allsports.js

Le code utilise le Spread Operator, le Rest parameter ainsi que le Default Value en ES6

const address = {
    city: "Lyon",
    state: "FR",
    zip: 69001
  };

  const sportList = ['Football', 'BasketBall']
  const otherSportList = ['Boxe', 'Judo']
  const allsports = [...sportList, ...otherSportList]
 
  const display = (city, ...allsports) => {
   return "C'est à " + city + "que l'on pratique le plus : " + [...allsports]
 }
console.log(display(address.city, ...allsports));