Directions

The Directions Widget provides a way to build driving and walking directions using ArcGIS Online and custom Network Analysis Route services. Similar to how the route works, this widget generates a route finding a least-cost path between multiple points using a specified network. When searching for an address, the location of the points used to navigate depends on the locationType of the Search properties. The default value will be "street" for any locator source that does not define a locationType. The resulting directions are displayed with detailed turn-by-turn instructions. The widget wraps pre-built search functionality directly within it so all you need to do is reference the widget within your application.

The routing service defaults to this URL: https://route-api.arcgis.com/arcgis/rest/services/World/Route/NAServer/Route_World. This routing service requires authentication. You can use Directions.apiKey, or a global apiKey. Alternatively, you can log in once prompted, or use another authentication method to access the routing service. To geocode locations in the Directions widget UI, the built-in Search widget uses this URL by default: https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer, which also requires authentication. Lastly, you can also specify your own ArcGIS Server route and geocoding services. Please see the routeServiceUrl property for routing, and the Search properties for geocoding.

The Clear route button calls the reset() method, which clears all the input stops and results in the widget and in the map. Any types of customizations made to the underlying functionality of the widget should be handled via its viewModel property.

See also:

Example:

const directionsWidget = new Directions({
  view: view
});
// Adds the Directions widget below other elements in
// the top right corner of the view
view.ui.add(directionsWidget, {
  position: "top-right",
  index: 2
});

Constructors

new Directions(properties)

Parameter:

properties Object

optional

See the properties for a list of all the properties that may be passed into the constructor.

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.

Show inherited properties

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Type	Summary	Class
String	more details An authorization string used to access a resource or service.	more details	Directions
String\|HTMLElement	more details The ID or node representing the DOM element containing the widget.	more details	Widget
String	more details The name of the class.	more details	Accessor
GoToOverride	more details This function provides the ability to override either the MapView goTo() or SceneView goTo() methods.	more details	Directions
Number	more details Indicates the heading level to use for the origin and destination addresses (i.e.	more details	Directions
String	more details The widget's default CSS icon class.	more details	Directions
String	more details The unique ID assigned to the widget when the widget is created.	more details	Widget
String	more details The widget's default label.	more details	Directions
RouteLayerSolveResult	more details The most recent route result.	more details	Directions
Number	more details The maximum number of stops allowed for routing.	more details	Directions
String	more details The URL of the REST endpoint of the Route service.	more details	Directions
SimpleLineSymbol	more details Defines the symbol used to draw the route on the map.	more details	Directions
SearchProperties	more details Controls the default properties used when searching.	more details	Directions
Object	more details The default stop symbols used to display locations between the origin and final destination.	more details	Directions
MapView\|SceneView	more details The view from which the widget will operate.	more details	Directions
DirectionsViewModel	more details The view model for this widget.	more details	Directions
Boolean	more details Indicates whether the widget is visible.	more details	Widget

Property Details

apiKey String Since: ArcGIS API for JavaScript 4.19

An authorization string used to access a resource or service. API keys are generated and managed in the ArcGIS Developer dashboard. An API key is tied explicitly to an ArcGIS account; it is also used to monitor service usage. Setting a fine-grained API key on a specific class overrides the global API key.

By default, the following URLs will be used (unless overwritten in the app, or if using different defaults from a portal):

Geocoding URL: https://geocode-api.arcgis.com/arcgis/rest/services/World/GeocodeServer

Routing URL: https://route-api.arcgis.com/arcgis/rest/services/World/Route/NAServer/Route_World

Example:

const directionsWidget = new Directions({
  view: view,
  apiKey: "YOUR_API_KEY"
});
// Add the Directions widget to the top right corner of the view
view.ui.add(directionsWidget, {
  position: "top-right"
});

container String|HTMLElement inherited

The ID or node representing the DOM element containing the widget. This property can only be set once. The following examples are all valid use cases when working with widgets.

