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require(["esri/layers/support/FieldsIndex"], function(FieldsIndex) { /* code goes here */ });
Class: esri/layers/support/FieldsIndex
Since: ArcGIS API for JavaScript 4.12

This class provides convenient methods that can be used to make case-insensitive lookups for a field by its name. It also provides more information such as the list of date fields in a layer.

Constructors

new FieldsIndex(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.
NameTypeSummaryClass
Field[]|Object[]

An array of date fields or field json objects.

more details
more detailsFieldsIndex

Property Details

dateFields Field[]|Object[]

An array of date fields or field json objects.

Default Value:[]

Method Overview

NameReturn TypeSummaryClass
Field

Returns a field with the specified field name.

more details
more detailsFieldsIndex
Boolean

Checks if a field with the specified field name exists in the layer.

more details
more detailsFieldsIndex
Boolean

Checks if a field with the specified field name is a date field.

more details
more detailsFieldsIndex

Method Details

get(fieldName){Field}

Returns a field with the specified field name.

Parameter:
fieldName String

The name of the field. The name is case-insensitive.

Returns:
TypeDescription
FieldReturns a field with a given name.
has(fieldName){Boolean}

Checks if a field with the specified field name exists in the layer.

Parameter:
fieldName String

The name of the field. The name is case-insensitive.

Returns:
TypeDescription
BooleanReturns true if the field exists otherwise returns false.
isDateField(fieldName){Boolean}

Checks if a field with the specified field name is a date field.

Parameter:
fieldName String

The name of the field.

Returns:
TypeDescription
BooleanReturns true if the field type is date otherwise returns false.

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