Скачать или смотреть How to Fix Angular routerLink Refresh Issues When Using an Array of Objects

Learn how to avoid page refresh issues in Angular when using `routerLink` with an array of objects by utilizing the correct template approach.
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Fixing Angular routerLink Refresh Issues When Using an Array of Objects

When developing an Angular application, you might encounter issues with navigation links not functioning as expected. Specifically, you may notice that hard coded routerLinks work just fine, but when you attempt to create links dynamically from an array of objects, clicking on them refreshes the entire page. In this post, we’ll explore why this happens and how to properly implement dynamic routing in Angular using routerLink without causing unwanted page refreshes.

The Problem

In your scenario, you initially defined the navigation links as hard-coded elements:

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

This method works smoothly, allowing for seamless navigation without any page reloads.

However, when you switch to dynamically creating links from an array of objects, the links behave unexpectedly. Here’s a simplified version of your code that leads to this issue:

Example Code

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

The dynamic link creation involves constructing the HTML manually, which results in the following code snippet causing page refreshes upon navigation:

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

The use of innerHTML to insert the links bypasses Angular’s template renderer, which is why these links behave as standard HTML links, leading to a full page refresh when clicked.

The Solution: The Angular Way

To avoid this issue and adhere to Angular's best practices, it’s recommended to handle dynamic content using Angular's built-in directives. Instead of manipulating the DOM directly, you can utilize the ngFor directive to dynamically generate links. Here’s how to implement it correctly:

Updated HTML Template

Use ngFor to iterate over the links array and bind the routerLink directly in the template:

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

Benefits of This Approach

No Manual DOM Manipulation: By using ngFor, you're allowing Angular to handle the rendering, which is more efficient and reduces errors associated with direct DOM manipulation.

Seamless Navigation: The routerLink directive gets properly recognized by Angular, preventing any page refresh issues and providing a smoother user experience.

Enhanced Maintainability: Your code remains cleaner, more readable, and easier to maintain over time.

Conclusion

When using Angular, it’s important to follow its design paradigms for managing dynamic content, especially navigation. By utilizing Angular's ngFor directive for rendering lists of links, you can avoid page refresh issues that arise from directly manipulating the DOM. This approach not only adheres to best practices but also enhances the overall performance and maintainability of your application.

Give this method a try in your Angular project and enjoy a more seamless navigation experience!