Using neo/indexeddb-backbone-adapter

neo-indexeddb-backbone.coffee

# Defining schema
IndexedDBBackbone.describe('todos')
  .createStore('todos', { keyPath: 'id' })
  .createIndex('todos', 'nameIndex', 'name', unique: false)

# Models & Collections
app.Todos = Backbone.Collection.extend
  database: 'todos'
  storeName: 'todos'
  #  ...

app.Todo = Backbone.Model.extend
  database: 'todos'
  storeName: 'todos'
  #  ...

# Querying
query = new IndexedDBBackbone.IDBQuery('todos', 'nameIndex')
  .bounds("a", "f").limit(5).offset(10)
todos = new app.Todos()
todos.fetch
  query: query
  success: ->
  # ...

# Transaction
Backbone.transaction [accounts], () ->
  accountA.withdraw(amount);
  accountB.deposit(amount);

  if (something_goes_wrong)
    return false # this rollbacks the transaction
  else
    return true # this commits the transaction,
, {
  success: ->
    # successful
  error: ->
    # something went wrong. everything's rollbacked. $ stay where it was.
  abort: ->
    # everything's rollbacked. $ stay where it was
}