check if the store and its document exists

[KnightCoder]

How to check if the already created store and document exists. See the example code below used to create and store data using Lawnchair.js

var test = new Lawnchair({ name: "test", adapter: ["indexed-db", "webkit-sqlite", "ie-userdata", "blackberry-persistent-store", "dom", "window-name", "gears-sqlite", "memory"] });
test.save({ key: "mykey", data: testData});