Скачать или смотреть How to Delete Session Storage When Changing the Toggle State

Discover how to effectively manage session storage in JavaScript, especially when using jQuery to create toggle effects on your web page.
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This video is based on the question https://stackoverflow.com/q/62511771/ asked by the user 'nsog8sm43x' ( https://stackoverflow.com/u/12267943/ ) and on the answer https://stackoverflow.com/a/62512122/ provided by the user 'Anirudh santhosh' ( https://stackoverflow.com/u/4398399/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

In web development, preserving user preferences is crucial for enhancing user experience. A common requirement is to save the state of UI components, such as a dark mode toggle, across page refreshes. However, a challenge arises when you want to reset or change the stored state in session storage when toggling back to a different state. This guide addresses how to manage session storage effectively during a toggle state change, ensuring that your preferences work seamlessly.

Understanding the Problem

The scenario involves a jQuery function that applies a dark contrast theme to a webpage using the toggleClass method. When the user toggles the state (dark/light mode), the result is saved in sessionStorage so that it persists across page refreshes. However, the issue occurs when the user switches back to the light mode; the previous dark mode setting still loads from session storage, which is not the desired outcome.

Example of the Issue

Consider the jQuery code provided by a user, which saves the state but does not properly toggle the session storage:

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

In this setup, switching back to light mode does not clear or update the sessionStorage, maintaining the dark mode despite user action.

Crafting the Solution

To solve this issue, you need to ensure that the session storage updates appropriately when the toggle button is clicked. Below is an improved approach that effectively manages the toggle state.

Updated jQuery Solution

Here’s the refined jQuery code that addresses the problem:

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

Breakdown of the Code

Check Existing State: At the beginning, the code checks for an existing toggleState in the session storage.

Initial Class Application: If toggleState is true, the classes reflecting dark mode are applied.

Button Click Handler:

On clicking the toggle button, the current state is checked.

If the dark mode is currently active (i.e., toggleState exists), it is removed from session storage.

If dark mode is not active, it is added to session storage.

Class Toggling: Regardless of the state, the function toggles the appropriate classes to reflect the current theme.

Important Tips

Consistency in Storage: Ensure that your session storage states are consistent with the visual state of the page.

Clear Class Logic: Make sure that class additions and removals are easy to understand and update, enhancing code maintainability.

Conclusion

Managing session storage while implementing interactive UI features is essential for creating a high-quality user experience. Following the structured approach discussed above, developers can effectively handle toggle states, preventing unwanted behavior upon state changes. By ensuring the session storage is updated on each toggle action, users will benefit from a seamless experience tailored to their preferences.

If you have further questions or need additional examples, feel free to ask in the comments!