Name Description Size Coverage
adopted-callback.html Custom Elements: adoptedCallback 7678 -
attribute-changed-callback.html Custom Elements: attributeChangedCallback 13522 -
behaves-like-button-with-command.tentative.html 9259 -
behaves-like-button-with-popover.tentative.html 5935 -
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 10619 -
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 40855 -
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 12941 -
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 historical features 838 -
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 154 -
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 162 -
pseudo-class-defined-print.html 428 -
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 -
registries -
resources -
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 1126 -
when-defined-reentry-crash.html Check for crashes when a whenDefined promise resolving re-entries 795 -
xhtml-crash.xhtml 397 -