Declared in commonSeriesSettings, selectionStyle applies to all series in the chart. Declared in a series configuration object, selectionStyle applies to this particular series only. The series-specific selectionStyle overrides the common one.
Specifies the dash style of the series line when the series is in the selected state. Applies only to line-like series.
The following dash styles are available:
The border is a solid, continuous line.
The border is displayed using long dashes.
The border is displayed using dashes.
The border is displayed using dots.
Any combination of 'longDash', 'dash' and 'dot'
The border is displayed by repeating the specified combination. For instance, 'dashdotdash'.