Issues

• Browsers don't agree on mutation records for .append(documentFragment)

  needs teststopic: mutation observers
  whatwg/dom#1509 · Filter by author Jamesernator opened on Oct 8, 2026
  1

• Processing instruction attribute map follow-ups

  whatwg/dom#1504 · Filter by author annevk opened on Oct 4, 2026
  3

  

• Make preventDefault reserve undo history saving option

  addition/proposalneeds implementer interest
  whatwg/dom#1501 · Filter by author NagayamaToshiaki opened on Sep 1, 2026
  2

• Scope-match a selectors string including a pseudo-element selector

  integration
  whatwg/dom#1497 · Filter by author cdoublev opened on Jul 21, 2026
  1

• [meta] Extending DOM APIs to support shadow roots tracking issue

  addition/proposaltopic: shadow
  whatwg/dom#1475 · Filter by author LeaVerou opened on Jun 25, 2026
  

• Add builtin method to calulate line wrapping

  addition/proposalneeds implementer interest
  whatwg/dom#1472 · Filter by author remcohaszing opened on Jun 19, 2026
  1

• OpaqueRange: cross-post from whatwg/html#11478 for DOM community input

  topic: ranges
  whatwg/dom#1468 · Filter by author stephanieyzhang opened on May 28, 2026

• importNode should allow null customElementRegistry

  addition/proposalneeds implementer interest
  whatwg/dom#1463 · Filter by author sorvell opened on Apr 24, 2026
  4

• AbortSignal.timeout() only aborts from a task

  topic: aborting
  whatwg/dom#1461 · Filter by author nstepien opened on Mar 22, 2026
  5

• Support Temporal.Duration as an argument to timeout-related APIs

  addition/proposalneeds implementer interest
  whatwg/dom#1458 · Filter by author lgarron opened on Mar 15, 2026
  3

• Document AbortController removal and some improvements

  topic: aborting
  whatwg/dom#1449 · Filter by author marcoscaceres opened on Feb 5, 2026
  1

• Implementations do not match spec behavior for .adoptNode(attr)

  topic: nodes
  Bug

  whatwg/dom#1440 · Filter by author Jamesernator opened on Dec 15, 2025
  2

• [meta] MutationObserver improvements tracking issue

  topic: mutation observers
  whatwg/dom#1439 · Filter by author LeaVerou opened on Dec 13, 2025
  6

• adoptNode() needs to account for <iframe> and friends

  topic: nodes
  whatwg/dom#1428 · Filter by author annevk opened on Nov 26, 2025

• Option to allow querySelector to query shadow roots

  addition/proposalneeds implementer interesttopic: shadow
  whatwg/dom#1422 · Filter by author LeaVerou opened on Nov 14, 2025
  10

• Allow createCDATASection() in HTML documents

  addition/proposalneeds implementer interest
  whatwg/dom#1420 · Filter by author meiqinyan opened on Nov 6, 2025
  1

• Allow MutationObserver to observe across <slot>s

  addition/proposalneeds implementer interesttopic: mutation observers
  whatwg/dom#1415 · Filter by author jpzwarte opened on Oct 21, 2025
  4

• Proposal: moveOrInsertBefore()

  addition/proposalneeds implementer interest
  whatwg/dom#1406 · Filter by author justinfagnani opened on Sep 29, 2025
  10

• Disposable AbortController

  addition/proposalneeds implementer interesttopic: aborting
  whatwg/dom#1405 · Filter by author bakkot opened on Sep 24, 2025
  5

• Proposal: new API to get text content across shadowRoot

  addition/proposalneeds implementer interesttopic: nodestopic: shadow
  whatwg/dom#1395 · Filter by author woody-li opened on Jul 28, 2025
  6

• Ability to wait for async abort algorithms?

  addition/proposaltopic: aborting
  whatwg/dom#1389 · Filter by author saschanaz opened on Jul 14, 2025
  4

• preventDefault and stopPropagation in the addEventListener options bag

  addition/proposalneeds implementer interesttopic: events
  whatwg/dom#1378 · Filter by author nicolo-ribaudo opened on Jun 4, 2025
  1

• Proposal: Bulk mutation methods for working with ranges of nodes

  addition/proposalneeds implementer interesttopic: nodes
  whatwg/dom#1369 · Filter by author justinfagnani opened on Apr 14, 2025
  4

• Proposal: Enable Custom Form Controls to (Optionally) Conceal Internal/Irrelevant Events

  addition/proposalneeds implementer interesttopic: custom elementstopic: events
  whatwg/dom#1368 · Filter by author ITenthusiasm opened on Apr 9, 2025
  4

• Naming of Composed Range

  topic: rangestopic: shadow
  whatwg/dom#1363 · Filter by author dizhang168 opened on Mar 7, 2025
  17