04/09画图作业

constructor

Date

DatePrototype

__proto__

prototype chain（原型链）ECMA262定义：Every object created by a constructor has an implicit reference (called the object's prototype) to the value of its constructor's \"prototype\

null

Object

constructor（构造函数）ECMA262定义：A function object is an object that supports the [[Call]] internal method. A constructor (also referred to as a constructor function) is a function object that supports the [[Construct]] internal method.Each constructor is a function that has a property named \"prototype\

JavaScript原型链示意图

FunctionPrototype

Function

ObjectPrototype