RequestMode enum

The mode read-only property of the Request interface contains the mode of the request (e.g., cors, no-cors, same-origin, navigate or websocket.) This is used to determine if cross-origin requests lead to valid responses, and which properties of the response are readable.

MDN reference

Inheritance

• Object
• Enum
• RequestMode

Constructors

RequestMode(String value)

const

Values

sameOrigin → const RequestMode

If a request is made to another origin with this mode set, the result is an error. You could use this to ensure that a request is always being made to your origin.

const RequestMode('same-origin')

noCors → const RequestMode

Prevents the method from being anything other than HEAD, GET or POST, and the headers from being anything other than simple headers. If any ServiceWorkers intercept these requests, they may not add or override any headers except for those that are simple headers. In addition, JavaScript may not access any properties of the resulting Response. This ensures that ServiceWorkers do not affect the semantics of the Web and prevents security and privacy issues arising from leaking data across domains.

const RequestMode('no-cors')

cors → const RequestMode

Allows cross-origin requests, for example to access various APIs offered by 3rd party vendors. These are expected to adhere to the CORS protocol. Only a limited set of headers are exposed in the Response, but the body is readable.

const RequestMode('cors')

navigate → const RequestMode

A mode for supporting navigation. The navigate value is intended to be used only by HTML navigation. A navigate request is created only while navigating between documents.

const RequestMode('navigate')

websocket → const RequestMode

A special mode used only when establishing a WebSocket connection.

const RequestMode('websocket')

Properties

hashCode → int

The hash code for this object.

no setter, inherited

index → int

A numeric identifier for the enumerated value.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → String

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

values → const List<RequestMode>

A constant List of the values in this enum, in order of their declaration.