Highlight focused series in axis tooltip #11749
Description
What problem does this feature solve?
When someone hovers over a specific series, and the tooltip is shown, we need to highlight the specific series in the tooltip.
This happens when the tooltip trigger is axis.
Please see the screenshot provided for an example.
What does the proposed API look like?
When the
tooltip.formatter string, Function
is a callback function in the params Object|Array
have an property called
focused of type boolean
for each item which is true when the mouse is hovering over the item's specific series.