Library
jQuery 4.0
byOpenJS Foundation
Released on January 17, 2026
Release Summary
Major release with modernized codebase, dropped IE support, and improved performance.
Timeline
January 17, 2026
Official release
jQuery 4.0.0 launches on the library's 20th anniversary, marking the first major version in nearly 10 years.
July 17, 2024
Second beta release
Second beta addresses feedback, removes deprecated APIs like jQuery.isArray() and jQuery.parseJSON().
February 6, 2024
First beta release
jQuery 4.0.0 beta launches with major changes: dropped IE10 support, migrated to ES modules.