c2n/web-componentsv1.0.18
OverviewGetting startedComponentsIconsGuidesExamples
OverviewGetting startedComponentsIconsGuidesExamples
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Carousel

A swipeable slideshow with previous/next controls, indicators, looping and optional autoplay.

Attributes

NameTypeDefaultDescription
indexnumber0Zero-based index of the slide at the start of the viewport. Reflected, and clamped to the reachable range.
loopbooleanfalseWrap previous/next around the ends instead of stopping there.
autoplaybooleanfalseAdvance to the next slide every interval milliseconds and show a play/pause control.
mouse-dragbooleantrueLet a mouse drag the track from slide to slide. Touch and trackpads scroll it natively either way; "false" turns it off.
intervalnumber5000Milliseconds each slide stays on show while autoplay rotates.
labelstring—Accessible name of the carousel region. Defaults to "Carousel" in the nearest lang.
previous-labelstring—Accessible name of the previous-slide control. Defaults to "Previous slide" in the nearest lang.
next-labelstring—Accessible name of the next-slide control. Defaults to "Next slide" in the nearest lang.
indicators-labelstring—Accessible name of the indicator group. Defaults to "Choose slide" in the nearest lang.
indicator-label-templatestring—Accessible name of an indicator. Placeholders: {index} (1-based), {count}. Defaults to "Go to slide {index}" in the nearest lang.
slide-label-templatestring—Accessible name given to a slide without its own aria-label. Placeholders: {index} (1-based), {count}. Defaults to "{index} of {count}" in the nearest lang.
play-labelstring—Accessible name of the control that starts rotation. Defaults to "Start slide rotation" in the nearest lang.
pause-labelstring—Accessible name of the control that stops rotation. Defaults to "Stop slide rotation" in the nearest lang.

Slots

NameDescription
(default)The slides. Every child element is one slide.
previous-iconIcon of the previous-slide control. Defaults to a chevron.
next-iconIcon of the next-slide control. Defaults to a chevron.
play-iconIcon of the play control shown with autoplay while rotation is stopped.
pause-iconIcon of the pause control shown with autoplay while slides rotate.

Events

NameTypeDescription
slide-changeCustomEvent<SlideChangeEventDetail>Fired after the slide at the start of the viewport changes by a control, an indicator, the keyboard, a swipe, a drag, a click on a peeking slide, autoplay or a next()/previous()/goTo() call. Setting index does not fire it. Does not bubble.

CSS parts

Shadow DOM styling hooks used with ::part(name). Prefer CSS custom properties when they cover the change.

NameDescription
carouselThe region that wraps the whole carousel.
trackThe scrolling row of slides.
controlThe previous and next buttons.
previousThe previous-slide button.
nextThe next-slide button.
indicatorsThe row of indicators, with the play/pause control when autoplay is set.
indicatorOne indicator button.
rotationThe play/pause button shown with autoplay.

CSS custom properties

Grouped by semantic target and state from --c2-<component>__<target>__<state>--<property>. Click a group to collapse it; click a name to copy it.

