tiennm99 f97e36cbf7 fix(site): follow the cursor vertically in the chart hover ...

The emphasis and the bolded row came from Chart.js index-mode
interaction, which only recomputes when the x index changes. Moving
straight up and down inside one date therefore kept whichever series was
picked on entry, so the highlight did not match the line under the
cursor.

Track the pointer on the canvas instead and derive both the date and the
nearest series from pixel distance, so vertical movement re-picks. The
built-in tooltip and interaction config are gone; a small plugin draws
the vertical guide at the hovered date and a dot where the emphasized
series crosses it, replacing the caret and hover point that came with
them. Reads are throttled to one per animation frame, and the card now
follows the cursor's height instead of the average of forty series.

2026-09-11 16:24:47 +07:00

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index.html

fix(site): follow the cursor vertically in the chart hover

2026-09-11 16:24:47 +07:00