Скачать или смотреть How to Change Element Class When Radio Button is Checked Using jQuery

How to Change Element Class When Radio Button is Checked Using jQuery

Change element class when radio button in checked with jQueryjquery

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Описание к видео How to Change Element Class When Radio Button is Checked Using jQuery

Learn how to easily manage your web forms by changing element classes based on radio button selections with jQuery.
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This video is based on the question https://stackoverflow.com/q/62399251/ asked by the user 'popol' ( https://stackoverflow.com/u/9933285/ ) and on the answer https://stackoverflow.com/a/62399354/ provided by the user 'Nick' ( https://stackoverflow.com/u/9473764/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

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How to Change Element Class When Radio Button is Checked Using jQuery

When building interactive web forms, you might want to show or hide elements based on user selections. A common scenario is to change the visibility of elements when a radio button is checked. This post will guide you on how to achieve that functionality using jQuery.

The Problem Statement

Suppose you have several blocks, each represented by a <div> with the class .form-group. Some of these blocks contain additional elements, referred to as .sub-question. When a specific radio button within a form group is selected, you want to remove a class (for instance, .hide) from the corresponding .sub-question element, making it visible to the user.

Here’s an example of the HTML structure you might be working with:

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

In this structure, when the user selects either "Choice A" or "Choice B," you want the .sub-question to appear by removing the .hide class.

The Solution Explained

To implement this functionality, you will use jQuery to manage event handling and class manipulation. Here's a clear step-by-step approach to achieve your goal:

Step 1: Setting Up jQuery

Before you start coding, ensure you have jQuery included in your project. Add this line in the <head> section of your HTML file:

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

Step 2: Add the Event Listener

Next, you’ll need to add a click event listener to the radio buttons. This will trigger when a user selects a radio button:

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

Step 3: CSS Class for Hiding Elements

Make sure you have the .hide class defined in your CSS to actually hide elements:

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

How It Works

When a radio button is clicked, the event handler checks if the clicked element's parent is not a .sub-question.

It hides all .sub-question elements by adding the .hide class.

Finally, it removes the .hide class from the .sub-question that is related to the clicked radio button, thereby displaying it.

Conclusion

By following the steps outlined above, you can easily manage the visibility of elements in your web forms based on user input. This not only enhances user experience but also helps you create dynamic forms that respond intelligently to user interactions.

Try integrating this code into your projects, and see how it makes form management easier!

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