TYPESCRIPT

8th Day                                                                                                      

Hey Guys, I'm very glad to share with you, We have already studied about VS CODE, 

NODE JS, NPM . And today's we are going to study about TYPESCRIPT. 

This concept is very important to start the Angular.

     

                         TYPESCRIPT      

• Whole Angular has made in typescript.
• TypeScript is an open-source language which builds on JavaScript, one of the world’s most used tools. i.e. Any browser, any OS, anywhere JavaScript runs. Entirely Open Source.
• TypeScript extends JavaScript by adding types.                                                                           

                Basic comparison between JavaScript and TypeScript

• TypeScript is known as Object oriented programming language whereas JavaScript is a scripting language.
• TypeScript has a feature known as Static typing but JavaScript does not have this feature. 

•    In case of TypeScript,
  
  Var x =0; // TS compiler will treat as number. But when we assign like x="Raushan"  it will show error like:

•                        

Important Points:     

• TypeScript extends JavaScript and makes it strongly typed.
• Strongly typed means while we write the code the data typed checked.
• Advantages during development phase errors and issues will be caught.
• This is the TypeScript Code:
                    
• But to execute this code we will have to be convert it into JS with VS Code terminal like
• Command : tsc file.ts .      It will look like:                                                                                                        
  
  
• TypeScript translates/ transpiles /convert to JavaScript.
• All JavaScript Code are valid for TypeScript code. For Example: alert("Hello"); .         
• TypeScript is known as Object oriented programming language.
• TypeScript gives you benefit OOP, Classes,==> Closures and IIFE.
•  For Example:                                                                                                                   
  In JS code it will convert like: Closure
  
  
•   Using Inheritance Concepts: 
  Its JS  Code will be:
  
  So friend If you have any mistakes in any articles you can send me on my email:1809raushan@gmail.com.

                                                                                Thank You...