Prototype and constructor in Javascript

To say JavaScript prototype inheritance, you will certainly understand the attributes of prototype. But how much do you know about it? Baidu or Google, but still do not understand. I checked some small materials. Let's take a look at an example. I am not very familiar with it.

 

First, we need to differentiate what is the prototype attribute and the constructor attribute. That is, to distinguish between constructors, functions, and object instances.

In JS, the constructor is a function, and the function is the constructor. The object instance is an instance created through var OBJ = new function. The difference is prototype and constructor. As can be seen from the above English, prototype is an object, which defines a constructor. we can infer that constructor is the attribute of the object instance! Instead of the function (constructor) attribute. Prototype is a function (constructor) attribute, not an instance attribute!

 

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