Examples:

// Create the HTML div element programmatically at runtime and set to the widget's container
const basemapGallery = new BasemapGallery({
  view: view,
  container: document.createElement("div")
});

// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
  position: "top-right"
});

// Specify an already-defined HTML div element in the widget's container

const basemapGallery = new BasemapGallery({
  view: view,
  container: basemapGalleryDiv
});

// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
  position: "top-right"
});

// HTML markup
<body>
  <div id="viewDiv"></div>
  <div id="basemapGalleryDiv"></div>
</body>

// Specify the widget while adding to the view's UI
const basemapGallery = new BasemapGallery({
  view: view
});

// Add the widget to the top-right corner of the view
view.ui.add(basemapGallery, {
  position: "top-right"
});

declaredClass Stringreadonly inherited Since: ArcGIS API for JavaScript 4.7

The name of the class. The declared class name is formatted as esri.folder.className.

goToOverride GoToOverride Since: ArcGIS API for JavaScript 4.8

This function provides the ability to override either the MapView goTo() or SceneView goTo() methods.

See also:

Example:

// The following snippet uses the Search widget but can be applied to any
// widgets that support the goToOverride property.
search.goToOverride = function(view, goToParams) {
  goToParams.options.duration = updatedDuration;
  return view.goTo(goToParams.target, goToParams.options);
};

headingLevel Number Since: ArcGIS API for JavaScript 4.20

Indicates the heading level to use for the origin and destination addresses (i.e. "380 New York Street"). By default, this is rendered as a level 2 heading (e.g. <h2>380 New York Street</h2>). Depending on the widget's placement in your app, you may need to adjust this heading for proper semantics. This is important for meeting accessibility standards.

Default Value:2

See also:

Heading Elements

Example:

// address text will render as an <h3>
directions.headingLevel = 3;

iconClass String Since: ArcGIS API for JavaScript 4.7

The widget's default CSS icon class.

id String inherited

The unique ID assigned to the widget when the widget is created. If not set by the developer, it will default to the container ID, or if that is not present then it will be automatically generated.

label String Since: ArcGIS API for JavaScript 4.7

The widget's default label.

lastRoute RouteLayerSolveResultreadonly

The most recent route result. Returns a RouteLayerSolveResult object containing properties for barriers (if any), stops, and directions.

Properties:

directionLines Collection<DirectionLine>

Collection of direction polylines associated with line segments between turns.

directionPoints Collection<DirectionPoint>

Collection of direction items as points with various display information.

pointBarriers Collection<PointBarrier>

Collection of point barriers.

polygonBarriers Collection<PolygonBarrier>

Collection of polygon barriers.

polylineBarriers Collection<PolylineBarrier>

Collection of polyline barriers.

routeInfo RouteInfo

Information about a solved route including the route's geometry and overall distance and time.

stops Collection<Stop>

Collection of stops. Respresents the start, end, or midpoint of a route.

Default Value:null

See also:

RouteLayer.solve()

maxStops Number

The maximum number of stops allowed for routing.

Default Value:50

routeServiceUrl String

The URL of the REST endpoint of the Route service.

By default, the DirectionsViewModel will use the global routing serice (see config.routeServiceUrl).

If connected to a Portal you can use the route service advertised on the portal's helper services as demonstrated below.

See also:

Examples:

// Create Directions using the route service advertised on the portal
const portal = Portal.getDefault();
const directions = new Directions({
  routeServiceUrl: portal.helperServices.route.url,
  view: view
});

// Create Directions using a defined route service with an apiKey
const portal = Portal.getDefault();
const directions = new Directions({
  apiKey: "YOUR_API_KEY",
  routeServiceUrl: "https://route-api.arcgis.com/arcgis/rest/services/World/Route/NAServer/Route_World",
  view: view
});

routeSymbol SimpleLineSymbol

Defines the symbol used to draw the route on the map.

searchProperties SearchProperties

Controls the default properties used when searching. Note that the default searchProperties differ slightly from the Search widget.

Default Value:null

stopSymbols Object

The default stop symbols used to display locations between the origin and final destination.

Properties:

first Symbol

optional

The first stop symbol.

middle Symbol

optional

The middle stop symbol.

last Symbol

optional

The last stop symbol.

unlocated Symbol

optional

An unlocated stop symbol.

waypoint Symbol

optional

A waypoint stop symbol.

view MapView|SceneView

The view from which the widget will operate.

viewModel DirectionsViewModelautocast

The view model for this widget. This is a class that contains all the logic (properties and methods) that controls this widget's behavior. See the DirectionsViewModel class to access all properties and methods on the widget.

visible Boolean inherited

Indicates whether the widget is visible.

