Changelog

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

Ajax

• Don't treat array data as binary (992a1911)
• Allow processData: true even for binary data (ce264e07)
• Support binary data (including FormData) (a7ed9a7b)
• Support headers for script transport even when cross-domain (#5142, 6d136443)
• Support null as success functions in jQuery.get (#4989, 74978b7e)
• Don't auto-execute scripts unless dataType provided (#4822, 025da4dd)
• Make responseJSON work for erroneous same-domain JSONP requests (68b4ec59)
• Execute JSONP error script responses (#4771, a1e619b0)
• Avoid CSP errors in the script transport for async requests (#3969, 07a8e4a1)
• Drop the json to jsonp auto-promotion logic (#1799, #3376, e7b3bc48)
• Overwrite s.contentType with content-type header value, if any (#4119, 7fb90a6b)
• Deprecate AJAX event aliases, inline event/alias into deprecated (23d53928)
• Do not execute scripts for unsuccessful HTTP responses (#4250, 50871a5a)
• Simplify jQuery.ajaxSettings.xhr (#1967, abdc89ac)

Attributes

• Make .attr( name, false ) remove for all non-ARIA attrs (#5388, 063831b6)
• Shave off a couple of bytes (b40a4807)
• Don't stringify attributes in the setter (#4948, 4250b628)
• Drop the toggleClass(boolean|undefined) signature (#3388, a4421101)
• Refactor val(): don't strip carriage return, isolate IE workarounds (ff281991)
• Don't set the type attr hook at all outside of IE (9e66fe9a)

CSS

• Fix dimensions of table <col> elements (#5628, eca2a564)
• Drop the cache in finalPropName (640d5825)
• Tests: Fix tests & support tests under CSS Zoom (#5489, 071f6dba)
• Fix reliableTrDimensions support test for initially hidden iframes (b1e66a5f)
• Selector: Align with 3.x, remove the outer selector.js wrapper (53cf7244)
• Make the reliableTrDimensions support test work with Bootstrap CSS (#5270, 65b85031)
• Make offsetHeight( true ), etc. include negative margins (#3982, bce13b72)
• Return undefined for whitespace-only CSS variable values (#5120) (7eb00196)
• Don’t trim whitespace of undefined custom property (#5105, ed306c02)
• Skip falsy values in addClass( array ), compress code (#4998, a338b407)
• Justify use of rtrim on CSS property values (655c0ed5)
• Trim whitespace surrounding CSS Custom Properties values (#4926, efadfe99)
• Include show, hide & toggle methods in the jQuery slim build (297d18dd)
• Remove the opacity CSS hook (865469f5)
• Workaround buggy getComputedStyle on table rows in IE/Edge (#4490, 26415e08)
• Don't automatically add "px" to properties with a few exceptions (#2795, 00a9c2e5)

Core

• Remove obsolete workarounds, update support comments (e2fe97b7)
• Switch $.parseHTML from document.implementation to DOMParser (0e123509)
• Fix the exports setup to make bundlers work with ESM & CommonJS (#5416, 60f11b58)
• Add more info about named exports (5f869590)
• Simplify code post browser support reduction (93ca49e6)
• Move the factory to separate exports (46f6e3da)
• Use named exports in src/ (#5262, f75daab0)
• Fix regression in jQuery.text() on HTMLDocument objects (#5264, a75d6b52)
• Selector: Move jQuery.contains from the selector to the core module (024d8719)
• Drop the root parameter of jQuery.fn.init (d2436df3)
• Don't rely on splice being present on input (9c6f64c7)
• Manipulation: Add basic TrustedHTML support (#4409, de5398a6)
• Report browser errors in parseXML (#4784, 89697325)
• Make jQuery.isXMLDoc accept falsy input (#4782, fd421097)
• Drop support for Edge Legacy (i.e. non-Chromium Microsoft Edge) (#4568, e35fb62d)
• Fire iframe script in its context, add doc param in globalEval (#4518, 4592595b)
• Exclude callbacks & deferred modules in the slim build as well (fbc44f52)
• Migrate from AMD to ES modules 🎉 (d0ce00cd)
• Use Array.prototype.flat where supported (#4320, [9df4f1d](9df4f1de12728b44a4b0f91748...

