Скачать или смотреть How to Add Classes Dynamically in jQuery for Mobile Devices

How to Add Classes Dynamically in jQuery for Mobile Devices

Can't use Jquery to add class to HTML when on mobilejquery

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Описание к видео How to Add Classes Dynamically in jQuery for Mobile Devices

Discover how to use jQuery for dynamically adding classes to HTML elements in response to device width, enhancing your website's responsiveness.
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This video is based on the question https://stackoverflow.com/q/66777712/ asked by the user 'Prayag Prajapati' ( https://stackoverflow.com/u/14581963/ ) and on the answer https://stackoverflow.com/a/66779636/ provided by the user 'Prayag Prajapati' ( https://stackoverflow.com/u/14581963/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Adding Classes Dynamically in jQuery for Mobile Devices

Creating a responsive website is essential in today’s mobile-first world. Many developers face challenges when trying to adjust HTML elements based on the device being used. One common issue arises while using jQuery to add classes when viewing on mobile devices. In this post, we will explore a practical solution to this problem, as well as how to load different HTML files based on the device type.

The Problem

You might be trying to add specific classes to your HTML elements using jQuery when the screen width falls below a certain threshold, often to apply mobile styles or behaviors. However, this functionality sometimes fails, especially when the jQuery script is included externally or if improper conditions are set. Let’s take a look at a sample jQuery code that might not work as intended:

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

In this case, based solely on the screen width, you expected your HTML to adapt accordingly. Often, the problem lies in script loading order or the context—like it being in a separate file, which can lead to unforeseen issues.

A Working Solution

The good news is that this can be resolved with a simple modification in your HTML file. Here's how you can dynamically add a class based on screen width without relying on external scripts.

Here’s the Code to Use:

You can directly paste the following script in your HTML file within the <head> section or just before the closing body tag:

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

Key Points:

No Additional HTML Class Required: The above code does not require any pre-existing classes in your HTML to function properly.

Dynamic Class Application: It checks the screen width and adjusts the class accordingly as soon as the window is ready.

Loading Different HTML Files Based on Device

In addition to adding classes, you might want to load different HTML files based on whether the user is on a mobile device or a desktop. Here’s a concise way to achieve that:

Sample Code for Loading HTML Files:

You can expand your script to load specific HTML files as follows:

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

Explanation:

The script checks the screen width.

Based on that, it loads either mobile.html or computer.html into the body of the existing page.

Make sure both HTML files are in the same directory or update the paths accordingly.

Conclusion

Using jQuery to handle dynamic class additions and load distinct HTML files based on device types is straightforward once you know how to structure your code properly. Always ensure your scripts are placed correctly and that your conditions accurately check for the intended parameters. This can make your website much more responsive and user-friendly across devices.

Implement these solutions into your projects, and you'll find it easier to adapt your website to a wide variety of users and devices. Happy coding!

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