Is it possible to detect a zoom event in Highcharts? My use case is that I have some state external to the chart, and when the user zooms in on part of it I want to detect what the new time range on the x-axis is and update the corresponding external state.
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Have you tried going through the Highcharts API?
You may want to look @
xAxis.events.setExtremes
And/Or
chart.events.selection