How to Add and Remove Class from Multiple Elements with jQuery

Learn how to effectively manage tab navigation using jQuery to add and remove active classes across multiple elements.
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This video is based on the question https://stackoverflow.com/q/65253234/ asked by the user 'Jascha Goltermann' ( https://stackoverflow.com/u/1517585/ ) and on the answer https://stackoverflow.com/a/65253307/ provided by the user 'Swati' ( https://stackoverflow.com/u/10606400/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Add and Remove Class from Multiple Elements with jQuery

In web development, managing user interaction is key to creating a responsive and dynamic user experience. One common interaction that developers implement is tab navigation. In this guide, we will explore how to effectively manage a tabbed interface using jQuery – specifically focusing on adding and removing classes from multiple elements when a user interacts with the tabs.

The Problem

You may have encountered a situation where you want to highlight an active tab in a tab navigation system. Typically, developers use a specific class, like active-tab, to signify which tab is currently active. The challenge arises when you have multiple tab navigation elements on a page, and clicking a tab in one navigation should not only update the active class for that navigation but also for any other navigation elements on the page.

Scenario

Imagine a navigation structure like this:

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

In the code above, clicking on one of the tabs only updates the active class for the clicked tab's navigation. Our goal is to apply the active class across all navigations consistently.

The Solution

The solution involves using jQuery to not only change the content displayed but also ensure that the active-tab class gets updated across all tab navigations.

Updated jQuery Code

Here's how to implement the solution effectively:

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

Explanation of the Code

Hide All Content: Initially, all tab content is hidden, and the first tab is shown by default.

Event Listener for Click: An event listener is set on all tabs. When a tab is clicked:

All content is hidden.

The rel attribute of the clicked tab is retrieved, which determines which content to show.

Updating Classes:

The active-tab class is removed from all tabs in both navigation menus.

The class is then added back to the appropriate tabs by selecting tabs that match the rel value of the clicked tab.

CSS for Highlighting Active Tab

To make the active tab stand out, apply some basic CSS:

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

This simple styling visually distinguishes the active tab, enhancing the user experience.

Conclusion

In conclusion, adding and removing classes from multiple elements using jQuery is a straightforward yet powerful feature for managing user interactions on a webpage. By implementing the solution discussed in this guide, you can create an intuitive tab navigation system that maintains a consistent active state across all navigations. With just a few lines of code, your web applications will feel more dynamic and responsive!

Keep experimenting with jQuery for more interactive features in your web projects!