How to Create an Animated Accordion with Arrow Rotation Using HTML, CSS, and JavaScript

Learn how to easily implement a stylish, animated `accordion` feature that not only smoothly reveals content but also rotates an arrow symbol upon toggling the sections.
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This video is based on the question https://stackoverflow.com/q/67118068/ asked by the user 'Vladd Cantor' ( https://stackoverflow.com/u/15497195/ ) and on the answer https://stackoverflow.com/a/67118593/ provided by the user 'dale landry' ( https://stackoverflow.com/u/1533592/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How do I make a working accordion and animate the height of the content and the rotation of the arrow symbol?

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How to Create an Animated Accordion with Arrow Rotation Using HTML, CSS, and JavaScript

Creating a seamless and engaging user experience can be easy with the right tools. One popular way to organize and display content on your website is by using an accordion. An accordion presents information in a compact form, allowing users to expand sections as needed. In this guide, we will delve into how to create a working accordion that not only animates the height of its content but also rotates an arrow symbol.

Understanding the Problem

Many developers face challenges when trying to implement dynamic features like an animated accordion. Common issues include:

Animating Height: It can be tricky to manage height transitions with CSS, especially when dealing with dynamic content.

Arrow Rotation: Ensuring that an arrow icon smoothly rotates when expanding or collapsing sections.

Correct JavaScript Function Calls: Debugging JavaScript can become complicated when using incorrect or mixed function syntax.

In this guide, we'll address the above issues and walk through the process step-by-step.

Step-by-Step Solution

1. HTML Structure

To create our accordion, we will start with a basic HTML structure. Here’s how it looks:

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

Explanation:

The checkbox input acts as a trigger for expanding and collapsing the accordion.

The label interacts with the checkbox and contains the arrow symbol for rotation.

2. CSS Styles

Next, we will add CSS to manage the styles and transitions for our accordion.

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

Explanation:

The accordion's height is set to 0 initially to hide the contents.

The arrow rotates smoothly with the help of CSS transitions.

3. JavaScript Functionality

To tie everything together, we will write JavaScript to toggle the accordion and animate the arrow.

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

Explanation:

We add an event listener on the checkbox to trigger the toggle function whenever its state changes.

The accordionToggle function checks if the accordion is expanded or collapsed and modifies the height accordingly, while also handling the rotating arrow.

Conclusion

Creating a functional accordion that includes height animation and arrow rotation is achievable with just a few lines of HTML, CSS, and JavaScript. By following the steps outlined above, you can easily implement this feature into your web projects, enhancing the user experience and visual appeal.

Now you are equipped with the knowledge to create an interactive accordion. Happy coding!

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