If false, the widget will no longer be rendered in the web document. This may affect the layout of other elements or widgets in the document. For example, if this widget is the first of three widgets associated to the upper right hand corner of the view UI, then the other widgets will reposition when this widget is made invisible. For more information, refer to the CSS display value of "none".

Default Value:true

Example:

// Hides the widget in the view
widget.visible = false;

Method Overview

Show inherited methods

Hide inherited methods

Return Type	Summary	Class
String	more details A utility method used for building the value for a widget's `class` property.	more details	Widget
	more details Destroys the widget instance.	more details	Widget
Boolean	more details Emits an event on the instance.	more details	Widget
Promise<RouteLayerSolveResult>	more details Computes a route and directions.	more details	Directions
Boolean	more details Indicates whether there is an event listener on the instance that matches the provided event name.	more details	Widget
Boolean	more details `isFulfilled()` may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected).	more details	Widget
Boolean	more details `isRejected()` may be used to verify if creating an instance of the class is rejected.	more details	Widget
Boolean	more details `isResolved()` may be used to verify if creating an instance of the class is resolved.	more details	Widget
Object	more details Registers an event handler on the instance.	more details	Widget
	more details Widget teardown helper.	more details	Widget
	more details This method is primarily used by developers when implementing custom widgets.	more details	Widget
Object	more details This method is primarily used by developers when implementing custom widgets.	more details	Widget
	more details Renders widget to the DOM immediately.	more details	Widget
	more details This method is primarily used by developers when implementing custom widgets.	more details	Widget
Promise	more details `when()` may be leveraged once an instance of the class is created.	more details	Widget
	more details Zoom so that the full route is displayed within the current map extent.	more details	Directions

Method Details

classes(classNames){String}inherited Since: ArcGIS API for JavaScript 4.7

A utility method used for building the value for a widget's class property. This aids in simplifying CSS class setup.

Parameter:

classNames String|String []|Object

repeatable

The class names.

Returns:

Type	Description
String	The computed class name.

See also:

Guide - Widget development (rendering)

Example:

// .tsx syntax showing how to set CSS classes while rendering the widget

render() {
  const dynamicIconClasses = {
    [CSS.myIcon]: this.showIcon,
    [CSS.greyIcon]: !this.showIcon
  };

  return (
    <div class={classes(CSS.root, CSS.mixin, dynamicIconClasses)} />
  );
}

destroy()inherited

Destroys the widget instance.

emit(type, event){Boolean}inherited

Emits an event on the instance. This method should only be used when creating subclasses of this class.

Parameters:

type String

The name of the event.

event Object

optional

The event payload.

Returns:

Type	Description
Boolean	`true` if a listener was notified

getDirections(){Promise<RouteLayerSolveResult>}

Computes a route and directions. If successfully computed, results will be assigned to lastRoute returned. If a view is assigned, it will zoom to the extent of the route.

Returns:

Type	Description
Promise<RouteLayerSolveResult>	When resolved, returns a RouteLayerSolveResult.

hasEventListener(type){Boolean}inherited

Indicates whether there is an event listener on the instance that matches the provided event name.

Parameter:

type String

The name of the event.

Returns:

Type	Description
Boolean	Returns true if the class supports the input event.

isFulfilled(){Boolean}inherited Since: ArcGIS API for JavaScript 4.19

isFulfilled() may be used to verify if creating an instance of the class is fulfilled (either resolved or rejected). If it is fulfilled, true will be returned.

Returns:

Type	Description
Boolean	Indicates whether creating an instance of the class has been fulfilled (either resolved or rejected).

isRejected(){Boolean}inherited Since: ArcGIS API for JavaScript 4.19

isRejected() may be used to verify if creating an instance of the class is rejected. If it is rejected, true will be returned.

Returns:

Type	Description
Boolean	Indicates whether creating an instance of the class has been rejected.

isResolved(){Boolean}inherited Since: ArcGIS API for JavaScript 4.19

isResolved() may be used to verify if creating an instance of the class is resolved. If it is resolved, true will be returned.

