What is component in angular.

In this article we will discuss about the component that we are using angular2 application .

A angular component mainly consist of three things.
1. Class
2. Template
3. Metadata.

We will discuss it one by one .
Lets first add a component through Visual studio code.


Basically the component is created with .ts extensions and we keep the name as filename.component.ts .
Now we will discuss it one by one.

1. Class :
Like other object oriented programming language we declare the class . class is declared with a name and having some property , method and constructor as well.

2. Template :
 Template is nothing but an view part of the application . What ever we want to render in the screen that should be mentioned in the template section . Basically the template section contains the HTML content.

3. Metaddata :

 Its a extra data used to decorate the angular class for behaving the class properly.
Angular2 uses several entries for metadata like annotations, design : paramtypes , popMetadata and parameters etc.



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