# Field Object `Field` objects are the primary mechanism for accessing and manipulating field data and properties. They can be accessed via the [Context API](https://docs.feathery.io/develop/context-api).

Field Property	Type	Description
`value`	`optional polymorphic: boolean \| string \| string[] \| number \| number[] \| Promise \| Promise[] \| Record<string, any>`	Read/write property for getting or setting the field value. The type of the value varies depending upon the field type. The value is an array type for multi-valued field types (e.g. multi select, etc.) or if the field is repeating. `null` if no submission, `Promise<File>` if file submission, Base64 `string` if signature.
`required`	`boolean`	If the field must be filled out before submitting. Read/write property.
`disabled`	`boolean`	If the field is disabled or interactable. Read/write property.
`options`	`string[] \| { value: string; label ?: string; image ?: string }[]`	Allowed options to choose from, if the field specifies them (e.g. dropdown, radio buttons, etc.). Read/write property.
`type`	`string enum`	The field type (e.g. `textarea`, `checkbox`, etc.). Only available for fields on the loaded form. Read-only property.
`displayText`	`optional string`	The text to display to your user along with the field Read-only property.
`onThisForm`	`boolean`	True if this field appears on the loaded form. False if the field is from another form. Read-only property.
`isHiddenField`	`boolean`	True if this field is one of the special 'hidden' fields that do not appear on a form. False if this field is a regular form field. Read-only property.
`placeholder`	`string`	The placeholder text for the field that is shown when the field has no value. Read/write property.
`setStyles()`	`(styles: Record<string, any>) => void`	Dynamically update the styles of a form field. Style API Reference
`setError()`	`(...error: string \| {index:number; message: string}) => void`	Method used to set the error of a field. The error may be passed as text or as an object. An error with the shape `{message: <fieldErrorString>, index: <fieldIndex>}}` will set an error for a specific repeatable field across its repetitions. Setting an error prevents the step from submitting.
`equals()`	`(...values: string \| Field) => boolean`	Returns true if the field equals any of the values passed. A value may be a string or another Field.
`notEquals()`	`(...values: string \| Field) => boolean`	Returns true if the field does not equal any of the values passed. A value may be a string or another Field.
`greaterThan()`	`(...values: string \| Field) => boolean`	Returns true if the field is greater than any of the values passed. A value may be a string or another Field.
`greaterThanOrEqual()`	`(...values: string \| Field) => boolean`	Returns true if the field is greater than or equal to any of the values passed. A value may be a string or another Field.
`lessThan()`	`(...values: string \| Field) => boolean`	Returns true if the field is less than any of the values passed. A value may be a string or another Field.
`lessThanOrEqual()`	`(...values: string \| Field) => boolean`	Returns true if the field is less than or equal to any of the values passed. A value may be a string or another Field.
`isFilled()`	`() => boolean`	Returns true if the field contains a value that was set by the user or by logic.
`isEmpty()`	`() => boolean`	Returns true if the field does not contains a value, i.e. the field was not set by the user or by logic.
`isTrue()`	`() => boolean`	Returns true if the field is true or truthy.
`isFalse()`	`() => boolean`	Returns true if the field is true or falsy.
`contains()`	`(...values: string \| Field) => boolean`	Returns true if the field text contains the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`doesNotContain()`	`(...values: string \| Field) => boolean`	Returns true if the field text does not contain the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`containsIgnoreCase()`	`(...values: string \| Field) => boolean`	Returns true if the field text contains the text of any of the values passed. The text comparison ignores upper/lower case differences and will match on different cases. A value may be a string or another Field.
`doesNotContainIgnoreCase()`	`(...values: string \| Field) => boolean`	Returns true if the field text does not contain the text of any of the values passed. The text comparison ignores upper/lower case differences and will match on different cases. A value may be a string or another Field.
`startsWith()`	`(...values: string \| Field) => boolean`	Returns true if the field text starts with the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`doesNotStartWith()`	`(...values: string \| Field) => boolean`	Returns true if the field text does not start with the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`endsWith()`	`(...values: string \| Field) => boolean`	Returns true if the field text ends with the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`doesNotEndWith()`	`(...values: string \| Field) => boolean`	Returns true if the field text does not end with the text of any of the values passed. The text must match on upper/lower case exactly. A value may be a string or another Field.
`isNumerical()`	`() => boolean`	Returns true if the field value is a number.
`isText()`	`() => boolean`	Returns true if the field value is text and not a number.
`selectionsInclude()`	`(...values: string \| Field) => boolean`	Used for multi-valued fields. Returns true if any of the field's values exactly equal the text of any of the values passed as parameters. A value may be a string or another Field.
`selectionsDoNotInclude()`	`(...values: string \| Field) => boolean`	Used for multi-valued fields. Returns true if none of the field's values exactly equal the text of any of the values passed as parameters. A value may be a string or another Field.