They may include fancy sliders, pop-up windows, and other cool features. In this tutorial, we are going to cover how to build a simple thumbnail viewer using JavaScript. We are not going to include a lot of bells and whistles. This simple design is intended to be used for projects that require a simple solution.
HTML, CSS, and JavaScript Code
The image in the “preview window” can be changed as your mouse moves over the thumbnail images. If you prefer to have the preview image updated when the mouse is clicked, simply change the onmouseover event to onclick. So, for example, onmouseover=“preview(this)” will be changed to onclick=“preview(this)”.
