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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-layers-support-Subtype.html below:

Subtype | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import Subtype from "@arcgis/core/layers/support/Subtype.js";

CDN: const Subtype = await $arcgis.import("@arcgis/core/layers/support/Subtype.js");

Class: @arcgis/core/layers/support/Subtype

Since: ArcGIS Maps SDK for JavaScript 4.28

Subtypes categorize a subset of features in a layer that share the same attributes. These subset of features are categorized based off the attribute value of the layer.subtypeField. Subtypes can have default values and domains assigned to their respective fields. This class has no constructor.

See also

• Introduction to subtypes

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The subtype unique identifier number.

declaredClass

Inherited

Property declaredClass Stringreadonly

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

defaultValues Property defaultValues Object

Name-value pairs of fields and their default field values associated with the subtype.

Domains associated with the subtype. It is an object where the name of each property corresponds with the name of a field containing a domain. If a field's domain is an instance of InheritedDomain, the application will use the domain defined for the field from the layer. If the domain is an instance of CodedValueDomain or RangeDomain then the domain is defined specifically for the given feature type.

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addHandles

Inherited

Method addHandles(handleOrHandles, groupKey)

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Returns

Type Description * | null | undefined Returns a new instance of this class.

hasHandles

Inherited

Method hasHandles(groupKey){Boolean}

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type Description Boolean Returns true if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles

Inherited

Method removeHandles(groupKey)

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

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