How to Swap Divs and Center a Selected Div in HTML & JavaScript

Learn how to easily `swap divs` in HTML with JavaScript, placing your selected div right at the center for better organization and user interactivity.
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How to Swap Divs and Center a Selected Div in HTML & JavaScript

When developing interactive web pages, you might often find yourself needing to swap the positions of elements based on user interactions. A common scenario is when you have multiple <div> elements that you want to manipulate with a simple click. In this guide, we will learn how to swap three divs in such a way that the selected one moves to the center. This will not only enhance user experience but also improve the visual organization of your content.

Understanding the Problem Statement

Let's break down the problem:

You have three <div> elements (let's call them div1, div2, and div3) displayed in a row.

When a user clicks any of the divs, that clicked div should move to the center of the group.

For example, if the initial arrangement is 1 2 3 and the user clicks on 3, the result should reorganize to 1 3 2. If the user clicks on 1 afterward, it should change to 3 1 2.

The Proposed Solution

To achieve this effect, we'll use JavaScript and a small amount of HTML. Below, I detail the required code along with an explanation of each part.

HTML Structure

First, we set up our HTML structure with three divs wrapped in a container. Each div has an onclick event that triggers the swap function.

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

JavaScript Function

Now, we need to create a JavaScript function swapDiv that handles the swapping of the divs. Here's how the function is structured:

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

Explanation of the Code

Identify the Center Div: The line const centerElem = allElements[1]; always retrieves the div currently located at the center.

Check for Center Click: If a user clicks on the center div, the function will exit gracefully to prevent any unnecessary actions.

Swap Contents:

Conclusion

With this setup, you have implemented a simple yet effective way to swap divs based on user interaction and keep the selected div centered. This not only adds a dynamic element to your webpage but also enhances the overall user experience. Try integrating this example into your projects and see how it can improve your design!

By following these steps, you'll have a fully functional swap feature that can enhance your front-end work in no time!