This snippet shows how to read from an object store in IndexedDB

read-from-object-store-indexeddb.js

// Offline Web Applications course on Udacity https://classroom.udacity.com/courses/ud899

//Following on from https://gist.github.com/luke-denton/55be283cbddf6f0c0d362fd95fc9280a

dbPromise.then(function(db) {
  var tx = db.transaction('keyval');
  var keyValStore = tx.objectStore('keyval');
  return keyValStore.get('hello');
}).then(function(val) {
  console.log(val); //Log the value of the key 'hello'
});