Скачать или смотреть How to Remove a div with a Specific Class in JavaScript and CSS

Learn how to effectively target and display specific ` div ` elements with distinct classes, ensuring your web page displays the right information.
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This video is based on the question https://stackoverflow.com/q/68859984/ asked by the user 'Jacob Stuard' ( https://stackoverflow.com/u/12928073/ ) and on the answer https://stackoverflow.com/a/68860103/ provided by the user 'ahsan' ( https://stackoverflow.com/u/13870209/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Remove a <div> with a Specific Class in JavaScript and CSS

When working with HTML, it's common to have multiple elements sharing a class name, especially in cases where you want to handle display properties dynamically. One common issue developers face is needing to display a specific block while hiding others based on certain class conditions. Let's explore how to effectively achieve this using a combination of CSS and JavaScript (if necessary).

The Problem at Hand

Imagine you have a set of <div> elements like this:

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

In this example, you want to only display the block with the class current-category, but an attempt using CSS has proven to be an ineffective strategy for varied circumstances. Here's the CSS you tried:

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

Unfortunately, this method only displays the first instance of the class .categoryname, and that is not always the current-category. So how can we adjust our approach?

The Solution

To improve your display functionality, you need to modify your CSS selectors in order to accurately target your desired class. Here is how to do it effectively:

Updated CSS Code

You can utilize a more specific CSS selector that nests the class names without spaces. This allows you to target the desired element more precisely. Here's the correct CSS code:

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

This change ensures that only the <div> with both categoryname and current-category will be displayed.

Example Markup

With the adjusted styling in mind, your HTML can remain as is:

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

Additional Considerations

Multiple Pages: If you're dealing with multiple pages, make sure that the class current-category can appear in different positions within the same structure, as your new CSS targeting will handle this flexibility.

JavaScript Integration: If you also want to handle cases dynamically via JavaScript, you might consider adding or removing classes based on user interaction or other logic.

Conclusion

Understanding how to manipulate display properties based on class names is crucial for good web design. By refining your CSS selectors to target multiple classes effectively, you can achieve a cleaner and more dynamic layout. Just remember to write the class names without spaces when targeting multiple classes, and you'll be able to display exactly what you need in your HTML structure.

If you have any further questions or need additional examples, feel free to ask!