# JS API Reference

# Welcome to the Highcharts JS Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# drilldown.animation

Set the animation for all drilldown animations. Animation of a drilldown occurs when drilling between a column point and a column series, or a pie slice and a full pie series. Drilldown can still be used between series and points of different types, but animation will not occur.

The animation can either be set as a boolean or a configuration object. If `true`, it will use the 'swing' jQuery easing and a duration of 500 ms. If used as a configuration object, the following properties are supported:

- `duration`: The duration of the animation in milliseconds.

- `easing`: A string reference to an easing function set on the `Math` object. See the easing demo.