(Optional) Prelab #3

This week’s prelab are optional readings on (1) GeoJSON from the Leaflet documentation and (2) event listeners. Both may be helpful for those without a coding background:

• https://rowanhogan.github.io/Leaflet/examples/geojson.html
• https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Building_blocks/Events#what_is_an_event