What is TypeScript in Angular2 - Part3
To learn Angular2 from scratch and most useful for beginners Please see the link below:
• What is AngularJS and What is Angular...
To watch previous tutorials plz see the links:
What is angularJS and Angular2 ?
• What is AngularJS and What is Angular...
Why Angular2 ?
• Why Angular2 is Used? - Part2
Typescript VS Javascript-
https://www.guru99.com/typescript-vs-...
What is Typescript?
TypeScript is a typed super set of JavaScript which has been built and maintained by Microsoft and chosen by the AngularJS team for development.
**Features of TypeScript
Object-Oriented language: TypeScript provides a powerful feature of an object-oriented language such as classes, interfaces, inheritance, modules, etc. In this, we can write code for both client-side as well as server-side development.
TypeScript supports JavaScript libraries: The developers can use existing JavaScript code with the TypeScript. It can use all of the JavaScript frameworks, tools, and other libraries.
JavaScript is TypeScript: It means the code written in JavaScript with valid .js extension can be converted to TypeScript by changing the extension from .js to .ts and compiled with other TypeScript files.
TypeScript is portable: TypeScript is portable because it can be run on any browsers, devices or any operating systems. It can be run in any environment where JavaScript runs on. It is not specific to any virtual-machine for execution.
DOM Manipulation: TypeScript can be used to manipulate the DOM for adding or removing elements similar as of JavaScript.
TypeScript is just a JavaScript: TypeScript code is not understandable by any browsers directly. TypeScript code starts with JavaScript and ends with JavaScript. Hence, we only need to know JavaScript to use it in TypeScript. The code is written in TypeScript is compiled and converted into its JavaScript equivalent for the execution. The above process is known as Trans-piled. With the help of JavaScript code, browsers are able to read the code and display the output.
*Benefits
Highlights Errors - TypeScript always highlights errors at compilation time during the time of development whereas JavaScript points out errors at the runtime.
Intellisense - Great tooling supports with IntelliSense which provides active hints as the code is added.
Autocompletion - shows code completion suggest
ions or hints.
Code Navigation -https://code.visualstudio.com/docs/ed...
Strong Typing-TypeScript is a strongly-typed superset of JavaScript, which means it adds some syntactical benefits to the language.
-Runs on any browser -TypeScript runs on any browser or JavaScript engine.
Supports ES2015(ES6) Features - like classes, interfaces, inheritance etc.
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