Tooltip formatter - option to find focused series

[dileepyelleti]

Version

5.1.0

Reproduction link

https://jsfiddle.net/54uaqbeL/

Steps to reproduce

Mouse hover exactly on any line

What is expected?

Some option in params in formatter callback to know whether particular series is in focus or not. This is useful if we have to highlight selected line value in tooltip

What is actually happening?

There is no option to know whether a series is in focus or not

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[Ovilia]

You should use trigger: 'item' because trigger: 'axis' highlights all the series of that axis.

[dileepyelleti]

@Ovilia
Thank you for reply.
I suppose it is not supported yet. But along with this #11115 if you can support distinguishing which line is currently hovered while using trigger: 'axis' it would be helpful

[MrSquaare]

This would be useful to highlight focused serie's value in the tooltip