Google Maps API v3: How to remove all markers?

Question

In Google Maps API v2, if I wanted to remove all the map markers, I could simply do:

map.clearOverlays();

How do I do this in Google Maps A

Answer 1

I dont' know why, but, setting setMap(null) to my markers didn't work for me when I'm using DirectionsRenderer.

In my case I had to call setMap(null) to my DirectionsRenderer as well.

Something like that:

var directionsService = new google.maps.DirectionsService();
var directionsDisplay = new google.maps.DirectionsRenderer();

if (map.directionsDisplay) {
    map.directionsDisplay.setMap(null);
}

map.directionsDisplay = directionsDisplay;

var request = {
    origin: start,
    destination: end,
    travelMode: google.maps.TravelMode.DRIVING
};

directionsDisplay.setMap(map);
directionsService.route(request, function (result, status) {
    if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(result);
    }
});