# 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.errorbar.point.events.dragStart

Callback that fires when starting to drag a point. The mouse event object is passed in as an argument. If a drag handle is used, `e.updateProp` is set to the data property being dragged. The `this` context is the point. See drag and drop options.