The ol is the OpenLayers package that provides the API to play with the maps overlay.
ol.Maps
The core essential component of the ol package is ol.Maps. It is used to render the maps on the target div, which in our case is map-overlay a div tag from index.html where the map will be shown:
// Renders the map on the target div var map = new ol.Map({target: "map"})
ol.View
This is used to manage or configure the viewing properties of the map such as zoom level, default center position, and the projection of the map:
// To configure center, zoom level and projection of the map var view = new ol.View({ zoom: 9 });
ol.layer
A layer is a visual representation of data from a source. It is used to show the data on the map that ...
