distance

Here is a javascript function to calculate the distance between two latitude and longitude coordinates. function deg2rad(deg) { return deg * (Math.PI/180) } function calcDistance(lat1,lon1,lat2,lon2) {   var R = 6371; // Radius of the earth in km   var dLat = deg2rad(lat2-lat1);   var dLon = deg2rad(lon2-lon1);   var a =     Math.sin(dLat/2) *…