Reset markers icon in google maps v3 Javascript - google-maps-api-3

Question

I am changing the icon for the current selected marker with something like this:
var icon_active = {
url: '/2018/images/map/location.png',
size: new google.maps.Size(32, 32),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(16, 42)
};
markers[window.VARS.marker_currently_open].setIcon(icon_active);
The problem I'm having, is how to reset it back to what it was before? I've tried to find a list of the standard icons, ie:
Could anyone advise me on how to do this? What I was trying to find was a list of the different (default) icons that are available, and find the standard one?

Answer 1

To set the default icon, call marker.setIcon(null).
i.e.:
markers[window.VARS.marker_currently_open].setIcon(null);
proof of concept fiddle
code snippet:
var markers = [];
function initialize() {
var map = new google.maps.Map(
document.getElementById("map_canvas"), {
center: new google.maps.LatLng(37.4419, -122.1419),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var marker = new google.maps.Marker({
position: map.getCenter(),
map: map
})
markers.push(marker);
window.VARS = {
marker_currently_open: 0
}
var icon_active = {
url: 'http://maps.google.com/mapfiles/ms/micons/blue.png',
size: new google.maps.Size(32, 32),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(16, 42)
};
markers[window.VARS.marker_currently_open].setIcon(icon_active);
setTimeout(function() {
markers[window.VARS.marker_currently_open].setIcon(null);
}, 5000);
}
google.maps.event.addDomListener(window, "load", initialize);
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="map_canvas"></div>