Indexed DB API connect

gistfile1.js

function openDb() {
  	var req = indexedDB.open(DB_NAME, DB_VERSION);
		req.onsuccess = function (evt) { // success connection to the database so display rows
			db = this.result;
			displayRows();
		};
		req.onerror = function (evt) { // error - display error
			displayActionFailure("DB error: "+ evt.target.errorCode);
		};
		req.onupgradeneeded = function (evt) { // upgrade version has changed so upgrade
			var store = evt.currentTarget.result.createObjectStore(
				DB_TABLE_NAME, { keyPath: 'id', autoIncrement: true });
		
			store.createIndex('title', 'title', { unique: false }); // create fields
			//store.createIndex('contents', 'contents', { unique: false }); // any other data you wish to add to the list
		};
	}

	function getObjectStore(storename, mode) {
		var tx = db.transaction(storename, mode);
		return tx.objectStore(storename);
	}