JS Pivot table component supports JSON data sources. It is convenient for displaying data which is already on your page or inside your application. Just add JSON directly into your code and build a report based on it.
The user can load JSON data from the local file by choosing Connect > To local JSON in the toolbar. A system dialog will be opened offering to pick the file and then it will be loaded to the Web pivot table.
Configure how data looks like using the first object in JSON array. Define hierarchies, data types and group some fields. Read more in our documentation: Data types in JSON.