Skip to content
Fieldbook
Menu
Sign in
EN

Charts

Spark line

Spark line: A row of metric tiles whose sparklines draw themselves on mount and follow the pointer with a crosshair that reads the value under it.

Using Spark line

Spark line uses the wide preview frame with a dark theme setting.

Customize the preview

These controls are passed to the demo. Defaults and limits describe the preview; consult the implementation for its full prop API.

ControlTypeDefaultPreview limits
colorcolor#38BDF8No additional limit in the metadata.
smoothbooleantrueNo additional limit in the metadata.
pointsnumber30From 12 to 60; step 1
Which frameworks are available for Spark line?

Spark line is available for React, Vue, Svelte, Astro, HTML. The live preview uses React; the source observations below apply to index.tsx. Check the selected port before relying on the same interactions.

What does Spark line depend on?

The React metadata lists these npm dependencies beyond React: motion, clsx, tailwind-merge.

What accessibility details are visible in Spark line?

The React source for Spark line includes: attributes and handlers (aria-hidden, aria-label, onKeyDown, tabIndex); explicit roles (img); key comparisons (ArrowLeft, ArrowRight, Escape). These are source observations. Verify accessible names, focus order and keyboard behavior in the composed page.

How does Spark line handle reduced motion?

Spark line reads the motion preference in its React source through useReducedMotion(). Preference-dependent expressions in index.tsx: delay: reduce ? 0 : delay; delay: reduce ? 0 : delay + 0.35; delay: reduce ? 0 : delay + 0.85. Check the full implementation, shared styles and selected port with reduced motion enabled; these observations do not establish that every animation stops.

Connect your agent

Related open components

Still of the Sessions Line Card component, a Fieldbook UI component in Charts.
1884Sessions Line CardChartsA seven day session card where the reading sits inside the plot, anchored bottom right, and a highlight dot rides the spline as you scrub.
Still of the Area chart lite component, a Fieldbook UI component in Charts.
1525Area chart liteChartsA responsive SVG area chart with round axis ticks, a gradient fill, a crosshair that reads the sample under the pointer, and a draw-on wipe.
Still of the Candle Price Chart component, a Fieldbook UI component in Charts.
2086Candle Price ChartChartsAn OHLC candlestick chart with up and down colored candles, a wick per period, and a hover tooltip showing open, high, low and close.
Still of the Donut share chart component, a Fieldbook UI component in Charts.
2336Donut share chartChartsA five slice donut with a hollow centre and hairline gaps that sweeps open on mount and lifts whichever slice the pointer is over.
Still of the Engraved label pie component, a Fieldbook UI component in Charts.
2348Engraved label pieChartsA solid pie chart that sets each category name inside its own slice in an inverted color, so the breakdown reads without any outside labels or leader lines.
Still of the Forecast tail line component, a Fieldbook UI component in Charts.
1859Forecast tail lineChartsA dashed continuation that carries a series past its last real point to a horizon, drawing itself out and landing on a hollow marker.