This is a concise fizzbuzz solution.

fizzbuzz.js

/**
 * This is just an example of how concise the FizzBuzz solution can be.
 * This may not be the most efficient or elegant solution in the world, but eh, it's a bit of fun! :) 
 */

// Just off load the logic to a method for the sake of ease.
// It could be a one line solution, but it's a little harder to read that way.
const print = i => (i % 3 == 0 ? 'Fizz' : '') + (i % 5 == 0 ? 'Buzz'  : '') || i;

// Now to iterate over an array with 100 elments & print the solution.
Array.from(Array(100).keys()).map(i => ++i).forEach(i => console.log(print(i)));