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Machine Coding#3: Building an Infinite Image Carousel with Vanilla JavaScript
9 min read6 days ago
An image carousel looks simple on the surface:
Click Next → show the next image.
But once you add infinite looping, autoplay, navigation dots, keyboard support, and smooth animations, a few interesting frontend problems appear.
Press enter or click to view image in full size![]()
One of the most common problems is:
What should happen when we move from the last image back to the first?
A naive implementation often produces an ugly animation where the carousel suddenly moves backward across all the images.
In this article, we’ll build a smooth, infinite image carousel using HTML, CSS, and vanilla JavaScript.
What We Are Building
Our carousel will support:
- Next / Previous buttons
- Navigation dots
- Infinite looping
- Smooth transitions
- Autoplay
- Pause on hover
