jQuery 4.0.0

Breaking Changes

• Dropped browser support: IE <11, iOS <11, Firefox <65, Android Browser, PhantomJS
• Dropped Edge Legacy (non-Chromium Microsoft Edge)
• Removed deprecated APIs — jQuery.trim(), jQuery.cache, toggleClass(boolean|undefined) signature, jQuery.event.global
• AJAX: Removed json→jsonp auto-promotion — explicit dataType: "jsonp" now require...

Changelog

https://blog.jquery.com/2026/01/17/jquery-4-0-0/

Build

• De-dupe three authors via mailmap (5fe9c298)
• Post beta browser tests errors to jquery/dev on Matrix (afdd032f)
• Bump the github-actions group with 4 updat...

Changelog

https://blog.jquery.com/2025/08/11/jquery-4-0-0-release-candidate-1/

Build

• Make the sed usage portable across Linux & macOS (a848611f)
• Bump form-data from 4.0.2 to 4.0.4 (70ee64fc)
• Test on Safari 18 & 17 inst...

Changelog

https://blog.jquery.com/2024/07/11/second-beta-of-jquery-4-0-0/

Attributes

• Make .attr( name, false ) remove for all non-ARIA attrs (#5388, 063831b6)

Build

• Bump the github-actions group with 2 updates ([3a98ef91](https://github.co...

https://blog.jquery.com/2024/02/06/jquery-4-0-0-beta/

https://blog.jquery.com/2023/08/28/jquery-3-7-1-released-reliable-table-row-dimensions/

https://blog.jquery.com/2023/05/11/jquery-3-7-0-released-staying-in-order/

https://blog.jquery.com/2023/03/08/jquery-3-6-4-released-selector-forgiveness/

https://blog.jquery.com/2022/12/20/jquery-3-6-3-released-a-quick-selector-fix/

https://blog.jquery.com/2022/12/13/jquery-3-6-2-released/