name: Extrinsic

description: Representation of an Extrinsic in the system. It contains the actual call, (optional) signature and encodes with an actual length prefix

https://github.com/paritytech/wiki/blob/master/Extrinsic.md#the-extrinsic-format-for-node.

Can be:

• signed, to create a transaction
• left as is, to create an inherent

# Type parameters

# S : ConstructorDef

# T : object

# V : object

# E : object

# Hierarchy

↳ Struct

↳ Extrinsic

# Implements

• Codec

# Constructors

# constructor

⊕ new Extrinsic(value?: ExtrinsicValue | AnyU8a | Method): Extrinsic

Overrides Struct.constructor

Defined in type/Extrinsic.ts:36

Parameters:

Name	Type
Optional value	ExtrinsicValue | AnyU8a | Method

Returns: Extrinsic

---

# Properties

# __@toStringTag

● __@toStringTag: string

Inherited from Map.[Symbol.toStringTag]

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.symbol.wellknown.d.ts:130

---

# size

● size: number

Inherited from Map.size

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:28

---

# Accessors

# Type

get Type(): E

Inherited from Struct.Type

Defined in codec/Struct.ts:160

description: Returns the Type description to sthe structure

Returns: E

---

# args

get args(): Array<Codec>

Defined in type/Extrinsic.ts:76

description: The arguments passed to for the call, exposes args so it is compatible with Method

Returns: Array<Codec>

---

# callIndex

get callIndex(): Uint8Array

Defined in type/Extrinsic.ts:83

description: The actual [sectionIndex, methodIndex] as used in the Method

Returns: Uint8Array

---

# data

get data(): Uint8Array

Defined in type/Extrinsic.ts:90

description: The actual data for the Method

Returns: Uint8Array

---

# encodedLength

get encodedLength(): number

Overrides Struct.encodedLength

Defined in type/Extrinsic.ts:97

description: The length of the value when encoded as a Uint8Array

Returns: number

---

# hash

get hash(): Hash

Defined in type/Extrinsic.ts:106

description: Convernience function, encodes the extrinsic and returns the actual hash

Returns: Hash

---

# isEmpty

get isEmpty(): boolean

Inherited from Struct.isEmpty

Defined in codec/Struct.ts:145

description: Checks if the value is an empty value

Returns: boolean

---

# isSigned

get isSigned(): boolean

Defined in type/Extrinsic.ts:115

description: true id the extrinsic is signed

Returns: boolean

---

# length

get length(): number

Defined in type/Extrinsic.ts:122

description: The length of the encoded value

Returns: number

---

# meta

get meta(): FunctionMetadata

Defined in type/Extrinsic.ts:129

description: The FunctionMetadata that describes the extrinsic

Returns: FunctionMetadata

---

# method

get method(): Method

Defined in type/Extrinsic.ts:136

description: The Method this extrinsic wraps

Returns: Method

---

# signature

get signature(): ExtrinsicSignature

Defined in type/Extrinsic.ts:143

description: The ExtrinsicSignature

Returns: ExtrinsicSignature

---

# Methods

# __@iterator

▸ __@iterator(): IterableIterator<[keyof S, Codec]>

Inherited from Map.[Symbol.iterator]

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.iterable.d.ts:113

Returns an iterable of entries in the map.

Returns: IterableIterator<[keyof S, Codec]>

---

# addSignature

▸ addSignature(signer: Address | Uint8Array, signature: Uint8Array, nonce: AnyNumber, era?: Uint8Array): Extrinsic

Defined in type/Extrinsic.ts:150

description: Add an ExtrinsicSignature to the extrinsic (already generated)

Parameters:

Name	Type
signer	Address | Uint8Array
signature	Uint8Array
nonce	AnyNumber
Optional era	Uint8Array

Returns: Extrinsic

---

# clear

▸ clear(): void

Inherited from Map.clear

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:22

Returns: void

---

# delete

▸ delete(key: keyof S): boolean

Inherited from Map.delete

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:23

Parameters:

Name	Type
key	keyof S

Returns: boolean

---

# entries

▸ entries(): IterableIterator<[keyof S, Codec]>

Inherited from Map.entries

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.iterable.d.ts:118

Returns an iterable of key, value pairs for every entry in the map.

