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October 10, 2025 at 4:29 pm #61520

Ananya

@jhansen,

You can use the mouseover event of the dataseries to detect which series is being hovered over, and use toolTip contentFormatter to style it accordingly.

Highlight hovered over dataseries is shared tooltip

Please take a look at this JSFiddle for a working example of the same.

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Team CanvasJS
Ananya Deka