Customize markers
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Customize the look and feel of markers added to the map. Customize the look
and feel of markers added to the map in two ways:
Style markers based on type: Specify a
MarkerOptions
object to style markers of the same type. The changes you specify are
then applied after each marker is created, overwriting any default options.
For examples, see
Change the styling of markers using MarkerOptions
in this
guide.
Style markers based on data: Specify a customization function to
style markers based on data. You can style based on data from journey
sharing, or from outside sources:
Data from trip sharing: Trip sharing passes marker data to the
customization function including the type of object the marker represents:
vehicle, origin, waypoint or destination. Marker styling then changes
based on the current state of the marker element. For example, the number
of waypoints remaining until the vehicle finishes the trip.
Outside sources: You can combine the trip sharing data with
data from sources outside Fleet Engine and style the marker based on that
information as well.
For examples, see
Change the styling of markers using customization functions
in this guide.
Add click handling to markers: For examples,
see Add click handling.
Marker customization options
Both options use the following customization parameters in the Google
Maps JavaScript API under
FleetEngineTripLocationProviderOptions
:
Change the styling of markers using MarkerOptions
The following example shows how to configure vehicle marker styling with
a MarkerOptions
object. Follow this pattern to customize the styling of any
marker using any of the marker customizations listed in
Marker customization options.
JavaScript
deliveryVehicleMarkerCustomization = {
cursor: 'grab'
};
TypeScript
deliveryVehicleMarkerCustomization = {
cursor: 'grab'
};
Change the styling of markers using customization functions
The following example shows how to configure vehicle marker styling using
customization functions. Follow this pattern to customize the styling of any
marker using any of the marker customization parameters listed in
Marker customization options.
JavaScript
vehicleMarkerCustomization =
(params) => {
var distance = params.trip.remainingWaypoints.length;
params.marker.setLabel(`${distance}`);
};
TypeScript
vehicleMarkerCustomization =
(params: TripMarkerCustomizationFunctionParams) => {
const distance = params.trip.remainingWaypoints.length;
params.marker.setLabel(`${distance}`);
};
Add click handling to markers
The following example shows how to add click handling to a vehicle marker.
Follow this pattern to add click handling to any marker using any of the marker
customization parameters listed in Marker customization options.
JavaScript
vehicleMarkerCustomization =
(params) => {
if (params.isNew) {
params.marker.addListener('click', () => {
// Perform desired action.
});
}
};
TypeScript
vehicleMarkerCustomization =
(params: TripMarkerCustomizationFunctionParams) => {
if (params.isNew) {
params.marker.addListener('click', () => {
// Perform desired action.
});
}
};
What's next
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-28 UTC.
[null,null,["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eCustomize the look and feel of markers on the map based on marker type or underlying data like trip progress.\u003c/p\u003e\n"],["\u003cp\u003eUse \u003ccode\u003eMarkerOptions\u003c/code\u003e objects to style markers by type, such as setting the cursor for delivery vehicle markers.\u003c/p\u003e\n"],["\u003cp\u003eUse customization functions to style markers dynamically based on trip data, like displaying remaining waypoints.\u003c/p\u003e\n"],["\u003cp\u003eImplement custom click handling for markers to trigger specific actions when a user interacts with them.\u003c/p\u003e\n"],["\u003cp\u003eLeverage \u003ccode\u003eFleetEngineTripLocationProviderOptions\u003c/code\u003e to access marker customization parameters like \u003ccode\u003evehicleMarkerCustomization\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["Select platform: [Android](/maps/documentation/mobility/journey-sharing/on-demand/android/customize-markers \"View this page for the Android platform docs.\") [iOS](/maps/documentation/mobility/journey-sharing/on-demand/ios/customize-markers \"View this page for the iOS platform docs.\") [JavaScript](/maps/documentation/mobility/journey-sharing/on-demand/javascript/customize-markers \"View this page for the JavaScript platform docs.