How to Properly Change 2 States in React

Discover how to manage state in React by efficiently toggling between two span elements with clear and concise code examples.
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This video is based on the question stackoverflow.com/q/65687742/ asked by the user 'rgdzv' ( stackoverflow.com/u/13115642/ ) and on the answer stackoverflow.com/a/65687884/ provided by the user 'Taghi Khavari' ( stackoverflow.com/u/11432102/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Properly Change 2 States in React: A Step-by-Step Guide

React is a powerful JavaScript library for building user interfaces, allowing developers to create dynamic web applications with ease. One common challenge many React developers face is managing the state of multiple components effectively. In this guide, we will explore how to properly change two states in React, particularly focusing on toggling between two span elements.

Understanding the Problem

Let's consider a scenario where we have two spans that represent different sorting options: "The cheapest" and "The fastest." The requirement is simple: when one span is clicked, its state should be changed to active while the other span's state should revert to inactive.

Current Implementation

Here’s a basic outline of the existing code structure:

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

Optimizing the Approach

While the current method toggles the isActive state for each span element correctly, it can be improved for clarity and efficiency. Below is a streamlined approach that simplifies the state management.

Revised Solution

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

Breakdown of Changes

Simplified State: Instead of maintaining an isActive property for each span, we store only the currently selected span in the state. This reduces complexity and makes it easier to manage the state.

Direct State Update: The handleSorterClick function directly sets the selected state based on the span clicked. This promotes clarity and reduces the need for iterating through the spans to toggle their states.

Scalability: This approach allows for easy scalability. If you wish to add more spans, you simply need to add them to the sorterTabs array without modifying the state management logic.

Conclusion

Managing component states in React can be simplified by focusing on fewer state variables that encapsulate the desired behavior. By changing our approach from toggling states individually to selecting a single active state, we not only enhance the performance but also improve the code's readability and maintainability. Whether you're working with two spans or many more, this method will serve you well in building effective React components.

Implement this revised strategy in your projects, and enjoy a cleaner, more efficient React application!