indexedDB API exercise

db.js

// assuming we have indexedDB
var version = 3;
var dbConn = indexedDB.open("db", version);
var db;

dbConn.onerror = function(e) {
  console.log('error connecting to be');
};

dbConn.onsuccess = function(e) {
  db = e.target.result;
};

if (!db.objectStoreNames.contains("store")) {
  db.createObjectStore("store", { keyPath: 'id' });
}