\")\n\n\u003cbr /\u003e\n\nCustomize the look and feel of markers added to the map. Customize the look\nand feel of markers added to the map in two ways:\n\n1. **Style markers based on type** : Specify a\n [`MarkerOptions`](/maps/documentation/javascript/reference/marker#MarkerOptions)\n object to style markers of the same type. The changes you specify are\n then applied after each marker is created, overwriting any default options.\n For examples, see\n [Change the styling of markers using `MarkerOptions`](#markeropt) in this\n guide.\n\n2. **Style markers based on data**: Specify a customization function to\n style markers based on data. You can style based on data from journey\n sharing, or from outside sources:\n\n - **Data from trip sharing**: Trip sharing passes marker data to the\n customization function including the type of object the marker represents:\n vehicle, origin, waypoint or destination. Marker styling then changes\n based on the current state of the marker element. For example, the number\n of waypoints remaining until the vehicle finishes the trip.\n\n - **Outside sources**: You can combine the trip sharing data with\n data from sources outside Fleet Engine and style the marker based on that\n information as well.\n\n For examples, see\n [Change the styling of markers using customization functions](#vehicle-markers)\n in this guide.\n3. **Add click handling to markers** : For examples,\n see [Add click handling](#add-click).\n\nMarker customization options\n\nBoth options use the following customization parameters in the Google\nMaps JavaScript API under\n[`FleetEngineTripLocationProviderOptions`](/maps/documentation/javascript/reference/journey-sharing-trip-and-order-progress#FleetEngineTripLocationProviderOptions):\n\n- [`vehicleMarkerCustomization`](/maps/documentation/javascript/reference/journey-sharing-trip-and-order-progress#FleetEngineTripLocationProviderOptions.vehicleMarkerCustomization)\n- [`originMarkerCustomization`](/maps/documentation/javascript/reference/journey-sharing-trip-and-order-progress#FleetEngineTripLocationProviderOptions.originMarkerCustomization)\n- [`waypointMarkerCustomization`](/maps/documentation/javascript/reference/journey-sharing-trip-and-order-progress#FleetEngineTripLocationProviderOptions.waypointMarkerCustomization)\n- [`destinationMarkerCustomization`](/maps/documentation/javascript/reference/journey-sharing-trip-and-order-progress#FleetEngineTripLocationProviderOptions.destinationMarkerCustomization)\n\nChange the styling of markers using `MarkerOptions`\n\nThe following example shows how to configure vehicle marker styling with\na `MarkerOptions` object. Follow this pattern to customize the styling of any\nmarker using any of the marker customizations listed in\n[Marker customization options](#cust-options). \n\nJavaScript \n\n deliveryVehicleMarkerCustomization = {\n cursor: 'grab'\n };\n\nTypeScript \n\n deliveryVehicleMarkerCustomization = {\n cursor: 'grab'\n };\n\nChange the styling of markers using customization functions\n\nThe following example shows how to configure vehicle marker styling using\ncustomization functions. Follow this pattern to customize the styling of any\nmarker using any of the marker customization parameters listed in\n[Marker customization options](#cust-options). \n\nJavaScript \n\n vehicleMarkerCustomization =\n (params) =\u003e {\n var distance = params.trip.remainingWaypoints.length;\n params.marker.setLabel(`${distance}`);\n };\n\nTypeScript \n\n vehicleMarkerCustomization =\n (params: TripMarkerCustomizationFunctionParams) =\u003e {\n const distance = params.trip.remainingWaypoints.length;\n params.marker.setLabel(`${distance}`);\n };\n\nAdd click handling to markers\n\nThe following example shows how to add click handling to a vehicle marker.\nFollow this pattern to add click handling to any marker using any of the marker\ncustomization parameters listed in [Marker customization options](#cust-options). \n\nJavaScript \n\n vehicleMarkerCustomization =\n (params) =\u003e {\n if (params.isNew) {\n params.marker.addListener('click', () =\u003e {\n // Perform desired action.\n });\n }\n };\n\nTypeScript \n\n vehicleMarkerCustomization =\n (params: TripMarkerCustomizationFunctionParams) =\u003e {\n if (params.isNew) {\n params.marker.addListener('click', () =\u003e {\n // Perform desired action.\n });\n }\n };\n\nWhat's next\n\n- [Customize route polylines](/maps/documentation/mobility/journey-sharing/on-demand/javascript/customize-route-polylines)"]]