Sohu Tech Products

Feb 22, 2023 · Frontend Development

Using the CSS Custom Highlight API for Text Highlighting, Rainbow Text, Search Highlight, and Code Editors

This article introduces the browser‑native CSS Custom Highlight API, explains its pseudo‑element ::highlight, shows how to create ranges and Highlight objects with JavaScript, and demonstrates practical examples such as custom text styling, rainbow text, live search highlighting, performance comparisons, and a lightweight code‑highlight editor.