const elements = ['Fire', 'Air', 'Water'];
console.log(elements.join());
// expected output: "Fire,Air,Water"
console.log(elements.join(''));
// expected output: "FireAirWater"
console.log(elements.join('-'));
// expected output: "Fire-Air-Water"
const elements = ['Fire', 'Air', 'Water'];console.log(elements.join());// expected output: "Fire,Air,Water"console.log(elements.join(''));// expected output: "FireAirWater"console.log(elements.join('-'));// expected output: "Fire-Air-Water"