Overview
Rainbow is a JavaScript library designed to provide syntax highlighting for code snippets displayed on websites. It's built to be lightweight, easily integrated, and highly customizable through CSS themes. The library works by identifying code blocks within a webpage, typically marked with `<pre>` and `<code>` tags, and then applying syntax highlighting based on the specified language. It uses regular expressions to identify different code elements, wrapping them in `<span>` tags that can be styled with CSS. Rainbow supports a variety of programming languages and is easily extensible to support new ones. It's particularly useful for developers and technical bloggers who want to showcase code examples in a visually appealing and readable format, enhancing the user experience on their sites.