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prototype in javascript

//every object has internal property call prototype.
//prototype is simple reference to another object that
//contain common attributes and methods which will save memeory 
function Todo(name,completed){
this.name=name;
this.completed= completed;
}
Todo.prototype.getTodoName= function(){
console.log(this.name)
}

const todo= new Todo("Buy Eggs", false);
const todo2= new Todo("Learn javascript", false);
todo.getTodoName();
console.log(todo,todo2);
//at console getTodoName will be inside prototype which will save memeory
Comment

function prototype javascript

function Person(name) {
  this.name = name;
}
Person.prototype.getName = function() {
  return this.name;
}

var person = new Person("John Doe");
person.getName() //"John Doe"
Comment

javascript prototype example

const array1 = [5, 12, 8, 130, 44];

const found = array1.find(element => element > 10);

console.log(found);

// expected output: 12
Comment

what is Prototype javascript

* Prototype

-Every object in JavaScript has a built-in property,
which is called its prototype. 

-The prototype is itself an object, so the prototype will 
have its own prototype, making what iss called a prototype chain.

-The chain ends when we reach a prototype that has null for 
its own prototype.

-Prototypes are the mechanism by which JavaScript objects inherit
features from one another

const  arr = [1,2,3,4]

// proto type : arr.__proto__
// prototype chain : arr.__proto__.__proto__.__proto__

Comment

what is prototype in javascript

// prototypes in javascript, THey create new Methods to our constructor function
const EmployersInfo =  function(name , salary , bonusPercentage){
    this.name = name ;
    this.salary = salary;
    this.bonusPercentage = bonusPercentage;
}

// prototype for getting the employer credential
EmployersInfo.prototype.credentialInfo = function(){
        return `${this.name} Has a base salary of ${this.salary}`;
}

EmployersInfo.prototype.getBonus = function(){
    let bonusAmount = (this.salary * (this.bonusPercentage));
    return `${this.name} earned ${bonusAmount} Bonus`;
}
// let's first create the instance of employerInform
const employerInform = new EmployersInfo('kevin' , 12000 , 12);

// logging employerInform
console.log(employerInform);

// logging the credentials 
console.log(employerInform.credentialInfo());

// logging the Bonus function 
console.log(employerInform.getBonus());
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Comment

prototype javascript

/*Prototype is used to add properties/methods to a 
constructor function as in example below */

function ConstructorFunction(name){
	this.name = name //referencing to current executing object
}
ConstructorFunction.prototype.age = 18
let objectName = new ConstructorFunction("Bob")
console.log(objectName.age) //18
Comment

[[Prototype]]

var proto = {    describe: function () {        return 'name: '+this.name;    }};var obj = {    [[Prototype]]: proto,    name: 'obj'};
Comment

what is prototype in javascript

//every object has internal property call prototype.
//prototype is simple reference to another object that
//contain common attributes and methods which will save memeory 
function Todo(name,completed){
this.name=name;
this.completed= completed;
}
Todo.prototype.getTodoName= function(){
console.log(this.name)
}

const todo= new Todo("Buy Eggs", false);
const todo2= new Todo("Learn javascript", false);
todo.getTodoName();
console.log(todo,todo2);
//at console getTodoName will be inside prototype which will save memeory
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

className.prototype.functionname = ()=>{

};
Comment

use of prototype in javascript

className.prototype.functionname = ()=>{

};
Comment

use of prototype in javascript

className.prototype.functionname = ()=>{

};
Comment

use of prototype in javascript

className.prototype.functionname = ()=>{

};
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for variables in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = "Arunkumar Chandra";

         document.write("</br>");

         document.write(tutorails.Author);

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for variables in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = "Arunkumar Chandra";

         document.write("</br>");

         document.write(tutorails.Author);

      </script>   

   </body>

</html>
Comment

use of prototype in javascript

ClassName.prototype.variableName = value;
Comment

use of prototype in javascript

<html>

   <body>  

      Demonstrating prototype for method in javascript

   </br>

   </br>

      <script type = "text/javascript">

         function details(){

           this.website="Tools QA",

           this.language="Java Script"

         }

         var tutorails = new details();

         document.write(tutorails.website);

         document.write("</br>");

         document.write(tutorails.language);

         details.prototype.Author = ()=>{

            return "Arunkumar Chandra";

         };

         document.write("</br>");

         document.write(tutorails.Author());

      </script>   

   </body>

</html>
Comment

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