In Angular, there is a distinction between adding styles and scripts in the `angular.json` configuration file and adding them directly in the `index.html` file. Here's a breakdown of the key differences:
The `angular.json` file is the configuration file for an Angular project. It contains various settings and options related to the project's build process, including the configuration for styles and scripts.
These styles and scripts defined in the `angular.json` file will be automatically included and bundled as part of the build process. They will be loaded and applied to the application during runtime.
The `index.html` file is the main HTML file for an Angular application. It is the entry point for the application and contains the basic structure of the HTML document.
The styles and scripts added directly in the `index.html` file are separate from the ones specified in the `angular.json` file. They are not part of the build process or bundling performed by Angular. Instead, they are loaded and applied by the browser directly when the `index.html` file is loaded.
In summary, the key differences are:
- Styles and scripts specified in the `angular.json` file are part of the Angular build process and bundled with the application during build time.
- Styles and scripts added directly in the `index.html` file are loaded by the browser at runtime, separate from the Angular build process.
Typically, it is recommended to use the `angular.json` file for including styles and scripts that are part of the project and managed by Angular. On the other hand, adding external stylesheets or scripts in the `index.html` file is useful for including third-party libraries or custom styles and scripts that are not managed by Angular.