NegativeFeedbackLoop NegativeFeedbackLoop - 1 month ago 13
Javascript Question

Leaflet adding markers on map and data security

I'm looking into using Leaflet to make maps and place markers in an internal application (i.e. not a web-site, but a simple desktop application), but I'm wondering which data is sent and which is not. Do the following command send any data or is it only plotted locally?

marker = L.marker([51.5, -0.09]).addTo(mymap);


Needless to say, I want to keep my data confidential and not send it away over the web.
(If this is the case, then any recommendation on a good alternatives).

Answer

It's all local (I use leaflet offline all the time). If you want to check the source code for markers and look for yourself, feel free to check it out here

As an in-browser javascript library, I've never come across a situation where leaflet sent data. In fact, the only thing you really need an internet connection for in leaflet is to get map tiles/images.