javascript - object constructor pointing to Object function after redefining prototype of self defined function -

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Whenever I've redefined the prototype of the function and made it a new object, its constructor root object function itself Function explain me with this scenario: 

  var person = function (firstName, lastName) {this.firstName = firstName; This.lastName = lastName; } Person.prototype.getFullName = function () {return this.firstName + "" + this.lastName; } Var Student = New Person ("Ankur", "Agarwal"); Student.constructor // The person who is correct   
 After that I redefine the person prototype and  
  Person.prototype = {} Var manager = New Person ('John', 'Smith'); What is the number of the manager.constructor // object?   
 In addition, if the object is pointing to luck, then how does it come to use the names of persons like the first name and last name?  
 Enter image details here   
 < 
 This.lastName = lastName; }   
 There is a default  prototype  property, which is an object  manufacturer  property reference  person  manufacturer. This is such property that (by default) examples are succession through the  [[prototype]]  series.  
 When you create an example, the  first name  and  last name  properties are defined on the example, such as:  
 < Code> var person = {firstName: ..., lastName: ...};   
 Then those properties are unaffected by the prototype of the constructor.  
 When a new object constructor's prototype is assigned:  
  Person.prototype = {};   
 It receives a  constructor  property from  Object.prototype  (which is its constructor). So before reaching the example  constructor , for example, its  [[prototype]]  (Person.prototype), then its  [[prototype]] Looks at  (Object.prototype) and  objects  for a reference. You can do this:  
  person.prototype.constructor = person;   
 You can find more information on MDN.

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