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 updates (546a1eb0)
• Fix Chrome beta tests (ec738b31)
• Add periodic tests on beta versions of browsers (c28c26ae)
• Bump the github-actions group with 2 updates (f513413a)
• Update glob form 10.4.5 to 10.5.0 (4dbe321a)
• Upgrade all dev dependencies (except sinon & eslint) (9572ae8a)
• Update jtr to 0.2.8; fixes Edge in IE mode (5169d8f0)
• Verify release using dist repo tarball; Node 24.x (#5719) (dda0a022)
• Bump the github-actions group with 2 updates (#5718) (fa41fe50)
• Separate Node.js & Browser Tests, update tested Node.js versions (98cc8c83)
• Update browsers tested in BrowserStack (1c297241)
• Bump the github-actions group with 2 updates (d6c1e238)
• Migrate lockbot to GitHub Actions (ef743289)
• Simplify caching in CI, use npm ci (110e4657)
• Bump the github-actions group with 3 updates (607b25eb)
• Bump tmp and @inquirer/editor (9c84195b)

Docs

• Fix some minor issues in comments (e4d4dd81)
• update herodevs link in README (#5695, 093e63f9)

Release

• Update AUTHORS.txt (c128d5d8)
• Fix release issues uncovered during the 4.0.0-rc.1 release (a5b0c431)
• remove dist files from main branch (9d06c6dd)

Selector

• Remove the workaround for :has; test both on iPhone & iPad (65e35450)

Tests

• Fix the "outside view position" test in Headless Chrome (23d72cb1)
• Fix selector tests in Chrome 141 (25a1b080)
• Increase nomodule test timeout for IE from 1s to 5s (5eab0a3c)
• Fix module/nomodule tests flakiness (5964acf3)
• updated the vulnerability reporting process and added escalation steps (02cf4ee0)

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 instead of "latest-1" (958369f0)
• Bump github/codeql-action in the github-actions group (19621e99)
• Update the jQuery license link in comment headers (ec9a387e)
• Try to unpack Firefox ESR via xz, fall back to bzip2 (dc5d1f7c)
• Bump github/codeql-action in the github-actions group (0ef60202)
• Bump undici and release-it (b668be0f)
• Bump the github-actions group with 2 updates (bd6b453b)
• Bump the github-actions group with 3 updates (de2ecfc0)
• ESLint: Remove the outerIIFEBody exception to indent (50ca9571)
• Bump the github-actions group with 2 updates (447432f4)
• upgrade dependencies, including [email protected] (047f8683)
• Bump the github-actions group with 2 updates (667321eb)
• Bump the github-actions group across 1 directory with 2 updates (098591e6)
• Test on iOS 18, no longer test on iOS 15 (75b48e6a)
• Bump github/codeql-action from 3.27.0 to 3.27.5 in the github-actions group (03e183c4)
• Report Brotli sizes in compareSize (e4b5e622)
• Fix pre release matching in compare size regex (041f6e34)
• Make middleware-mockserver not crash on reading nonexistent files (d5ebb464)
• Bump the github-actions group with 4 updates (07c9f02b)
• Run tests on Node 22 & 23 (19716254)
• Enforce ECMAScript 5 in tests via ESLint (#5542, d74fc265)
• Bump the github-actions group with 3 updates (3ebe89f6)
• Bump rollup from 4.19.0 to 4.22.4 (147964e1)
• Bump webpack from 5.93.0 to 5.94.0 (3658caf1)
• Bump github/codeql-action from 3.25.15 to 3.26.6 in the github-actions group (a6feeaa7)
• align eslint config with 3.x branch as much as possible (7e6cee72)
• Bump the github-actions group with 2 updates (55bc35bc)
• upgrade dependencies, including requirejs to 2.3.7 (a7d3383e)
• use --input-type=module in npm scripts (57ef12e0)

CSS

• Fix dimensions of table <col> elements (#5628, eca2a564)
• Drop the cache in finalPropName (640d5825)

Core

• Remove obsolete workarounds, update support comments (e2fe97b7)
• Switch $.parseHTML from document.implementation to DOMParser (0e123509)

Docs

• Align CONTRIBUTING.md with 3.x-stable (d9281061)
• Update CONTRIBUTING.md (4ef25b0d)
• add version support section to README (cbc2bc1f)

Event

• Use .preventDefault() in beforeunload (7c123dec)

Manipulation

• Make jQuery.cleanData not skip elements during cleanup (#5214, 3cad5c43)

Release

• Run npm publish in the post-release phase (ff1f0eaa)
• Only run browserless tests during the release (fb5ab0f5)
• Temporarily disable running tests on release (3f79644b)
• publish tmp/release/dist folder when releasing (#5658, a865212d)
• correct build date in verification; other improvements (53ad94f3)
• remove dist files from main branch (be048a02)

Selector

• Properly deprecate jQuery.expr[ ":" ]/jQuery.expr.filters (329661fd)

Tests

• Use releases.jquery.com as external host for AJAX testing (f21a6ea6)
• Fix tests for jQuery.get( String, null-ish, null-ish, String ) (05325801)
• Add tests for jQuery.get( String, null-ish, null-ish, String ) (76687566)
• Backport the hidden="until-found" attr tests from 3.x-stable (3a31866b)
• migrate test runner to jquery-test-runner (733e62d2)
• Add custom attribute getter tests to the selector module (44667709)
• Switch to an updated fork of promises-aplus-tests (559bc5ac)
• Run tests in Edge in IE mode in GitHub Actions (6d78c076)
• Run tests on both real Firefox ESRs (4b7ecbad)
• align mock.php spacing with 3.x-stable branch (d5ae14f6)
• replace dead links in qunit fixture (dbc9dac7)
• replace express with basic Node server (c85454a8)

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)
• upgrade dependencies; fix bundler tests on windows (cb8ab6cc)
• improve specificity of eslint config; add ecma versions (74970524)
• Bump the github-actions group with 2 updates (46b9e480)
• Group dependabot PRs updating GitHub Actions (3cac1465)
• Bump actions/cache, actions/checkout & github/codeql-action (df1df950)
• Bump express from 4.18.3 to 4.19.2 (691c0aee)
• make compare size cache readable for manual edits (783c9d69)
• fix size comparison for slim files when the branch is dirty (8a3a74c4)
• migrate more uses of fs.promises; use node: protocol (ae7f6139)
• Bump github/codeql-action from 3.24.0 to 3.24.6 (ae67ace6)
• Bump actions/cache from 4.0.0 to 4.0.1 (68f772e0)
• drop support for Node 10 (5aa7ed88)
• add GitHub Actions workflow to update Filestash (0293d3e3)
• update jenkins script to only build (c21c6f4d)
• Bump actions/cache & github/codeql-action (#5402) (bf11739f)

CSS

• Tests: Fix tests & support tests under CSS Zoom (#5489, 071f6dba)

Core

• Fix the exports setup to make bundlers work with ESM & CommonJS (#5416, 60f11b58)

Docs

• Update remaining HTTP URLs to HTTPS (7cdd8374)

Event

• Increase robustness of an inner native event in leverageNative (#5459, 527fb3dc)

Offset

• Increase search depth when finding the 'real' offset parent (556eaf4a)

Release

• ensure builds have the proper version (3e612aee)
• set preReleaseBase in config file (1fa8df5d)
• fix running pre/post release scripts in windows (5518b2da)
• update AUTHORS.txt (862e7a18)
• migrate release process to release-it (jquery/jquery-release#114, 2646a8b0)
• add factory files to release distribution (#5411, 1a324b07)

Tests

• remove unnecessary scroll feature test (ea31e4d5)
• Align :has selector tests with 3.x-stable (f2d9fde5)
• revert concurrency group change (fa73e2f1)
• include github ref in concurrency group (5880e027)
• Make the beforeunload event tests work regardless of extensions (399a78ee)
• share queue/browser handling for all worker types (284b082e)
• improve diffing for values of different types (b9d333ac)
• show any and all actual/expected values (f80e78ef)
• add diffing to test reporter (44fb7fa2)
• add actual and expected messages to test reporter (1e84908b)
• fix worker restarts for failed browser acknowledgements (fedffe74)
• add --hard-retries option to test runner (822362e6)
• fix cleanup in cases where server doesn't stop (0754d596)
• fix flakey message logs; ignore delete worker failures (02d23478)
• reuse browser workers in BrowserStack tests (#5428) (95a4c94b)
• Use allowlist instead of whitelist (2b97b6bb)
• migrate testing infrastructure to minimal dependencies (dfc693ea)
• Fix Karma tests on Node.js 20 (d478a1c0)

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/