--- lang: en title: 'API docs: authentication-jwt.jwtauthenticationstrategy' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/authentication-jwt permalink: /doc/en/lb4/apidocs.authentication-jwt.jwtauthenticationstrategy.html --- [Home](./index.md) > [@loopback/authentication-jwt](./authentication-jwt.md) > [JWTAuthenticationStrategy](./authentication-jwt.jwtauthenticationstrategy.md) ## JWTAuthenticationStrategy class **Signature:** ```typescript export declare class JWTAuthenticationStrategy implements AuthenticationStrategy ``` **Implements:** [AuthenticationStrategy](./authentication.authenticationstrategy.md) ## Constructors
Constructor Modifiers Description
[(constructor)(tokenService)](./authentication-jwt.jwtauthenticationstrategy._constructor_.md) Constructs a new instance of the `JWTAuthenticationStrategy` class
## Properties
Property Modifiers Type Description
[name](./authentication-jwt.jwtauthenticationstrategy.name.md) string
[tokenService](./authentication-jwt.jwtauthenticationstrategy.tokenservice.md) [TokenService](./authentication.tokenservice.md)
## Methods
Method Modifiers Description
[authenticate(request)](./authentication-jwt.jwtauthenticationstrategy.authenticate.md)
[extractCredentials(request)](./authentication-jwt.jwtauthenticationstrategy.extractcredentials.md)