klausb opened a new issue #16629:
URL: https://github.com/apache/echarts/issues/16629
### What problem does this feature solve?
Trying to get a mouse hover event on a line chart using
chart.on('mouseover', {dataType: 'edge'}, params => { ... });
but did not work.
Taking away the dataType option gives events only when hovering over the
data points (small circles).
On the other hand emphasis reacts on hovering over the lines.
Actually I need an event, if emphasis kicks in.
### What does the proposed API look like?
Accept 'line' or 'edge' in line charts for mouseover event handler
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