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    IDBFactory

    The IDBFactory interface of the IndexedDB API lets applications asynchronously access the indexed databases. The object that implements the interface is window.indexedDB. You open — that is, create and access — and delete a database with this object, and not directly with IDBFactory.

    Methods

    IDBFactory.open
    The current method to request opening a connection to a database.
    IDBFactory.open, the original version
    An obsolete method to request opening a connection to a database, still implemented by some browsers.
    IDBFactory.deleteDatabase
    A method to request the deletion of a database.
    IDBFactory.cmp
    A method that compares two keys and returns a result indicating which one is greater in value.

    Example

    In the following code snippet, we make a request to open a database, and include handlers for the success and error cases. For a full working example, see our To-do Notifications app (view example live.)

    var note = document.querySelector("ul");
    
    // In the following line, you should include the prefixes of implementations you want to test.
    window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
    // DON'T use "var indexedDB = ..." if you're not in a function.
    // Moreover, you may need references to some window.IDB* objects:
    window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
    window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;
    // (Mozilla has never prefixed these objects, so we don't need window.mozIDB*)
    
    // Let us open version 4 of our database
    var DBOpenRequest = window.indexedDB.open("toDoList", 4);
    
    // these two event handlers act on the database being opened successfully, or not
    DBOpenRequest.onerror = function(event) {
      note.innerHTML += '<li>Error loading database.</li>';
    };
     
    DBOpenRequest.onsuccess = function(event) {
      note.innerHTML += '<li>Database initialised.</li>';
        
      // store the result of opening the database in the db variable. This is used a lot later on, for opening transactions and suchlike.
      db = request.result;
    };
    

    Specifications

    Specification Status Comment
    Indexed Database API
    The definition of 'IDBFactory' in that specification.
    Candidate Recommendation  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 23webkit
    24
    10 moz
    16.0 (16.0)
    10, partial 15 7.1
    Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
    Basic support 4.4 22.0 (22.0) 1.0.1 10 22 Not supported

    Be careful in Chrome as it still implements the old specification along with the new one. Similarly it still has the prefixed webkitIndexedDB property even if the unprefixed indexedDB is present.

    See also

    Document Tags and Contributors

    Last updated by: fscholz,