Скачать или смотреть Change the Color of a Font Awesome Icon on Click in Angular

Learn how to dynamically change the color of a `Font Awesome` icon on click using Angular's `ngStyle`. A guide for beginners to improve your wishlist application.
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This video is based on the question https://stackoverflow.com/q/68744388/ asked by the user 'nehacharya' ( https://stackoverflow.com/u/9630366/ ) and on the answer https://stackoverflow.com/a/68745301/ provided by the user 'Mohamed Karkotly' ( https://stackoverflow.com/u/10242047/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Change the Color of a Font Awesome Icon on Click in Angular

If you are building a web application using Angular and want to enhance your user interface, ensuring your icons respond to user interactions can make a huge difference in the user experience. One very common scenario is changing the color of icons, such as a star icon representing a wishlist item, when a user clicks on them. If you're new to Angular and struggling to implement this feature, you're in the right place! Let's break down how to achieve this in a few easy steps.

The Problem

In your Angular application, you may have a Font Awesome star icon that you wish to fill with a yellow color when clicked. The issue arises when using ngStyle to set the icon color; it ends up being set before the click event rather than toggled upon clicking. You might also want the ability to reverse this action—returning the icon to its original color when clicked a second time. That’s where toggling the icon’s state becomes essential.

The Solution

Step 1: Update Your Item Interface/Class

First, we need a way to track whether the item has been selected (or added to the wishlist). To do that, modify the interface or class associated with your wishlist items by adding a new property. This property can be called selected. Here’s an example:

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Step 2: Modify Your HTML Template

Next, let's adjust the HTML template in which your icon is displayed. You will incorporate the ngStyle directive to dynamically change the color based on the selected property. Here's how your template will look now:

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Step 3: Implement the Click Event Handler

Now, let's define the addToWishList(item) function in your component. This function needs to toggle the selected state of the item each time it's clicked. Here’s a sample implementation:

[[See Video to Reveal this Text or Code Snippet]]

Putting It All Together

Once you've followed these steps, clicking on the star icon will fill it with yellow, indicating that the item has been added to your wishlist. A second click will toggle the color back to its original state, signifying that the item is no longer in the wishlist. This creates an interactive experience for users when managing their wishlist items.

Conclusion

Implementing a dynamic color change for icons in Angular enhances user engagement and improves the usability of your application. Now that you know how to use ngStyle and click event handling effectively, you can apply similar methods to other elements in your application. Happy coding, and may your wishlist application shine bright!