Reverse geocoding with big array is fastest way? - javascript and performance

Question

I have many points on Google Maps and I want to show for each point the nearest city (so a reverse geocoding). I have a multidimensional array like this:

Answer 1

You may want to sort after the second array element:

 citta_vicine.sort(function(a, b) {
   return a[1] - b[1];
 });