Building mobile indoor navigation JS application without relying on GPS or any other kind of sensors

I would like to build a SIMPLE mobile(Android+IOS) indoor navigation app,which would be used for navigation in complex buildings.The app would not use GPS or rely on any kind of sensors(mobile or external). Every level of the building would be presented with 2D map(bird view). The user would enter his starting location(point A) and the destination(point B). The app would calculate the shortest path from A to B and present it by drawing the line in the 2D map.I would like to use HTML,CSS and...

Building mobile indoor navigation JS application without relying on GPS or any other kind of sensors

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