Custom Elements
E856206
Custom Elements are a web platform feature that lets developers define their own reusable HTML elements with custom behavior, lifecycle callbacks, and encapsulated functionality.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Custom Elements canonical | 2 |
| Custom Elements API | 1 |
| Custom Elements specification | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10329190 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Custom Elements Context triple: [Open Web Platform, hasComponent, Custom Elements]
-
A.
ConcreteElement
ConcreteElement is a specific implementation of an element in the Visitor design pattern that accepts visitor objects to perform operations without changing its class.
-
B.
Chrome Web Platform features
Chrome Web Platform features are the set of modern web capabilities and APIs integrated into the Chrome browser to enable powerful, performant, and secure web applications.
-
C.
Svelte
Svelte is a modern JavaScript framework and compiler for building user interfaces that shifts much of the work to a build step, producing highly efficient, minimal runtime code.
-
D.
Dash HTML Components
Dash HTML Components is a Python library that provides a set of declarative, Pythonic wrappers for standard HTML elements used to build web application interfaces in the Dash framework.
-
E.
CSS Custom Properties for Cascading Variables Module Level 1
CSS Custom Properties for Cascading Variables Module Level 1 is a W3C CSS specification that standardizes the use of custom properties (often called CSS variables) to enable reusable, dynamically cascading values in stylesheets.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Custom Elements Target entity description: Custom Elements are a web platform feature that lets developers define their own reusable HTML elements with custom behavior, lifecycle callbacks, and encapsulated functionality.
-
A.
ConcreteElement
ConcreteElement is a specific implementation of an element in the Visitor design pattern that accepts visitor objects to perform operations without changing its class.
-
B.
Chrome Web Platform features
Chrome Web Platform features are the set of modern web capabilities and APIs integrated into the Chrome browser to enable powerful, performant, and secure web applications.
-
C.
Svelte
Svelte is a modern JavaScript framework and compiler for building user interfaces that shifts much of the work to a build step, producing highly efficient, minimal runtime code.
-
D.
Dash HTML Components
Dash HTML Components is a Python library that provides a set of declarative, Pythonic wrappers for standard HTML elements used to build web application interfaces in the Dash framework.
-
E.
CSS Custom Properties for Cascading Variables Module Level 1
CSS Custom Properties for Cascading Variables Module Level 1 is a W3C CSS specification that standardizes the use of custom properties (often called CSS variables) to enable reusable, dynamically cascading values in stylesheets.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Web Components technology
ⓘ
Web platform feature ⓘ |
| compatibleWith |
CSS
ⓘ
HTML ⓘ JavaScript ⓘ |
| definedBy | class-based JavaScript syntax ⓘ |
| documentedAt |
MDN Web Docs
ⓘ
WHATWG HTML Living Standard ⓘ
linked to:
HTML Living Standard
|
| enables |
Custom behavior for HTML elements
ⓘ
Definition of custom HTML elements ⓘ Encapsulated functionality in the DOM ⓘ Reusable UI components ⓘ |
| goal |
Encapsulation of behavior and structure
ⓘ
Interoperability across frameworks ⓘ Reusability of UI components ⓘ |
| hasLifecycleCallback |
adoptedCallback
ⓘ
attributeChangedCallback ⓘ connectedCallback ⓘ disconnectedCallback ⓘ |
| implementedIn |
Google Chrome
ⓘ
Microsoft Edge ⓘ Mozilla Firefox ⓘ Safari ⓘ |
| introducedAround | 2013 ⓘ |
| partOf | Web Components ⓘ |
| relatedTo |
ES Modules
ⓘ
HTML Templates ⓘ Shadow DOM ⓘ
linked to:
Web Components
|
| requires |
Element name with a hyphen
ⓘ
Extending HTMLElement or a subclass ⓘ |
| standardizedBy |
W3C
ⓘ
linked to:
World Wide Web Consortium
|
| standardizedIn |
Custom Elements specification
ⓘ
linked to:
Custom Elements
|
| supports |
Attribute reflection
ⓘ
Autonomous custom elements ⓘ Custom element registration ⓘ Customized built-in elements ⓘ Extending built-in HTML elements ⓘ Lifecycle callbacks ⓘ Observed attributes list ⓘ Programmatic element upgrade ⓘ Shadow DOM integration ⓘ |
| usedFor |
Creating design systems
ⓘ
Framework-agnostic components ⓘ Reusable UI libraries ⓘ |
| usesAPI |
customElements.define()
ⓘ
customElements.get() ⓘ customElements.upgrade() ⓘ customElements.whenDefined() ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Custom Elements Description of subject: Custom Elements are a web platform feature that lets developers define their own reusable HTML elements with custom behavior, lifecycle callbacks, and encapsulated functionality.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Custom Elements
linked to: Custom Elements