Prototype & Inheritance in JavaScript
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share

Prototype & Inheritance in JavaScript

  • 1,506 views
Uploaded on

What is prototype and how we use it to inherit the properties of an object in JavaScript.

What is prototype and how we use it to inherit the properties of an object in JavaScript.

More in: Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
1,506
On Slideshare
1,474
From Embeds
32
Number of Embeds
3

Actions

Shares
Downloads
59
Comments
0
Likes
5

Embeds 32

http://localhost 28
http://192.168.6.179 2
http://tarboard.com 2

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Prototype & Inheritance in JavaScript C# Corner – 21st September Sunny Kumar
  • 2. Prototypes in JavaScript • What is Prototype? • Augmenting the Prototype • Overwriting the Prototype • Use of Prototype • Prototype Chain Inheritance in JavaScript • Various ways of Inheritance in JavaScript.
  • 3. Sneak Peek into past… Functions - are objects. - returns Value. - can return objects, including other functions. - they have properties. - they have methods. - can be copied, deleted, augmented. - special feature: Invokable. - when invoked with new keyword, returns an object named this , can be modified before it’s returned.
  • 4. Sneak Peek into past… Constructor Functions var Person = function(name) { this.name = name; this.getName = function() { return this.name; }; }; var me = new Person(“Sunny"); me.getName(); // “Sunny"
  • 5. • prototype is a property of function object. • Only function Objects can have prototype property.
  • 6. var foo = function(){}; console.log(foo.prototype); Object {} //output
  • 7. Var foo=function(){}; Var myFoo = new foo(); //instantiates an object of foo. foo.prototype.MaxValue=100; foo.prototype.SayHello=function(name){ return “Hi “+name+” !”; } myFoo.SayHello(“Kumar”); // “Hi Kumar !”
  • 8. foo.prototype={x:1,y:2}
  • 9. var Person = function(name) { this.name = name; }; Person.prototype.say = function(){ return this.name; };
  • 10. var dude = new Person('dude'); dude.name; // "dude“ dude.say(); // "dude“ same result