javascript Array.some和Array.every

Posted 2021-05-04

  const heroes = [
    {
        name: 'Black Widow',
        superHero: true,
        team: 'Avengers'
    },
    {
        name: 'Thor',
        superHero: true,
        team: 'Avengers'
    },
    {
        name: 'Captain America',
        superHero: true,
        team: 'Avengers'
    },
    {
        name: 'Mr. Bean',
        superHero: false,
        team: 'Great-Britain'
    },
    {
        name: 'Batman',
        superHero: true,
        team: 'Justice League'
    },
]
// Do we have a hero in the array?
const heroesPresent = heroes.some(hero => hero.superHero === true);
console.log(heroesPresent);

// Are all these people heroes?
const allHeroes = heroes.every(hero => hero.superHero === true);
console.log(allHeroes);