How to use a different tile provider in openlayer3
问题 I am looking for detailed steps to implement this tile provider https://leaflet-extras.github.io/leaflet-providers/preview/ or http://mapstyle.petschge.de/ I am newbie where i am not knowing how to go about in implementing to the existing code which is shown below <!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title>Simple map</title> <link rel="stylesheet" href="http://openlayers.org/en/v3.0.0/css/ol.css" type="text/css"> <style> </style> </head> <body> <!--html element