find-multiples.js

function findMultiplesOf(...nums){  
    const max = 1000, 
        matches = new Set();  
        
    for (let i = 0; i < max; i++) { 
        nums.forEach((num) => {
            if (i % num === 0) {
                matches.add(i);
            };
        });
    }
    return matches;
}