1 Enumerable items in Array.prototype = 0 2 Enumerable items in Array = 0 3 Enumerable items in Boolean.prototype = 0 4 Enumerable items in Boolean = 0 5 Enumerable items in Date.prototype = 0 6 Enumerable items in Date = 0 7 Enumerable items in Function.prototype = 0 8 Enumerable items in Function = 0 9 Enumerable items in JSON = 0 10 Enumerable items in Math = 0 11 Enumerable items in Number.prototype = 0 12 Enumerable items in Number = 0 13 Enumerable items in Object.prototype = 0 14 Enumerable items in Object = 0 15 Enumerable items in String.prototype = 0 16 Enumerable items in String = 0