IndexedDB: Add, Delete, and Get from Object Store

gistfile1.js

window.indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
window.IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
window.IDBKeyRange = window.IDBKeyRange || window.webkitIDBKeyRange || window.msIDBKeyRange;

if(!window.indexedDB) {
  console.log("IndexDB is not supported on your browser");
}
function reportError(event) {
  console.log("Error with Database. " + event.target.errorCode);
}
function reportResult(event) {
  console.log("Got one. " + event.target.result);
}

var dbRequest = window.indexedDB.open("testDatabase"); //second optional positive integer database version can follow
var dbObject;
var customerData = [
  { ssn: "444-44-4444", name: "Bill", age: 35, email: "bill@company.com" },
  { ssn: "555-55-5555", name: "Donna", age: 32, email: "donna@home.org" },
  { ssn: "666-66-6666", name: "Randy", age: 30, email: "randy@abc.com" }
];
dbRequest.onerror = reportError;
dbRequest.onsuccess = function(event) {
  dbObject = dbRequest.result;
  dbObject.onerror = reportError;
  
  var transaction = dbObject.transaction(["customers"], "readwrite");
  //first argument is a list of object stores the transaction will affect. Empty for all object stores.
  //second argument is optional. By default, it's readonly
  transaction.onerror = reportError;
  transaction.oncomplete = reportResult;
  
  var objectStore = transaction.objectStore("customers");
  for(var i = 0; i < customerData.length; i++) {
    var objectStoreAddRequest = objectStore.add(customerData[i]);
    objectStoreAddRequest.onsuccess = reportResult;
  }
  
  var objectStoreDelRequest = objectStore.delete("444-44-4444");
  objectStoreDelRequest.onerror = reportError;
  objectStoreDelRequest.onsuccess = reportResult;
  
  var objectStoreGetRequest = objectStore.get("555-55-5555");
  objectStoreGetRequest.onerror = reportError;
  objectStoreGetRequest.onsuccess = function(event) {
    console.log(event.target.result.name, event.target.result.age, event.target.result.email);
  };
};
dbRequest.onupgradeneeded = function(event) {
  //Only used when alter object store structure
  dbObject = dbRequest.result;
  dbObject.onerror = reportError;
  
  var customerObjectStore = dbObject.createObjectStore("customers", { keyPath: ssn });
  customerObjectStore.createIndex("name", "name", {unique: false});
  customerObjectStore.createIndex("email", "email", {unique: true});
};