Returns: IterableIterator<[keyof S, Codec]>

---

# eq

▸ eq(other?: any): boolean

Implementation of Codec.eq

Inherited from Struct.eq

Defined in codec/Struct.ts:176

description: Compares the value of the input to see if there is a match

Parameters:

Name	Type
Optional other	any

Returns: boolean

---

# forEach

▸ forEach(callbackfn: function, thisArg?: any): void

Inherited from Map.forEach

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:24

Parameters:

Name	Type
callbackfn	function
Optional thisArg	any

Returns: void

---

# get

▸ get(name: keyof S): Codec | undefined

Inherited from Struct.get

Overrides Map.get

Defined in codec/Struct.ts:184

description: Returns a specific names entry in the structure

Parameters:

Name	Type	Description
name	keyof S	The name of the entry to retrieve

Returns: Codec | undefined

---

# getAtIndex

▸ getAtIndex(index: number): Codec

Inherited from Struct.getAtIndex

Defined in codec/Struct.ts:191

description: Returns the values of a member at a specific index (Rather use get(name) for performance)

Parameters:

Name	Type
index	number

Returns: Codec

---

# has

▸ has(key: keyof S): boolean

Inherited from Map.has

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:26

Parameters:

Name	Type
key	keyof S

Returns: boolean

---

# keys

▸ keys(): IterableIterator<keyof S>

Inherited from Map.keys

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.iterable.d.ts:123

Returns an iterable of keys in the map

Returns: IterableIterator<keyof S>

---

# set

▸ set(key: keyof S, value: Codec): this

Inherited from Map.set

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.collection.d.ts:27

Parameters:

Name	Type
key	keyof S
value	Codec

Returns: this

---

# sign

▸ sign(account: KeyringPair, options: SignatureOptions): Extrinsic

Defined in type/Extrinsic.ts:159

description: Sign the extrinsic with a specific keypair

Parameters:

Name	Type
account	KeyringPair
options	SignatureOptions

Returns: Extrinsic

---

# toArray

▸ toArray(): Array<Codec>

Inherited from Struct.toArray

Defined in codec/Struct.ts:198

description: Converts the Object to an standard JavaScript Array

Returns: Array<Codec>

---

# toHex

▸ toHex(): string

Implementation of Codec.toHex

Overrides Struct.toHex

Defined in type/Extrinsic.ts:168

description: Returns a hex string representation of the value

Returns: string

---

# toJSON

▸ toJSON(): any

Implementation of Codec.toJSON

Overrides Struct.toJSON

Defined in type/Extrinsic.ts:175

description: Converts the Object to JSON, typically used for RPC transfers

Returns: any

---

# toString

▸ toString(): string

Implementation of Codec.toString

Inherited from Struct.toString

Defined in codec/Struct.ts:226

description: Returns the string representation of the value

Returns: string

---

# toU8a

▸ toU8a(isBare?: undefined | false | true): Uint8Array

Implementation of Codec.toU8a

Overrides Struct.toU8a

Defined in type/Extrinsic.ts:183

description: Encodes the value as a Uint8Array as per the parity-codec specifications

Parameters:

Name	Type	Description
Optional isBare	undefined | false | true	true when the value has none of the type-specific prefixes (internal)

Returns: Uint8Array

---

# values

▸ values(): IterableIterator<Codec>

Inherited from Map.values

Defined in /home/travis/build/polkadot-js/api/node_modules/typescript/lib/lib.es2015.iterable.d.ts:128

Returns an iterable of values in the map

Returns: IterableIterator<Codec>

---

# <Static> decodeExtrinsic

▸ decodeExtrinsic(value: ExtrinsicValue | AnyU8a | Method): ExtrinsicValue | Array<number> | Uint8Array

Defined in type/Extrinsic.ts:44

Parameters:

Name	Type
value	ExtrinsicValue | AnyU8a | Method

Returns: ExtrinsicValue | Array<number> | Uint8Array

---

# <Static> with

▸ with<S>(Types: S): Constructor<Struct<S>>

Inherited from Struct.with

Defined in codec/Struct.ts:125

Type parameters:

# S : ConstructorDef

Parameters:

Name	Type
Types	S

Returns: Constructor<Struct<S>>

---