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    upgradeneeded

    The upgradeneeded handler is executed when an attempt was made to open a database with a version number higher than its current version.

    General info

    Specification
    IndexedDB
    Interface
    Event
    Bubbles
    No
    Cancelable
    No
    Target
    IDBRequest
    Default Action
    None

    Properties

    Property Type Description
    target Read only EventTarget The request concerned by this event
    type Read only DOMString The type of event.
    bubbles Read only boolean Does the event normally bubble?
    cancelable Read only boolean Is it possible to cancel the event?

    Example

    var req1 = indexedDB.open("addressbook", 999);
     
    req1.onupgradeneeded = function( event ) {
      // time for a versionchange transaction
     
    };
    
    // which is equivalent to
    req1.addEventListener("upgradeneeded", function( event ) {
      // time for a versionchange transaction
     
    });
    
    

    See also

    Document Tags and Contributors

    Contributors to this page: Sheppy, ethertank, louisremi, teoli
    Last updated by: teoli,