答案非常相似，你需要创建一个compound index，然后从索引中以相反的顺序检索数据。在这个例子中，我使用时间戳存储日期。
首先需要在onupgradeneeded事件期间创建复合索引：

store.createIndex('nametimestamp', ['text', 'timeStamp']);
    //text and timestamp are my field names

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然后将其用于搜索功能：

searchIndexedDB = function (value, callback) {
      var request = indexedDB.open(dbName);
      request.onsuccess = function(e) {
        var db = e.target.result;
        var trans = db.transaction(objectStoreName, 'readonly');
        var store = trans.objectStore(objectStoreName);
        var index = store.index('nametimestamp');
        var keyRange = IDBKeyRange.bound([value,0], [value, new Date().getTime()]);
        //open the index for all dates and for only one value
        var openCursorRequest = index.openCursor(keyRange, 'prev');
        //open the database sorted by time stamp - descending 

        openCursorRequest.onsuccess = function(e) {
            if(e.target.result)
                callback(e.target.result.value);
        };
        
        trans.oncomplete = function(e) {
            db.close();
        };

        openCursorRequest.onerror = function(e) {
            console.log("Error Getting: ", e);
        };
      };
      request.onerror = myStorage.indexedDB.onerror;
    }

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