This project contains a working demo of How to use environment variables to configure your Angular application without a rebuild.

If you have the ability to rebuild your application for use in different environments, the built-in Angular CLI application environments are perfect for storing configuration details.

However, if your application needs to be deployed with a different configuration in different environments without having the ability to rebuild it, this mechanism may be just what you are looking for.

To get a better understanding of the inner workings, make sure to read the article.

1. Run ng build --prod to build the project. The build artifacts (including env.js) will be stored in the dist/ directory.
2. Serve the contents of the dist directory using a static web server like serve.
3. Edit env.js in your dist directory to control the environment variables within your Angular application without the need for a rebuild.

As soon as you refresh your browser, the new environment variables are picked up:

For more information, check out the How to use environment variables to configure your Angular application without a rebuild.