# Welcome to the Highcharts Gantt JS (gantt) 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.

# rangeSelector.selected

The index of the button to appear pre-selected. If the selected range exceeds the total data range and the 'all' option is available, the 'all' option, showing the full range, is automatically selected.