Component

A Component is one component on your published page. It gives you a stable, supported surface for reading and driving that component, so you don't have to reach into the DOM.

You get one from a ComponentSet — via .only(), .first(), .nth(i), or iteration — or as event.target in an event handler.

const hero = experience.findByLocator('hero').only()

hero.componentType // 'cml-text'
hero.cmlLocator // 'hero'
hero.text.setText('Welcome')

Everything on a component falls into one of four groups: identity, attributes and data, capabilities, and events.

Identity

Read-only properties describing the component.

Property	Type	What it is
cmlLocator	string	The name you gave it in Flex, or '' if it has none.
componentType	string	Its type, e.g. 'cml-text'.
cmlId	string	Its internal id, or '' if unset.
capabilities	CapabilityName[]	Which capabilities it carries, e.g. ['text', 'states', 'visibility'].

if (hero.componentType === 'cml-video') hero.media.play()

has(capability)

has(capability: CapabilityName): boolean

Check for a capability before using it. CapabilityName is 'media' | 'text' | 'states' | 'visibility' | 'pages'.

if (hero.has('media')) hero.media.play()

Optional chaining does the same job more briefly:

hero.media?.play() // does nothing if hero isn't a video

Capabilities

What a component can do depends on its type. A capability namespace exists only when the component carries it; otherwise the property is undefined.

Namespace	On	Methods
media	cml-video	play(), pause()
text	cml-text	setText(text), getText()
states	Any visible element	activate(name), deactivate(name), toggle(name), list(), current()
visibility	Any visible element	show(), hide(), isHidden()
pages	The experience	list(), current(), goTo(slugOrIndex), next(), previous()

const video = experience.findByTag('cml-video').first()

video?.media.pause()
video?.visibility.hide()

See Capabilities for each one in full.

Attributes

getAttribute(name: string): string | undefined
setAttribute(name: string, value: string | null): void

Read and write HTML attributes on the component.

const link = experience.findByLocator('cta-link').only()

link.getAttribute('href') // 'https://…', or undefined if absent
link.setAttribute('data-seen', '1')
link.setAttribute('data-seen', null) // passing null removes it

On a set, setAttribute applies to every member and getAttribute reads the first — see how calls fan out.

Two attribute families are off-limits and throw if you try to write them: cml-id, which identifies the component and can't change, and anything starting with editor-, which exists only while authoring and never reaches a published page. Both are readable.

Author data

getData(key: string): string | undefined
setData(key: string, value: string | null): void

Key-value data attached to an element in Flex's SDK Data inspector. This is the clean way to pass values from the design to your code — a product SKU, a price, a video id — without hard-coding them in the script.

Data lives under a reserved data-sdk- prefix, so getData('color') reads data-sdk-color. That keeps it separate from Ceros' own attributes: you only ever read back what was put there deliberately.

const card = experience.findByLocator('card').only()

card.getData('sku') // 'ABC-123', or undefined if the key isn't set
card.setData('sku', 'XYZ-789')
card.setData('sku', null) // removes it

// a common pattern: read per-element config set by whoever built the design
experience.findByLocator('product').forEach((product) => {
  fetchPrice(product.getData('sku')).then((price) => {
    product.findByLocator('price').text.setText(price)
  })
})

Events

on(type: SdkEventType, handler: (event: ComponentEvent) => void): Unsubscribe

Subscribe to a runtime event on this component. Returns a function you call to stop listening. Events bubble, so a listener on a container also fires for everything inside it.

const off = hero.on('component.click', (event) => {
  console.log('clicked', event.target.cmlLocator)
})

off() // stop listening

Full detail — event types, payload, and patterns — in Events.

Searching inside a component

The same three lookups as your experience handle, scoped to this component's contents (the component itself is never a match):

findByLocator(locator: string): ComponentSet
findByTag(tag: string): ComponentSet
findById(id: string): ComponentSet

const pricing = experience.findByLocator('pricing').only()

pricing.findByTag('cml-text') // only the text inside the pricing section

See Finding components.

getElement()

getElement(): Element

The escape hatch to the underlying DOM element, for the rare thing the SDK doesn't cover — measuring layout, reading computed styles, attaching a listener for an event the SDK doesn't expose.

const rect = hero.getElement().getBoundingClientRect()

Prefer the capabilities, properties, and on(...) where they cover what you need: they're the supported surface, and they won't change under you. Writing directly to the element — setting textContent on a text component, for example — can corrupt what Ceros renders.

Runtime only

Everything a component lets you change — text, visibility, states, attributes, data — changes the live page and nothing else. It is never saved back to your experience, and a reload restores exactly what was published. See Limits.

wrap(element)

wrap(element: Element): Component

Wraps a DOM element as a Component. Lookups already do this for you, so you'll rarely need it — mainly useful in tests where you have an element in hand.