# 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.

# plotOptions.item.center

The center of the pie chart relative to the plot area. Can be percentages or pixel values. The default behaviour (as of 3.0) is to center the pie so that all slices and data labels are within the plot area. As a consequence, the pie may actually jump around in a chart with dynamic values, as the data labels move. In that case, the center should be explicitly set, for example to `["50%", "50%"]`.