How to check if my OpenLayers Map has finished to render?

How do I use OpenLayers maps in react?

Using OpenLayers with React Functional Components

1. Using OpenLayers with React Functional Components.
2. Code Posted to GitHub.
3. Creating a Functional Component Wrapper.
4. Initializing the Map.
5. Adding Features to the Map.
6. Using State inside Event Handlers.
7. Conclusion.

What is projection in OpenLayers?

What projection is OpenLayers using? Every map that you’ll create with OpenLayers will have a view, and every view will have a projection. As the earth is three-dimensional and round but the 2D view of a map isn’t, we need a mathematical expression to represent it. Enter projections.

How do I add a marker in OpenLayers?

How to create a simple map (with a marker) using OpenLayers ?

1. Put a element where you want your map to be.
2. Now you can add a