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    IDBCursor.continue()

    The continue() method of the IDBCursor interface advances the cursor to the next position along its direction, to the item whose key matches the optional key parameter. If no key is specified, the cursor advances to the immediate next position, based on the its direction.

    Syntax

    cursor.continue(optionalKey);

    Parameters

    optionalKey
    The key to position the cursor at.

    Exceptions

    This method may raise a DOMException with a DOMError of one of the following types:

    Exception Description
    TransactionInactiveError This IDBCursor's transaction is inactive.
    DataError

    The key parameter may have any of the following conditions:

    • The key is not a valid key.
    • The key is less than or equal to this cursor's position and the cursor's direction is next or nextunique.
    • The key is greater than or equal to this cursor's position and this cursor's direction is prev or prevunique.
    InvalidStateError The cursor is currently being iterated or has iterated past its end.
     

    Example

    In this simple fragment we create a transaction, retrieve an object store, then use a cursor to iterate through all the records in the object store. The cursor does not require us to select the data based on a key; we can just grab all of it. Also note that in each iteration of the loop, you can grab data from the current record under the cursor object using cursor.value.foo. For a complete working example, see our IDBCursor example (view example live.)

    function displayData() {
      var transaction = db.transaction(['rushAlbumList'], "readonly");
      var objectStore = transaction.objectStore('rushAlbumList');
    
      objectStore.openCursor().onsuccess = function(event) {
        var cursor = event.target.result;
        if(cursor) {
          var listItem = document.createElement('li');
          listItem.innerHTML = cursor.value.albumTitle + ', ' + cursor.value.year;
          list.appendChild(listItem);  
    
          cursor.continue();
        } else {
          console.log('Entries all displayed.');
        }
      };
    };

    Specifications

    Specification Status Comment
    Indexed Database API
    The definition of 'continue()' 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

    See also

     

    Document Tags and Contributors

    Contributors to this page: garaboncias, teoli, linkwisdom, chrisdavidmills
    Last updated by: teoli,