const choices = {
    choice0: false,
    choice1: false,
    choice2: false
};

const getRandomChoice = (max) => {
    return Math.floor(Math.random() * max);
}

const setTrue = () => {
    let randValue = getRandomChoice(3);
    let key = `choice${randValue}`
    choices[key] = true;
}

setTrue();

// let userChoice = prompt("Quelle porte choisissez-vous ? 1, 2 ou 3 ? ", 2);

if