Listen to state change
Europa
Semi-major-axis: 671034 km
Mass: 4800000 x 10^16 kg
Diameter: 3121.6 km
...
isNavigable: 1, // Navigate across data points; default 0
...
chart.parent.addEventListener('data-select', (e) => {
update_moon_data(e.index); // e contains index and value of current datapoint
});