Smplest OL map gives a blank screen

11:44 30 Nov 2025

I'm trying to create a "Hello World" OpenLayers map, with no unnecessary dependencies. The code is


  
  
  
  OpenLayers3 scratchpad

All paths exist, all GETs succeed, there are no webserver or browser console errors - and no map, just an empty screen. Do I have to have node.js?

javascript openlayers openlayers-3