Javascript-js ask a new object to inherit the prototype array problem?

An element is added to the obj1 array, which is also added in the Obj2 array.
Do they inherit the array as a pointer? Everyone has an array of prototype this object?

//最后问一个很奇怪的问题(prototype中的array难道也只是一个指针?)

Thank you..

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An element is added to the obj1 array, which is also added in the Obj2 array.
Do they inherit the array as a pointer? Everyone has an array of prototype this object?

//最后问一个很奇怪的问题(prototype中的array难道也只是一个指针?)

Thank you..

The first thing to understand is how to achieve inheritance.

1. The constructor has a prototype property.
2. Each instance of a constructor has a __proto__ prototype property that points to its constructor.
3. When accessing an attribute that does not exist on an object itself, it is searched by the __proto__ prototype of its constructor.
4, so the call obj1.array access is Person.prototype.array ; obj2.array Person.prototype.array
5, obj1 with obj2 the common use of this one array .
6, so whether to pass by value or reference delivery is irrelevant. Each instance was originally accessed by aprototype
Each instance does not save a copy of the constructor prototype.

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