To develop Angular apps, Node.js must be installed since Angular is written in TypeScript, which needs to be compiled to JavaScript for browsers to understand. The document outlines installing Node.js and the Angular CLI, using the CLI to generate a new Angular app called "my-app", and serving it locally at localhost:4200. It also recommends using Visual Studio Code as the code editor and shows how to open the generated app in VS Code.

1. Preparing for the next Development Tool
Magic XPA 4

2. Node.js for Angular
 We need to install Node.js to develop Angular Apps
 Angular written in Typescript
 Browser does not understand Typescript (.ts), than we
need to use Node and NPM to compile them into
JavaScript (.js)
 Visual Studio Code recommended as code editor

3. Node.js Setup

4. Visual Studio Code Setup

5. Install and Run Angular
 In command prompt
 npm install –g @angular/cli
 Create a new Angular application
 ng new my-app
 Run Angular application
 cd my-app
 ng serve
 http://localhost:4200 in browser
 Open Angular application in VS Code, using another
command
 cd my-app
 code .

6. My-app Angular application

7. Visual Studio Code – My-app

8. app.component.css

9. app.component.html

10. app.component.spec.ts

11. app.component.ts

12. app.module.ts

13. Change app.component.css

14. ng serve

15. localhost:4200 with new css