Name Description Size
adopted-callback.html Custom Elements: adoptedCallback 7678
attribute-changed-callback.html Custom Elements: attributeChangedCallback 13522
builtin-coverage.html 8238
connected-callbacks-html-fragment-parsing.html Custom Elements: the HTML fragment parsing algorithm must not create a custom element synchronously 1914
connected-callbacks-template.html 1191
connected-callbacks.html Custom Elements: connectedCallback 3752
cross-realm-callback-report-exception.html Exceptions raised in constructors / lifecycle callbacks are reported in their global objects 2876
custom-element-reaction-queue.html Custom Elements: Each element must have its own custom element reaction queue 8442
custom-element-registry
CustomElementRegistry-constructor-and-callbacks-are-held-strongly.html CustomElementInterface holds constructors and callbacks strongly, preventing them from being GCed if there are no other references 2849
CustomElementRegistry-getName.html Custom Elements: CustomElementRegistry.getName function 3326
CustomElementRegistry.html Custom Elements: CustomElementRegistry interface 40852
customized-built-in-constructor-exceptions.html Customized built-in element constructor behavior 3402
disconnected-callbacks.html Custom Elements: disconnectedCallback 4033
Document-createElement-customized-builtins.html Custom Elements: document.createElement should create a customized builtin element with synchronous custom elements flag set 4399
Document-createElement-svg.svg 1139
Document-createElement.html Custom Elements: document.createElement should create an element with synchronous custom elements flag set 15021
Document-createElementNS-customized-builtins.html Custom Elements: document.createElementNS should support custom elements 1993
Document-createElementNS.html Custom Elements: document.createElementNS should support custom elements 2011
element-internals-aria-element-reflection.html Element Reflection for aria-activedescendant and aria-errormessage on ElementInternals 10025
element-internals-shadowroot.html ElementInternals.shadowRoot 5185
ElementInternals-accessibility.html 2093
ElementInternals-accessibility.tentative.html 829
ElementInternals-role.html 5590
enqueue-custom-element-callback-reactions-inside-another-callback.html Custom Elements: must enqueue an element on the appropriate element queue after checking callback is null and the attribute name 9502
form-associated
historical.html Custom Elements v0 features 1375
htmlconstructor
HTMLElement-attachInternals.html 3433
HTMLElement-constructor-customized-builtins.html Custom Elements: HTMLElement must allow subclassing 2449
HTMLElement-constructor.html Custom Elements: HTMLElement must allow subclassing 8465
META.yml 166
microtasks-and-constructors.html Custom elements: performing a microtask checkpoint after construction 3514
overwritten-customElements-global.html 2286
parser
perform-microtask-checkpoint-before-construction-xml-parser.xhtml Custom Elements: create an element for a token must perform a microtask checkpoint 3383
perform-microtask-checkpoint-before-construction.html Custom Elements: create an element for a token must perform a microtask checkpoint 6311
prevent-extensions-crash.html Check for crash at step #12 of HTML Constructors 525
pseudo-class-defined-customized-builtins.html 3665
pseudo-class-defined-print-ref.html 117
pseudo-class-defined-print.html 383
pseudo-class-defined.html 4532
range-and-constructors.html Custom elements: Range APIs should invoke constructor in tree order 1655
reaction-timing.html Custom Elements: Custom element reactions must be invoked before returning to author scripts 4194
reactions
resources
scoped-registry
state
throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml Custom Elements: create an element for a token must increment and decrement document's throw-on-dynamic-markup-insertion counter 7406
throw-on-dynamic-markup-insertion-counter-construct.html Custom Elements: create an element for a token must increment and decrement document's throw-on-dynamic-markup-insertion counter 6982
throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml Custom Elements: create an element for a token must increment and decrement document's throw-on-dynamic-markup-insertion counter 7602
throw-on-dynamic-markup-insertion-counter-reactions.html Custom Elements: create an element for a token must increment and decrement document's throw-on-dynamic-markup-insertion counter 7414
upgrading
upgrading.html Custom Elements: Enqueue a custom element upgrade reaction 13578
WEB_FEATURES.yml 806
when-defined-reentry-crash.html Check for crashes when a whenDefined promise resolving re-entries 795
xhtml-crash.xhtml 397