The constructor of prototype/constructor/__proto__.

The literal meaning of 1.constructor is construction. It is a property of the object, and its corresponding value is the "constructor" of the object

1 //constructor of an object instantiated by a constructor function2 functionCMF (n,m) {3    This. n=N;4    This. m=m;5    This. mn=function(){6   return  This. n+ ' | ' + This. M7   }8 }9 varcmf=NewCMF (' C ', ' Q ')TenConsole.log (Cmf.mn ())//C|q OneConsole.log (Cmf.constructor)//CMF (n, m) A //Here you can see the CMF () instance of the CMF () object, the constructor of which is its intrinsic property.  -  - //Ii. constructor of basic data Types the varyi=154 -Console.log (Yi.constructor)//Number () - varLi= "Qdz" -Console.log (Li.constructor)//String ()

Constructor of the 2.1 prototypes

1 functionCMF (n,m) {2    This. n=N;3    This. m=m;4    This. mn=function(){5   return  This. n+ ' | ' + This. M6   }7 }8 9cmf.prototype.jn=function(){Ten   return  This. m+ "!" + This. N One } A varcmf=NewCMF (' C ', ' Q ') -Console.log (Cmf.jn ())//Q!c -Console.log (Cmf.prototype)//CMF {jn=function ()} theConsole.log (typeofCmf.prototype)//Object -Console.log (Cmf.prototype.constructor)//CMF (n, m) - //It is shown above that the constructor of the constructor prototype points to the constructor function. How do you understand that the prototype of the constructor is an obj, and what does this obj consist of? is its constructor constructor. 

2.2 Constructor of the basic data type

  string.prototype.cf=function(n) {   /// to String.prototype this obj Add method CF, string multiplication             Return    new Array (n+1). Join (this)    }var d= "D"  Console.log (D.CF (///ddddd//  String {cf=function ()}// String () // similar to constructors

The constructor of the

prototype/constructor/__proto__.