Hide And Show Angular 4 Component Depending On Route

When working with Angular 4, it's common to come across scenarios where you need to dynamically hide or show components based on the current route. This can be a powerful feature to enhance the user experience and ensure your application behaves in the desired way. In this article, we'll explore how you can achieve this functionality in your Angular 4 project.

One way to hide or show components based on the route in Angular 4 is by using the built-in `*ngIf` directive along with the Angular Router. The `*ngIf` directive allows you to conditionally render elements in the DOM based on an expression. By combining this directive with the current route provided by the Angular Router, we can dynamically toggle the visibility of our components.

First, import the `Router` and `ActivatedRoute` classes from `@angular/router` in your component file:

import { Router, ActivatedRoute } from '@angular/router';

Next, inject these dependencies into your component's constructor:

constructor(private router: Router, private route: ActivatedRoute) { }

Now, you can use the `router.events` observable provided by the Angular Router to monitor route changes in your component:

this.router.events.subscribe((event) => {
  if (event instanceof NavigationEnd) {
    // Check the current route and hide/show components accordingly
    if (this.route.snapshot.url[0].path === 'example') {
      this.showComponent = true;
    } else {
      this.showComponent = false;
    }
  }
});

In this code snippet, we subscribe to the `router.events` observable and listen for `NavigationEnd` events, which signal that the navigation has ended. We then check the current route using the `ActivatedRoute` service and update the `showComponent` boolean variable based on the route condition.

Finally, in your component's template file, you can use the `*ngIf` directive to conditionally render your component based on the `showComponent` variable:

<div>
  <!-- Your component content goes here -->
</div>

By following these steps, you can hide or show Angular 4 components depending on the current route in your application. This technique can be particularly useful for creating dynamic user interfaces that adapt to different sections of your app.

Remember, always test your code thoroughly to ensure it behaves as expected and handles edge cases gracefully. I hope this article helps you implement dynamic component visibility based on routes in your Angular 4 projects. Happy coding!