[Angular] 002 Hello World Program
3///// PREREQUISITES /////
NodeJS (https://nodejs.org/en/download/)
VS Code (https://code.visualstudio.com/download)
Angular CLI (npm i -g @angular/cli)
///// ANGULAR CLI COMMANDS /////
Creating a project:
ng new ProjectName
Running a project on Angular Live Development Server:
ng s -o
or
ng serve --open
///// ANGULAR PROJECT STRUCTURE /////
In Angular, project is called as workspace.
Workspace folders:
1. src
app
assets
environments
2. node_modules
3. e2e
Workspace files: (Reference: https://angular.io/guide/file-structure)
HTML PART:
index.html It has app-root which points to AppComponent and all the templates of all the components in workspace.
CSS PART:
style.css It has application-level styles
Also, every component has a separate style.css file for component-specific styling.
TS FILES WHICH COMPILE TO FORM THE JAVASCRIPT PART:
main.ts It is the first file to get loaded. It declares the bootstap module. Default value is AppModule.
app.module.ts
1. declarations: These are the components which we created.
2. imports: These are the pre-defined modules (not components) like HttpClientModule and AppRoutingModule
3. providers: These are the services which should be consumed by multiple components
4. bootstap: These are the components which should be loaded first. Default value is AppComponent.
app.component.ts It is the default bootstap component in AppModule and all the ts or js files in ng_modules
VARIOUS CONFIGURATIONS:
angular.json All configurations start with this file.
E.g.: style-schematics, build configurations, test configurations
package.json It tells the allowed set of version of each of the node-modules installed.
package-lock.json It tells the exact version of each of the node-modules installed.
environment.ts production = false;
environment.prod.ts production = true;
polyfills.ts Cross-browser compatibility
tsconfig.json "target": "es5", "baseUrl": "./", "sourceMap": true
tslint.json Mentions the Typescript styling specifications which should be enforced by TS compiler.
editor.config charset = utf-8, indent_size = 2, trim_trailing_whitespace = true
.gitignore Mentions which files should the GIT ignore.
DOCUMENTATION:
README.md Describes your project and how to use it.
E.g.: How to run tests, serve it on development server, what is the url to the development server, etc.
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