# 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.treemap.interactByLeaf

This option decides if the user can interact with the parent nodes or just the leaf nodes. When this option is undefined, it will be true by default. However when allowTraversingTree is true, then it will be false by default.