OptionalaliasThe field alias (human-readable name).
OptionaldomainA domain object that provides the attribute domain information for the field, if a domain exists.
OptionaleditableWhether this field is editable.
OptionalexactA Boolean defining whether or not the field is an exact match.
OptionallengthA number defining how many characters are allowed in a string field.
A string defining the field name.
OptionalnullableWhether this field can have a null value.
OptionaltypeType of the Field. See FieldJsonType.
Optionalvisible
Contains information about an attribute field. This field could come from a feature collection or a single layer in a map service. Used in layerDefinition.
See https://developers.arcgis.com/web-map-specification/objects/field/ https://developers.arcgis.com/web-scene-specification/objects/field/.