Changing Your Image in React: The Easy Way to Toggle with onClick

Struggling with image toggling in your React app? Learn how to change images when clicking on them using React Hooks!
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This video is based on the question https://stackoverflow.com/q/74540142/ asked by the user 'Nexushash' ( https://stackoverflow.com/u/12436148/ ) and on the answer https://stackoverflow.com/a/74540409/ provided by the user 'Prince Hernandez' ( https://stackoverflow.com/u/6476488/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Transforming Your Image on Click in React

If you're new to React and are looking to add interactivity to your applications, you've probably encountered the need to change images based on user actions, like clicks. This guide will guide you through a common scenario: toggling an image when it is clicked. Specifically, we will explore how to switch between two images (like "ADD" and "ADDED") upon a click event using the useState hook. Let’s dive in!

Problem Overview

You have a basic React component where you want to change the source of an image when it is clicked. You may have attempted various approaches and turned to different resources online but found yourself encountering errors without finding a suitable solution. Let’s simplify that process!

Your Initial Setup

Here is the foundational structure you have, which consists of an image that you want to toggle:

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The challenge is implementing the onClick function to toggle between two images (add and added), but you aren't quite sure how to do that yet.

Solution: Using useState to Track Image State

In React, the useState hook makes it easy to create state variables that can change over time. For toggling images on click, we will set up a state variable that stores which image to display. Here’s a step-by-step breakdown of how to achieve this.

Step 1: Import Required Modules

Make sure to import useState from React, along with your image sources, like so:

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Step 2: Set Up State Variable

Inside your Profile component, initialize a state variable to keep track of the image being displayed.

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Step 3: Create the Click Handler

Next, write a function that will toggle the image whenever the user clicks on it. This function checks the current state and switches it accordingly:

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Step 4: Update the Image Source in JSX

Then, modify the img element to use the state variable for its src attribute. Below is how you can implement this in the return statement of your component:

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Final Code Structure

Here’s how your complete Profile component should look after incorporating the above suggestions:

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Conclusion

And there you have it! You now have an interactive image that toggles between two states on click, all thanks to the useState hook in React. This pattern can be applied to various use cases in your applications whenever you need to manage and respond to user interactions. Keep experimenting and enhancing your React skills, and soon you'll feel like a pro!

If you have any questions or thoughts, feel free to leave a comment below. Happy coding!