# Welcome to the Highcharts Gantt JS (gantt) Options Reference

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

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# data.complete

The callback that is evaluated when the data is finished loading, optionally from an external source, and parsed. The first argument passed is a finished chart options object, containing the series. These options can be extended with additional options and passed directly to the chart constructor.