These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Callback function to format the text of the tooltip from scratch.
false to disable tooltip for a specific point on series.
A subset of HTML is supported. Unless
useHTML is true, the HTML of
the tooltip is parsed and converted to SVG, therefore this isn't a
complete HTML renderer. The following tags are supported:
<span>. Spans can be styled
style attribute, but only text-related CSS that is shared
with SVG is handled.
Since version 2.1 the tooltip can be shared between multiple series
shared option. The available data in the formatter
differ a bit depending on whether the tooltip is shared or not. In
a shared tooltip, all properties except
x, which is common for
all points, are kept in an array,
Available data are: