为什么Array（x）.map没有返回正确的对象？

Question

为什么Array(5).map((x, i) => ({id: i, value: 0}))返回长度为10的空数组，而[0,0,0,0,0].map((x, i) => ({id: i, value: 0}))返回具有正确对象的数组？

console.log('Array(5)', Array(5).map((x, i) => ({id: i, value: 0})))
console.log('[0,0,0,0,0]', [0,0,0,0,0].map((x, i) => ({id: i, value: 0})))

Answer 1

it('checks Headline container, width & horizontal spacing', () => {
  cy.get('[data-cy=headline]')
    .should('have.css', 'width', '571px')
})

检查should()的作用：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill