jsdom

Issues somebody may already be working on are listed last. List everything by date

• Create implementation exceptions in the correct realm

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  jsdom/jsdom#4326 · Opened Sep 17, 2026

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• Make generated JavaScript identifiers hygienic

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/webidl2js#286 · Opened Sep 8, 2026

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• Duplicated Content-Type header silently mojibakes the document, or throws

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  Difficulty 3/5 1-2 days Newbie friendliness 48/100

  jsdom/jsdom#4277 · 4 comments · Opened Sep 4, 2026

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• PointerEvent added in v27 without setPointerCapture/releasePointerCapture/hasPointerCapture — is that API planned?

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  Difficulty 3/5 1-2 days Newbie friendliness 58/100

  jsdom/jsdom#4271 · 1 comment · 1 reaction · Opened Sep 3, 2026

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• Implement Blob.prototype.stream() and inherited File.prototype.stream()

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  Difficulty 4/5 3-5 days Newbie friendliness 55/100

  jsdom/jsdom#4197 · 2 comments · 1 reaction · Opened Jul 28, 2026

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• Implement CookieStore API

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  Difficulty 5/5 Over a week Newbie friendliness 45/100

  jsdom/jsdom#4167 · 1 comment · 3 reactions · Opened May 15, 2026

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• jsdom XPath public API throws uncaught TypeError for valid expression

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  xpath

  Difficulty 3/5 1-2 days Newbie friendliness 74/100

  jsdom/jsdom#4147 · 2 comments · Opened Apr 17, 2026

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• Further internal resource loader cleanup

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  jsdom/jsdom#4039 · Opened Feb 2, 2026

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• Implement screen orientation API

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#4007 · Opened Dec 26, 2025

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• Cannot parse www.google.com

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  css real world problem

  Difficulty 3/5 1-2 days Newbie friendliness 52/100

  jsdom/jsdom#4002 · 1 comment · 1 reaction · Opened Dec 20, 2025

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• Performance regression in `getComputedStyle()`

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  css performance

  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  jsdom/jsdom#3984 · 6 comments · 3 reactions · Opened Nov 12, 2025

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• JSDOM-thrown `DOMException`s pass `instanceof globalThis.Error` but fail `Error.isError`

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  Difficulty 4/5 3-5 days Newbie friendliness 48/100

  jsdom/jsdom#3973 · 1 reaction · Opened Oct 27, 2025

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• Implement `Element`'s `getHTML()`

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  jsdom/jsdom#3955 · 1 comment · 2 reactions · Opened Oct 17, 2025

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• requestIdleCallback is not defined

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  Difficulty 3/5 1-2 days Newbie friendliness 48/100

  jsdom/jsdom#3943 · Opened Oct 5, 2025

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• Implement [ReflectSetter] IDL extended attribute

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3913 · Opened Jul 28, 2025

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• Support mutually exclusive `<details>` behavior via `name` attribute

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  jsdom/jsdom#3911 · Opened Jul 21, 2025

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• Implement `computedStyleMap()`

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/jsdom#3898 · Opened Jul 7, 2025

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• Search tag is not recognised

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  Difficulty 2/5 1-3 hours Newbie friendliness 45/100

  jsdom/jsdom#3882 · 1 comment · 6 reactions · Opened May 19, 2025

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• Implement ToggleEvent: newState and oldState properties

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  Difficulty 3/5 1-2 days Newbie friendliness 52/100

  jsdom/jsdom#3879 · Opened May 14, 2025

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• Implement CSS container queries

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  css

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3858 · 2 comments · 2 reactions · Opened Apr 13, 2025

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• Implement `OffscreenCanvas` class

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  jsdom/jsdom#3856 · 2 reactions · Opened Apr 10, 2025

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• Implement `Element`'s `getAnimations()` method

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/jsdom#3852 · 1 comment · 1 reaction · Opened Apr 1, 2025

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• Implement `:modal` pseudo-class

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  selectors

  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  jsdom/jsdom#3851 · 3 comments · 2 reactions · Opened Mar 31, 2025

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• Implement ElementInternals setFormValue()

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3831 · 5 reactions · Opened Feb 14, 2025

