How to get user's geolocation?

Question

On many sites I saw printed out my current city where I am (eg \"Hello to Berlin.\"). How they do that? What everything is needed for that? I guess the main part is here jav

Answer 1

I've found getCurrentPosition() to often be inaccurate since it doesn't spend a lot of time waiting on the GPS to acquire a good accuracy. I wrote a small piece of JavaScript that mimics getCurrentPosition() but actually uses watch position and monitors the results coming back until they are better accuracy.

Here's how it looks:

navigator.geolocation.getAccurateCurrentPosition(onSuccess, onError, {desiredAccuracy:20, maxWait:15000});

Code is here - https://github.com/gwilson/getAccurateCurrentPosition