[0]
    while(a[0] * index <= b[0]) {
        if(
         cloneA.every(item => (a[0] * index) % item === 0)
          &&
          b.every(item => item % (a[0] * index) === 0)
         ) {
            result++;
        }
        index++;
    }
    return result;
}

let count = 0
let na = Math.max(...a)
let mi = Math.min(...b)
for(let i=na; i<=mi ;i++){ // Loop between Arraya and Arrayb
if((a.every(e => i % e === 0)) && b.every(e => e % i === 0)){
// Check if the i(INTEGER) is Factor of Arraya & Arrayb are Factor of the i(INTEGER)
count++ // add +1 for each found integer
}
}
return count

Nice solution and easy to understand. Comments helped.

I can explain it easily.