openlayers/config/jsdoc/api/index.md

Map	View	Layers
A [map](module-ol_Map-Map.html) is made of [layers](module-ol_layer_Base-BaseLayer.html), a [view](module-ol_View-View.html) to visualize them, [interactions](module-ol_interaction_Interaction-Interaction.html) to modify map content and [controls](module-ol_control_Control-Control.html) with UI components. [Overview](module-ol_Map-Map.html) [Creation](module-ol_Map-Map.html#Map) [Events](module-ol_MapBrowserEvent-MapBrowserEvent.html)	The view manages the visual parameters of the map view, like resolution or rotation. [View](module-ol_View-View.html) with center, projection, resolution and rotation	Layers are lightweight containers that get their data from [sources](module-ol_source_Source-Source.html). [layer/Tile](module-ol_layer_Tile-TileLayer.html) [layer/Image](module-ol_layer_Image-ImageLayer.html) [layer/Vector](module-ol_layer_Vector-VectorLayer.html) [layer/VectorTile](module-ol_layer_VectorTile-VectorTileLayer.html)
Controls	Interactions	Sources and formats
[Map default controls](module-ol_control_util.html#.defaults) [All controls](module-ol_control_Control-Control.html)	[Map default interactions](module-ol_interaction.html#~defaults) Interactions for [vector features](module-ol_Feature-Feature.html) [interaction/Select](module-ol_interaction_Select-Select.html) [interaction/Draw](module-ol_interaction_Draw-Draw.html) [interaction/Modify](module-ol_interaction_Modify-Modify.html) [All interactions](module-ol_interaction_Interaction-Interaction.html)	[Tile sources](module-ol_source_Tile-TileSource.html) for [layer/Tile](module-ol_layer_Tile-TileLayer.html) [Image sources](module-ol_source_Image-ImageSource.html) for [layer/Image](module-ol_layer_Image-ImageLayer.html) [Vector sources](module-ol_source_Vector-VectorSource.html) for [layer/Vector](module-ol_layer_Vector-VectorLayer.html) [Vector tile sources](module-ol_source_VectorTile-VectorTile.html) for [layer/VectorTile](module-ol_layer_VectorTile-VectorTileLayer.html) [Formats](module-ol_format_Feature-FeatureFormat.html) for reading/writing vector data [format/WMSCapabilities](module-ol_format_WMSCapabilities-WMSCapabilities.html)
Projections	Observable objects	Other components
All coordinates and extents need to be provided in view projection (default: EPSG:3857). To transform, use [proj.transform()](module-ol_proj.html#.transform) and [proj.transformExtent()](module-ol_proj.html#.transformExtent). [ol/proj](module-ol_proj.html)	Changes to all [ol/Object](module-ol_Object-BaseObject.html)s can be observed by calling the [object.on('propertychange')](module-ol_Object-BaseObject.html#on) method. Listeners receive an [ol/Object~ObjectEvent](module-ol_Object-ObjectEvent.html) with information on the changed property and old value.	[ol/Geolocation](module-ol_Geolocation.html) [ol/Overlay](module-ol_Overlay-Overlay.html)

 

API change policy

The OpenLayers API consists of

• names and signatures of constructors
• names and signatures of instance methods and properties
• names and signatures of functions
• names of constants

Within a major release series, the API will not be changed. Any changes to the API will be accompanied by a new major release.

Note: The API change policy does not cover CSS class names that are used to style the OpenLayers UI. It also does not cover any typedefs and enums.