How to Dynamically Add Google Fonts to Your Angular Project Post-Build

Описание: Learn how to dynamically inject Google Fonts into your Angular application after the build process, allowing for flexible font management without rebuilding the app.
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This video is based on the question https://stackoverflow.com/q/68901946/ asked by the user 'phunder' ( https://stackoverflow.com/u/714713/ ) and on the answer https://stackoverflow.com/a/68902879/ provided by the user 'Salahuddin Ahmed' ( https://stackoverflow.com/u/13440669/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Dynamically Add Google Fonts to Your Angular Project Post-Build

When working on an Angular project, you might face a situation where clients want to customize certain aspects of an application without going through the lengthy process of rebuilding it each time. One common customization is the ability to change fonts dynamically after the project has been built. In this guide, we'll guide you through a solution to dynamically inject Google Fonts into your Angular project even after the build process is complete.

The Challenge

Clients often need to deploy Angular applications across different settings with varying requirements. In our case, the requirement is straightforward: allow different Google Fonts to be used depending on the deployment instance, without the need for a new build. Typically, you might add fonts in the index.html file, like this:

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However, this approach lacks the flexibility needed for dynamic font selection based on deployment configuration. The crux of the challenge lies in the fact that HTML files cannot accept runtime variables easily; hence, we need an alternative solution.

A Step-By-Step Solution

To achieve dynamic font management, we can use a configuration file, custom styles, and Angular's built-in capabilities. Below is a structured method to implement this.

Step 1: Download the Font Files

Download the desired Google font (e.g., Roboto).

Save the font files in the src/assets/fonts directory of your Angular project.

Step 2: Define the Font in CSS

Next, we need to configure the font in our CSS file by defining it with the @ font-face rule.

Add the following CSS code to your src/style.css:

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This declares the font so that it can be used within your Angular components.

Step 3: Create a Configuration File

Create a configuration file called config.json in your src/assets directory to store the font name.

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This file will hold the font name, which can be easily modified without changing the codebase.

Step 4: Load Configuration in Your Component

Now, you’ll need to load this configuration in your Angular component. Assuming you have a service called ConfigLoaderService, you’ll set up the component like this:

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Step 5: Apply Styles in the Template

Finally, you can now apply the styles dynamically within your HTML template. You will call the applyStyles() function like this:

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This line ensures that the font defined in your configuration is applied to the text dynamically.

Conclusion

By following these steps, you can effectively manage Google Fonts in your Angular application post-build. This process allows your clients to easily tailor the visual identity of their applications without requiring a full rebuild every time a font change is needed. It's a win-win solution for maintaining flexibility and functionality in modern application development.

Feel free to adapt and test this approach in your projects for optimal results!