How to Create Movable and Resizable DIV Elements in HTML and JavaScript

Описание: Discover how to create multiple `movable` and `resizable` div elements using HTML and JavaScript. Follow our guide to achieve your web design goals!
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This video is based on the question https://stackoverflow.com/q/67865440/ asked by the user 'Nickola' ( https://stackoverflow.com/u/16149076/ ) and on the answer https://stackoverflow.com/a/67865728/ provided by the user 'Ranjith U K' ( https://stackoverflow.com/u/9355542/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Creating Movable and Resizable DIV Elements in HTML and JavaScript

If you’re embarking on a journey to create a dynamic webpage with interactive elements, you might be encountering some challenges while trying to make your DIV elements both movable and resizable. In this guide, we’ll help you understand how to tackle these issues effectively, enabling you to create a clean, user-friendly interface.

The Problem

The objective is to design a webpage that features at least four different window elements, which can be resized and moved around. However, the initial implementation reveals a critical issue:

When both DIVs share the same ID, only one is movable, while resizing works for both.

If different IDs are assigned, the behavior switches; now both can move, but only one resizes.

This inconsistency arises because of how JavaScript interacts with the elements in the DOM. Let’s break down how to fix these problems step by step.

The Solution

To achieve a setup where each DIV is both movable and resizable, you need to make a few adjustments to your existing code. Here's a revised outline of the steps to follow:

Step 1: Correcting JavaScript Functions

The issue primarily stems from the way you handle drag events. You currently call a separate function dragElement2, which is not properly defined. Instead, you should use a single function that applies to both elements with appropriate IDs.

Update the Drag Element Function

Here’s how your dragElement function should look:

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

Step 2: Unique IDs for the Headers

For successful execution, each header needs to have a unique ID to validate against when dragging. You can accomplish this by defining mydiv2header for the second DIV:

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

Step 3: CSS Adjustments

Ensuring that both DIVs maintain consistent styling while being able to resize is also key. Any unique styles necessary for your layout can be defined in your CSS:

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

Conclusion

By ensuring each DIV has its unique drag function and header ID, your goal of creating multiple movable and resizable windows can be achieved smoothly. These modifications lay the groundwork for scaling your project to include more than four windows, while maintaining functionality and user experience without compromise.

We hope this guide helps you on your journey to building an interactive and visually appealing webpage. Happy coding!