Скачать или смотреть How to Make Child Menus in v-navigation-drawer Visible by Default in Vue 3 and Vuetify 3

Discover how to show child menus in the `v-navigation-drawer` of your Vue 3 and Vuetify 3 project automatically on the first run. Step-by-step guide inside!
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This video is based on the question https://stackoverflow.com/q/75546262/ asked by the user 'mtDeveloper' ( https://stackoverflow.com/u/20200364/ ) and on the answer https://stackoverflow.com/a/75554556/ provided by the user 'AA_' ( https://stackoverflow.com/u/20866741/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Make Child Menus in v-navigation-drawer Visible by Default in Vue 3 and Vuetify 3

In modern web development, providing an intuitive and user-friendly navigation experience is crucial. One common challenge developers face is how to make child menus visible by default when a project is first launched. In this post, we’ll dive into how you can achieve this with the v-navigation-drawer component from Vuetify while using Vue 3.

The Challenge

You’ve built a v-navigation-drawer component that features parent and child menu items. However, you want the child menus to be visible automatically when the application is first opened, instead of requiring users to click to reveal them. This functionality enhances user experience by making navigation simpler and more accessible.

Solution Overview

To automatically display child menu items when you run your project, you can leverage Vue’s lifecycle method mounted. We'll select the necessary DOM elements and adjust their properties accordingly. Here’s how to implement the solution step by step.

Step-by-Step Implementation

Modify Your Template: Start with the existing v-navigation-drawer layout you’ve created. Make sure you have a structure similar to this:

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

Add the Mounted Hook: Now, you will add a mounted lifecycle hook in your script section. This hook will execute after your component has been added to the DOM, allowing you to manipulate the elements directly.

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

Explanation of Code

mounted(): This Vue lifecycle hook is triggered after your component has been mounted in the DOM. Using this.$nextTick(), you ensure that your DOM manipulation occurs after Vue has rendered the component.

Querying Elements: We use document.querySelectorAll() to get all elements of the class .v-list-group, representing our parent menus.

Loop Through Groups: The loop iterates over each group, selecting its corresponding content (.v-list-group__items), and forcing its visibility by adding an active class and displaying it.

Conclusion

By following this guide, you can easily configure your v-navigation-drawer to show child menus by default when your application first runs. This small tweak ensures that users have immediate access to navigation options, enhancing their experience while using your app.

Now that you have this setup, consider experimenting with additional features or styles to further enrich your user interface! Happy coding!