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  • Concepts
    • Getting started
      • Terminology
      • Developer Education
    • 🔐Authorization & Credentials
    • Payloads (sign requests)
      • 🚨Secure Payment Verification
      • Workflow
      • Lifecycle
        • Sample POS lifecycle
      • Payload Delivery
        • Deep Linking
        • QR Scanning
        • Push
        • xApps
        • Mobile (iOS/Android)
        • Desktop browser
      • Status updates
        • Websocket
        • Webhooks
          • Signature verification
        • API Call (polling)
      • Networks
      • Payload Return URL
      • Tx Explorer(s)
    • Special Transaction Types
    • Limitations
      • Rate limits
      • Transaction types
      • Push permission
    • Implementation checklist
      • Protocol specific checks
  • Environments
    • 🌎Browser ("Web3")
      • CORS (Browser)
    • 📱xApps ("dApps")
      • Requirements
      • Develop & Test
      • CORS (xApp)
      • Xumm UI interaction
      • Your own backend (Auth)
      • Style guide
      • Development & Debugging
      • xAppBuilder 🏗️
        • Connecting localhost to xAppBuilder
        • xAppBuilder FAQ
    • 📂Backend (SDK / API)
      • User identification payloads
    • 🎛️Native Apps
    • 🙇Identity (OAuth2, OpenID)
      • Test Tools
  • JS/TS SDK
    • Xaman SDK (Intro)
    • Examples / User stories
      • Sign Requests (payloads)
        • Browser
        • xApp
        • Backend
      • Verify Payload signature
      • Simple Sign Request
    • 📦SDK (syntax)
      • Xumm.ping()
      • Xumm.on(event, fn)
      • Xumm.off(event, fn)
      • Xumm.helpers { … }
        • ping()
        • getRates( … )
        • getRails()
        • getHookHash( … )
        • getHookHashes()
        • getCuratedAssets()
        • getNftokenDetail( … )
        • getKycStatus( … )
        • verifyUserTokens([ … ])
        • getTransaction( … )
      • Xumm.user { … }
      • Xumm.environment { … }
      • Xumm.payload { … }
        • create( … )
        • createAndSubscribe( … )
        • cancel( … )
        • subscribe( … )
        • get( … )
      • Xumm.xapp { … }
        • ready()
        • openSignRequest({ … })
        • selectDestination({ … })
        • scanQr()
        • tx({ … })
        • close({ … })
        • share({ … })
        • navigate({ … })
        • openBrowser({ … })
        • on(xAppEvent, fn)
        • off(xAppEvent, fn)
      • Xumm.userstore { … }
        • list()
        • get( … )
        • delete( … )
        • set( … , { … } )
      • Xumm.backendstore { … }
        • get()
        • set({ … })
        • delete()
      • Xumm.push { … }
        • event( … )
        • notification( … )
      • Xumm.runtime { … }
      • Xumm.authorize()
      • Xumm.logout()
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  1. JS/TS SDK
  2. SDK (syntax)
  3. Xumm.xapp { … }

off(xAppEvent, fn)

Certain events are sent to xApps. These events are usually an asynchronous callback containing data requested by calling one of the xApp UI actions.

The off(...) method on the Xumm SDK's xapp object allows you to deregister an event handler. For the available event handlers, please see the on(xAppEvent, fn) page.

Previouson(xAppEvent, fn)NextXumm.userstore { … }

Last updated 2 years ago

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