# 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.

# chart.events.addSeries

Fires when a series is added to the chart after load time, using the `addSeries` method. One parameter, `event`, is passed to the function, containing common event information. Through `event.options` you can access the series options that were passed to the `addSeries` method. Returning false prevents the series from being added.