Property Overview

Property Details

declaredClass Stringreadonly inherited

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

description String

The element's description providing the purpose behind it.

label String

A string value containing the field alias. This is not to Arcade expressions as the title is used instead.

type Stringreadonly

The type of form element displayed.

Possible Values:"field"|"group"

visibilityExpression String

A reference to an Arcade expression that returns a boolean value. When this expression evaluates to true, the element is displayed. When the expression evaluates to false the element is not displayed. If no expression is provided, the default behavior is that the element is displayed. Care must be taken when defining a visibility expression for a non-nullable field i.e. to make sure that such fields either have default values or are made visible to users so that they can provide a value before submitting the form.

The referenced expression must be what is defined in the form template's expressionInfos. It cannot be set inline within the element object.

See also:

• ExpressionInfo

• Sample - Update Feature Attributes

Example:

// Expression created within ExpressionInfos and is referenced in element
const expression = new ExpressionInfo({
  name: "alwaysHidden",
  expression: "1 == 0"
});

// Reference an already-defined visibilityExpression set within the ExpressionInfos
const fieldElement = new FieldElement({
  type: "field",
  fieldName: "inspemail",
  label: "Email address",
  visibilityExpression: "alwaysHidden"
});

Method Overview

Method Details

fromJSON(json){*}static

Creates a new instance of this class and initializes it with values from a JSON object generated from a product in the ArcGIS platform. 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.

Parameter:

json Object A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns:

Type	Description
*	Returns a new instance of this class.

toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns:

Type	Description
Object	The ArcGIS portal JSON representation of an instance of this class.