Array坑

作者: 勃王 | 来源:发表于2018-08-24 11:36 被阅读0次

    const a = new Array(10),
    b = new Array(10, 9),
    c = new Array(10, 9, 8)

    console.log(a, b, c)
    const d = Array.of(10),
    e = Array.of(10, 9),
    f = Array.of(10, 9, 8)

    console.log(d, e, f)

    稀疏数组的坑

    var a = new Array(10)
    number = a.map((_,index) => index)
    console.log(number)
    

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