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Creates an array.
Array([element0 [, element1 [, ...]]])
An Array object. In the first case, the array has the number of elements specified by length, which are initialized to undefined. In the second case, the array has a number of elements equal to the number of arguments given, and the elements are initialized to the values of the corresponding arguments.
When Array is called with a single argument, it is considered the first form (array length) if the argument is type Number. Otherwise, it is considered the second form (a one-element array).