NameTypeDefaultDescription
c2-carousel
--c2-carousel--gappixel16pxSpace between slides.
c2-carousel > slide
--c2-carousel__slide--widthlength100%Width of one slide; 50% shows two at once, 85% lets the next one peek in.
c2-carousel > track
--c2-carousel__track--border-radiusborder-radius8pxRounding of the viewport the slides scroll through.
c2-carousel > track > focus
--c2-carousel__track__focus--outlineoutline2px solid rgba(2, 101, 220, 0.4)
--c2-carousel__track__focus--outline-offsetpixel2px
c2-carousel > control
--c2-carousel__control--displaydisplayinline-flexnone hides the previous/next buttons.
--c2-carousel__control--opacityopacity1Opacity of the previous/next buttons while the pointer is off the carousel and focus is outside it; 0 shows them only on hover. Ignored on devices that cannot hover.
--c2-carousel__control--transition-durationtime240msHow long the previous/next buttons take to fade and slide in and out.
--c2-carousel__control--sizepixel36px
--c2-carousel__control--insetpixel12pxDistance from a control to the edge of the track.
--c2-carousel__control--colorcolor#18181b
--c2-carousel__control--background-colorcolor#ffffff
--c2-carousel__control--borderborder1px solid #e4e4e7
--c2-carousel__control--border-radiusborder-radius999px
--c2-carousel__control--box-shadowbox-shadow0 8px 24px rgba(24, 24, 27, 0.08)
c2-carousel > control > opposite
--c2-carousel__control__opposite--opacityopacity1Opacity of a control the pointer is not near while it hovers the carousel: with 0 only the edge zone under the pointer shows its button (previous on the left, next on the right) and the middle shows neither. A focused control always shows.
c2-carousel > control > zone
--c2-carousel__control__zone--widthlength20%Width of the zone along each edge of the track that reveals that edge's control; a percentage is of the track width. Never narrower than the control and its inset.
c2-carousel > control > hidden
--c2-carousel__control__hidden--translatepixel8pxHow far towards its edge a hidden previous/next button sits; it slides in from there as it fades in. 0px only fades.
c2-carousel > control > hover
--c2-carousel__control__hover--background-colorcolor#f4f4f5
c2-carousel > control > focus
--c2-carousel__control__focus--outlineoutline2px solid rgba(2, 101, 220, 0.4)
--c2-carousel__control__focus--outline-offsetpixel2px
c2-carousel > control > disabled
--c2-carousel__control__disabled--opacityopacity0.38
c2-carousel > icon
--c2-carousel__icon--sizepixel16px
c2-carousel > rotation
--c2-carousel__rotation--colorcolor#71717aColour of the play/pause control in the indicator row.
c2-carousel > rotation > hover
--c2-carousel__rotation__hover--colorcolor#18181b
c2-carousel > indicators
--c2-carousel__indicators--displaydisplayflexnone hides the indicator row.
--c2-carousel__indicators--gappixel4pxSpace between indicators.
--c2-carousel__indicators--margin-toppixel8pxSpace between the track and the indicator row.
--c2-carousel__indicators--justify-contentjustify-contentcenterWhere the indicators sit in the row.
c2-carousel > indicator
--c2-carousel__indicator--widthpixel8px
--c2-carousel__indicator--heightpixel8px
--c2-carousel__indicator--border-radiusborder-radius999px
--c2-carousel__indicator--background-colorcolor#a1a1aa
--c2-carousel__indicator--transition-durationtime200ms
c2-carousel > indicator > hover
--c2-carousel__indicator__hover--background-colorcolor#71717a
c2-carousel > indicator > selected
--c2-carousel__indicator__selected--widthpixel24pxWidth of the indicator of the current slide.
--c2-carousel__indicator__selected--background-colorcolorrgb(2, 101, 220)
c2-carousel > indicator > focus
--c2-carousel__indicator__focus--outlineoutline2px solid rgba(2, 101, 220, 0.4)

Text and languages

The text the component shows, in English. It shows another language when the app adds one with addTranslations, under carousel, and the nearest lang asks for it; any message not translated stays in English. {0}, {1}… stand for the values a message carries. Languages guide.

KeyEnglishValues
labelCarousel—
carouselcarousel—
slideslide—
previousPrevious slide—
nextNext slide—
indicatorsChoose slide—
goToGo to slide {0}{0} index
{1} _count
slideLabel{0} of {1}{0} index
{1} count
playStart slide rotation—
pauseStop slide rotation—
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displayTreeHierarchical tree view with expansion, selection, checkboxes and lazy loading.Data displayTree SelectA dropdown for picking one or several rows from a hierarchy, with checkboxes, search and a form value.InputsTreemap chartA whole split into nested rectangles, each sized by its value: market maps, budgets and disk usage.ChartTruncateClamps text to a number of lines, with an optional Show more button.Data displayUploadDrag-and-drop file selection with validation, upload progress, retry, cancellation, and attachment results.InputsView OptionsThe Display popover of a collection: layout, grouping, ordering on several levels, Show switches and visible properties, reported as one plain value.InputsVirtual ListWindowed list with built-in search, sorting, selection and an async data source.Data displayVisually HiddenText for screen readers only: kept in the accessibility tree, drawn nowhere, optionally shown while it holds focus.LayoutWaterfall chartA running total bridged by the steps that move it, where one row is one step and totals mark where the bridge lands.ChartWeek PlannerWeekly schedule with time blocks: a typical week with optional odd and even weeks, or a dated week the user edits.PlanningWorking IndicatorA live "work in progress" line: animated mark, shimmering label, trailing dots and elapsed time.FeedbackFeather Icons287 open-source Feather icons, one web component each.IconsMat Icon2,234 Material Icons ligatures rendered through a single element.IconsPhosphor Icons1,512 flexible icons in six weights, one web component each.IconsSymbols157 themeable spot illustrations for empty states, status panels, onboarding and error pages.IconsTask icons191 duotone icons for to-do items: work, home, health, sport, learning, food, money, travel and more.IconsThemingTheme every c2n component from a handful of design tokens with @c2n/theme, or reach for any component variable directly.GuideLanguagesComponents show their text in English; add your app’s languages as one JSON object, picked by the nearest lang.GuideFrameworksUse the components from React, Vue, Angular, Svelte, Lit or plain HTML — typed events, generated template types, and the one piece of configuration each framework needs.GuideUsing c2n in an applicationThe workflow behind every c2n app: load the theme once, use c2-* tags directly, and turn every repeated pattern into a small variant or composed component.GuideAI toolsGive Claude Code, Codex, Google Antigravity or GitHub Copilot the c2n skill, live component APIs, examples and application conventions.GuideNo components match.
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