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• Selection.addRange and document.activeElement

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3825 · Opened Jan 27, 2025

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• Implement `formdata` event

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  Difficulty 3/5 1-2 days Newbie friendliness 55/100

  jsdom/jsdom#3799 · 1 comment · 6 reactions · Opened Dec 5, 2024

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• 403 on some websites behind cloudflare

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  real world problem

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  jsdom/jsdom#3764 · Opened Aug 20, 2024

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• Implement ElementInternals setValidity()

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  jsdom/jsdom#3758 · 3 reactions · Opened Aug 6, 2024

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• changing `playbackRate` to an invalid value should throw NotSupportedError

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  jsdom/jsdom#3731 · Opened Jun 9, 2024

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• Implement getClientRects() and getBoundingClientRect()

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3729 · 1 comment · 8 reactions · Opened Jun 5, 2024

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• Implement popover attribute and related APIs

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  Difficulty 4/5 3-5 days Newbie friendliness 45/100

  jsdom/jsdom#3721 · 7 comments · 32 reactions · Opened May 22, 2024

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• Implement `PerformanceObserver`, `performance.measure()` and `performance.mark()`

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/jsdom#3713 · 7 reactions · Opened May 7, 2024

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• jsdom behaves inconsistently with browser DOM in some cases

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  xpath

  Difficulty 3/5 1-2 days Newbie friendliness 42/100

  jsdom/jsdom#3708 · Opened May 6, 2024

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• Provide a `waitUntilComplete()` method to help testing frameworks detect pending tasks

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  jsdom/jsdom#3696 · 1 reaction · Opened Mar 21, 2024

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• Implement Element checkVisibility()

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  Difficulty 4/5 3-5 days Newbie friendliness 32/100

  jsdom/jsdom#3695 · 1 comment · 28 reactions · Opened Mar 21, 2024

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• `runScripts: 'dangerously'` changes the output of `Object.getOwnPropertyNames(jsdom.window)`

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3688 · 2 comments · Opened Mar 1, 2024

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• JSDOM fails in real-world environments like reddit, and youtube/rumble watch page

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  jsdom/jsdom#3685 · 1 reaction · Opened Feb 23, 2024

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• Implement MediaRecorder

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/jsdom#3664 · 4 reactions · Opened Jan 17, 2024

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• scripts inside svg are not executed

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  jsdom/jsdom#3619 · 1 reaction · Opened Nov 20, 2023

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• Implement WebGL

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  Difficulty 5/5 Over a week Newbie friendliness 20/100

  jsdom/jsdom#3617 · 1 comment · 1 reaction · Opened Nov 4, 2023

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• Documentation request: jsdom + testing. Browser-based test frameworks only?

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  Difficulty 3/5 1-2 days Newbie friendliness 30/100

  jsdom/jsdom#3608 · Opened Oct 14, 2023

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• Implement `inert=""`

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  Difficulty 3/5 1-2 days Newbie friendliness 45/100

  jsdom/jsdom#3605 · 2 comments · 13 reactions · Opened Oct 8, 2023

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• JSDOM does not render items inserted by XHR

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  jsdom/jsdom#3598 · 1 reaction · Opened Sep 19, 2023

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• Documentation Request: use cases for the "Debugging the DOM using Chrome DevTools" section

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  Difficulty 2/5 Half a day Newbie friendliness 48/100

  jsdom/jsdom#3587 · Opened Aug 18, 2023

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• Should JSDOM default `isSecureContext` to `true`?

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  Difficulty 5/5 Over a week Newbie friendliness 35/100

  jsdom/jsdom#3577 · 1 comment · Opened Jul 10, 2023

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• Implement the File System Access API

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  jsdom/jsdom#3570 · 8 reactions · Opened Jul 1, 2023

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• Implement `Document` `fonts`

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  jsdom/jsdom#3564 · 1 reaction · Opened Jun 7, 2023

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• Implement Window matchMedia()

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  Difficulty 4/5 3-5 days Newbie friendliness 42/100

  jsdom/jsdom#3522 · 3 comments · 14 reactions · Opened Mar 21, 2023

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