Class inheritance with method in javascript -

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I'm new to javascript app development. When I came up with the function and I have found a code for all 

  function perarizer (value) {console.log (this.setValue ()); } Parenizor.method ('setValue', function () {console.log ('called');}); Parenizor.method ('getValue', function () {return1;}); Parenizor.method ('toString', function () {return2;});   
 And when I type the function  
  var a = new paragere (1)   
  A. SetValue ()   
 It gives me an error such as  not a function undefined  .. why is it ?? I hope that someone here can find my fault..धन्यवाद .. :)   
 
 
 it seems That your code comes by Douglas Crockford.  
 I think you have not read this part:  
 
 To create examples of work above, I wrote four methods, firstly, the  method  method, which combines an example method for a class.  
  function.propytip.mission = function (name, fanc) {this.prototype [name] = fancy; This return; };

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