Array.from

Array.from([1, , 2, , 3], (n) => n || 0)
// [1, 0, 2, 0, 3]

function typesOf () {
  return Array.from(arguments, value => typeof value)
}
typesOf(null, [], NaN)
// ['object', 'object', 'number']

Array.of()
Array.of方法用于将一组值，转换为数组。

Array.of(3, 11, 8) // [3,11,8]