This snippet shows how to add another value to the object store in IndexedDB

add-to-object-store-indexeddb.js

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

//Again, following on from https://gist.github.com/luke-denton/55be283cbddf6f0c0d362fd95fc9280a

dbPromise.then(function(db) {
  var tx = db.transaction('keyval', 'readwrite');
  var keyValStore = tx.objectStore('keyval');
  keyValStore.put('bar', 'foo');
  return tx.complete;
}).then(function() {
  console.log("Success");
});