Returns:

Type	Description
Boolean	Indicates whether creating an instance of the class has been resolved.

on(type, listener){Object}inherited

Registers an event handler on the instance. Call this method to hook an event with a listener.

Parameters:

type String|String []

An event or an array of events to listen for.

listener Function

The function to call when the event fires.

Returns:

Type Description

Object

Returns an event handler with a remove() method that should be called to stop listening for the event(s).

Property	Type	Description
remove	Function	When called, removes the listener from the event.

Example:

view.on("click", function(event){
  // event is the event handle returned after the event fires.
  console.log(event.mapPoint);
});

own(handles)inherited

Widget teardown helper. Any handles added to it will be automatically removed when the widget is destroyed.

Parameter:

handles WatchHandle|WatchHandle []

Handles marked for removal once the widget is destroyed.

postInitialize()inherited

This method is primarily used by developers when implementing custom widgets. Executes after widget is ready for rendering.

render(){Object}inherited

This method is primarily used by developers when implementing custom widgets. It must be implemented by subclasses for rendering.

Returns:

Type	Description
Object	The rendered virtual node.

renderNow()inherited

Renders widget to the DOM immediately.

scheduleRender()inherited

This method is primarily used by developers when implementing custom widgets. Schedules widget rendering. This method is useful for changes affecting the UI.

when(callback, errback){Promise}inherited Since: ArcGIS API for JavaScript 4.19

when() may be leveraged once an instance of the class is created. This method takes two input parameters: a callback function and an errback function. The callback executes when the instance of the class loads. The errback executes if the instance of the class fails to load.

Parameters:

callback Function

optional

The function to call when the promise resolves.

errback Function

optional

The function to execute when the promise fails.

Returns:

Type	Description
Promise	Returns a new promise for the result of `callback` that may be used to chain additional functions.

Example:

// Although this example uses the BasemapGallery widget, any class instance that is a promise may use when() in the same way
let bmGallery = new BasemapGallery();
bmGallery.when(function(){
  // This function will execute once the promise is resolved
}, function(error){
  // This function will execute if the promise is rejected due to an error
});

zoomToRoute()

Zoom so that the full route is displayed within the current map extent.

Type Definitions

SearchProperties

Configurable Search properties of the widget.

Properties:

activeSourceIndex Number

optional

Number index indicating the current selected source.

allPlaceholder String

optional

String value used as a hint for input text when searching on multiple sources.

autoNavigate Boolean

optional

Default Value:true

Indicates whether to automatically navigate to the selected result once selected.

autoSelect Boolean

optional

Indicates whether to automatically select and zoom to the first geocoded result.

includeDefaultSources Boolean|Function

optional

Indicates whether or not to include defaultSources in the Search UI. This can be a boolean value or a function that returns an array of Search sources.

locationType String

optional

Define the type of location, either "street" or "rooftop". The default value will be "street" for any locator source that does not define a locationType.

maxResults Number

optional

Default Value:6

Indicates the maximum number of search results to return.

maxSuggestions Number

optional

Default Value:6

Indicates the maximum number of suggestions to return for the widget's input.

minSuggestCharacters Number

optional

Default Value:1

Indicates the minimum number of characters required before querying for a suggestion.

popupEnabled Boolean

optional

Default Value:false

Indicates whether to display a Popup when a selected result is clicked.

popupTemplate PopupTemplate

optional

A customized PopupTemplate for the selected feature.

resultGraphicEnabled Boolean

optional

Default Value:false

Indicates whether to show a graphic on the map for the selected source.

searchAllEnabled Boolean

optional

Indicates whether to display the option to search all sources.

searchTerm String

optional

The value of the search box input text string.

sources Collection<(LayerSearchSource|LocatorSearchSource)>

optional

Specifies the sources to search in the view.

suggestionsEnabled Boolean

optional

Default Value:true

Indicates whether to display suggestions as the user enters input text in the widget.

view MapView|SceneView

optional

The view of the widget.

viewModel SearchViewModel

optional

The Search widget's view model.

ArcGIS API for JavaScriptAPI Reference

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