Dynamic loading of markers in the visible area of ​​the map when it is moved in Openlayers?

Question

OpenLayers

I use Openlayers to work with OSM maps. The marker data is stored in the database. How to implement data loading (AJAX) based on the visible area of ​​the map. Those. how to specifically define this visible area itself and how to work with it to form a query to the database?

Answer 1

There is such a concept of Bounds - coverage area, so dig in the direction of this property on the map.