为什么我可以在数组属性对象中找到Javascript数组forEach方法？

我正在使用函数Reflect.ownKeys（Array））处理ECMAScript 6。我得到的属性是：

  console.log(Reflect.ownKeys(Array))
  ["length", "name", "arguments", "caller", "prototype", "isArray", "from", "of", Symbol(Symbol.species)]

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但是我仍然可以在数组上使用forEach方法！但是我找不到forEach函数的定义位置，比如property

数组

是构造函数。请看下面的例子：

结果:

["length", "constructor", "toString", "toLocaleString", "join", "pop", "push", "reverse", "shift", "unshift", "slice", "splice", "sort", "filter", "forEach", "some", "every", "map", "indexOf", "lastIndexOf", "reduce", "reduceRight", "copyWithin", "find", "findIndex", "fill", "includes", "entries", "keys", "concat", Symbol(Symbol.unscopables), Symbol(Symbol.iterator)]

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Array

是构造函数。请看下面的例子：

结果:

["length", "constructor", "toString", "toLocaleString", "join", "pop", "push", "reverse", "shift", "unshift", "slice", "splice", "sort", "filter", "forEach", "some", "every", "map", "indexOf", "lastIndexOf", "reduce", "reduceRight", "copyWithin", "find", "findIndex", "fill", "includes", "entries", "keys", "concat", Symbol(Symbol.unscopables), Symbol(Symbol.iterator)]

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谢谢我不明白！！所有数组方法，如forEach（）或reverse（）或reduce（）或任何您要查找的都是Array.prototype的函数，以便所有数组都可以共享它们。谢谢！！我不明白！！所有数组方法，如forEach（）或reverse（）或reduce（）或您要查找的任何方法，都是Array.prototype的函数，因此所有数组都可以共享它们。