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Following function returns a google.maps.LatLngBounds object for an array of google.maps.Marker
/**
* Returns a bounds object for a given list of markers
* @param {array} markers The markers
* @return {LatLngBounds} The bounds object
*/
getBoundsForMarkers = function(markers) {
var bounds, marker, _i, _len;
bounds = new google.maps.LatLngBounds();
for (_i = 0, _len = markers.length; _i < _len; _i++) {
marker = markers[_i];
bounds.extend(marker.getPosition());
}
return bounds;
};Assuming we have an array with markers called myMarkers and a local map object, we can use the function to calculate the bounds and apply it to the map:
var bounds;
bounds = getBoundsForMarkers(myMarkers);
// Apply the bounds to map
map.fitBounds(bounds);