Change Google Maps marker icon when clicking on another
I created a page with multiple locations in Google Maps using the "Custom Fields Extra Fields" field.
I was able to change the marker icon on click, but I want it to change when other icons are clicked.
here is some sample code:
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map,
icon: iconBase + 'Stock%20Index%20Up.png'
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0], locations[i][6]);
infowindow.open(map, marker);
marker.setIcon("https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Down.png");
}
})(marker, i));
Improved the look of the working code: http://jsfiddle.net/gargiguy/s8vgxp3g
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2 answers
What duncan said: What you want to do is add all the markers to the array. In your click event handler, iterate over this array, updating each marker icon. Then finally set the icon to only the marker that was clicked.
google.maps.event.addListener(marker, 'click', (function (marker, i) {
return function () {
infowindow.setContent(locations[i][0], locations[i][6]);
infowindow.open(map, marker);
for (var j = 0; j < markers.length; j++) {
markers[j].setIcon("https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Up.png");
}
marker.setIcon("https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Down.png");
};
snippet of working code:
var markers = [];
var map;
function initialize() {
map = new google.maps.Map(document.getElementById('map'), {
zoom: 12,
// center: new google.maps.LatLng(-33.92, 151.25),
center: new google.maps.LatLng(36.8857, -76.2599),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var infowindow = new google.maps.InfoWindow();
var iconBase = 'https://cdn3.iconfinder.com/data/icons/musthave/24/';
var marker, i;
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map,
icon: iconBase + 'Stock%20Index%20Up.png'
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0], locations[i][6]);
infowindow.open(map, marker);
for (var j = 0; j < markers.length; j++) {
markers[j].setIcon("https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Up.png");
}
marker.setIcon("https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Down.png");
};
})(marker, i));
markers.push(marker);
}
}
google.maps.event.addDomListener(window, 'load', initialize);
var locations = [
[
"New Mermaid",
36.9079, -76.199,
1,
"Georgia Mason",
"",
"Norfolk Botanical Gardens, 6700 Azalea Garden Rd.",
"coming soon"
],
[
"1950 Fish Dish",
36.87224, -76.29518,
2,
"Terry Cox-Joseph",
"Rowena's",
"758 W. 22nd Street in front of Rowena's",
"found"
],
[
"A Rising Community",
36.95298, -76.25158,
3,
"Steven F. Morris",
"Judy Boone Realty",
"Norfolk City Library - Pretlow Branch, 9640 Granby St.",
"found"
],
[
"A School Of Fish",
36.88909, -76.26055,
4,
"Steven F. Morris",
"Sandfiddler Pawn Shop",
"5429 Tidewater Dr.",
"found"
],
[
"Aubrica the Mermaid (nee: Aubry Alexis)",
36.8618, -76.203,
5,
"Myke Irving/ Georgia Mason",
"USAVE Auto Rental",
"Virginia Auto Rental on Virginia Beach Blvd",
"found"
]
];
<script src="http://maps.google.com/maps/api/js"></script>
<div>
<div id="map" style="width: 500px; height: 400px;"></div>
</div>
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Since it seems like you only need to change the previous icon to the original, I would not recommend scrolling through every marker. On a map with a lot of markers, this can get pretty heavy.
Instead, I would store the active marker in a variable in the click event and just update it when it changes.
var marker;
var activeMarker;
var iconDefault = iconBase + 'Stock%20Index%20Up.png';
var iconSelected = 'https://cdn3.iconfinder.com/data/icons/musthave/24/Stock%20Index%20Down.png';
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map,
icon: iconDefault
});
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0], locations[i][6]);
infowindow.open(map, marker);
// check to see if activeMarker is set
// if so, set the icon back to the default
activeMarker && activeMarker.setIcon(iconDefault);
// set the icon for the clicked marker
marker.setIcon(iconSelected);
// update the value of activeMarker
activeMarker = marker;
}
})(marker, i));
}
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