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# Type alias BeforeRenderHandler
BeforeRenderHandler: (
highchartsOptions) =>HighchartsOptions
A handler function that allows you to customize the underlying chart element before it is
rendered. Use the highchartsOptions object that is passed to the callback to change
options values (opens new window) and then return the modified options
object. The returned options are then used when rendering the chart.
This callback is not supported for Indicator Chart, Areamap Chart, and Scattermap Chart.
For an example of how the BeforeRenderHandler function can be used, see the
Compose SDK Charts Guide.
# See
https://api.highcharts.com/highcharts/ (opens new window)
# Parameters
| Parameter | Type |
|---|---|
highchartsOptions | HighchartsOptions |
# Returns
HighchartsOptions