Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 131, Firefox 133

• core-js: String.prototype.matchAll, Symbol.matchAll, and RegExp.prototype[Symbol.matchAll] added

• Implementation of Plugin/PluginArray/MimeType/MimeTypeArray updated

• Upgrade Apache commons-io to 2.18.0

• DOMTokenList add()/remove() are able to handle an arbitrary amount of tokens

• document.all == undefined and document.all == null now returns true

• performance improvements and micro optimizations

• as usual a bunch of improvements and fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.6.0...4.7.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 130, Firefox 132

• core-js: fixes for default values in destructuring assignments; fixes for optional chain and nullish coalesce

• core-js: support optional chaining for function calls, as well as the "eval" case like 'f?.()'

• core-js: nullish assignment operator '??=' implemented

• performance improvements for the DOM parsing/construction

• as usual a bunch of improvements and fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.5.0...4.6.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 129, Firefox 131, FirefoxESR 128

• core-js: optional chaining operator '?.' support added

• core-js: Support for default parameters added

• core-js: Support for nullish coalescing operator '??' added.

• core-js: Support for logical assigment operators '||=' and '&&=' added.

• core-js: many minor improvements and fixes

• FormData improved

• WorkerNavigator and WorkerLocation implemented; WebWorker context setup fixed, all API's now available.

• as usual a bunch of improvements and fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.4.0...4.5.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 127, Firefox 128

• XMLHttprequest got many fixes and improvements

• core-js: various missing methods in TypedArray added

• core-js: computed properties support added

• core-js: many small improvements

• handling of FieldSets in forms improved

• ComputedCSSStyleDeclaration.display takes care of the hidden attribute

• as usual a bunch of fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.3.0...4.4.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 126, Firefox 127

• core-js: improved 'const' handling

• many localization ralated fixes/improvments

• improved innerHTML content parsing for special tags like title, textarea, style, and script.

• DocumentFragment append()/prepend()/replaceChildren() added.

• XPathEvaluator.createExpression() and XPathExpression.evaluate() added

• as usual a bunch of fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.2.0...4.3.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 125, Firefox 126

• improved fragment parsing

• function Element.getHTML() added for Chrome/Edge

• handling of Attachments is improved. Now we treat responses only haven and Content-Type header of application/octetstream in the same way as if the Content-Disposition header was set to attachment. This is was real browsers also do

• prevent iframes from loading local resource for security reason (reading local file resources is still allowed if the enclosing document itself was loaded from file)

• prevent XMLHttpRequest from loading local resource for security reason.

• as usual a bunch of fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.1.0...4.2.0

Highlights

• This release is not compatible with 3.xx versions

• Chrome/Edge 124, Firefox 125

• some deprecations to prepare moving to HTTP/2

• improved encoding support (based on improvements done for the neko html parser)

• as usual some core-js fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 4.0.0...4.1.0

Highlights

• This release is not compatible with 3.xx versions

• Internet Explorer is no longer supported

• Chrome/Edge 123, Firefox 124

• new subproject htmlunit-websocket-client

• many fixes for the neko html parser

• improved encoding support

• as usual some core-js fixes

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Full Changelog: 3.11.0...4.0.0

Highlights

• This release is not compatible with 2.xx versions - please read the migration info

• Chrome/Edge 121, Firefox 122

• many fixes for the neko html parser, also some performance improvements

• as usual some core-js fixes

• detection and reporting of obsolete mime types for javascript files has changed to be in sync with the spec and the current practice

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).

Highlights

• This release is not compatible with 2.xx versions - please read the migration info

• Chrome/Edge 120, Firefox 120

• many fixes for the neko html parser, rewritten script tag content parsing and better comment handling, unknown elements are always moved to the body, and many more

• core-js tons of fixes and improvements

• String.includes/startsWith/endsWith no longer throws a TypeError when the first argument is a regex and Symbol.match of that regex has been set to false

• String.prototype.replaceAll implemented

• RegExp.dotAll flag implemented

• Symbol.iterator property is now available on CSSStyleDeclaration/ComputedCSSStyleDeclaration

• many more fixes and improvements

Please have a look at the full release notes for details about this release.

💕 Thank you to all who have contributed and to the sponsors (more sponsoring is welcome https://github.com/sponsors/rbri).