Add fancy syntax highlighting to your regexes in blogs, docs, and regex testers. Supports the JavaScript regex flavor (ES2024) with web reality. In other words, it highlights regexes as web browsers actually interpret them. Syntax changes activated by flags u and v are not yet supported.
The API is simple. Just give the elements that contain your regexes (pre, code, or whatever) the class regex, and call a couple functions (see below).
Errors are highlighted, along with some edge cases that can cause cross-browser grief. Hover over errors for a description of the problem.
Size: 3.4 KB min/gzip, with no dependencies.
Several themes are provided as stylesheets, and you can easily create your own. You don't need any stylesheet to use the default theme.
// Don't run this line if you provide your own stylesheet
RegexColorizer.addStyleSheet();
// Can provide a class name for elements to process (defaults to 'regex')
RegexColorizer.colorizeAll();There is also RegexColorizer.colorizeText() that returns HTML with highlighting for the provided regex pattern string.
See the demo page for more details.