indexedDB-post-2.js

todoDB.indexedDB.open = function() {
  var request = indexedDB.open(dbName, dbVersion);

  request.onsuccess = function(e) {
    console.log ("success to open DB: " + dbName);
    todoDB.indexedDB.db = e.target.result;
    var db = todoDB.indexedDB.db;
    if (db.setVersion) {
      console.log("in old setVersion: "+ db.setVersion);
        if (db.version != dbVersion) {
            var req = db.setVersion(dbVersion);
            req.onsuccess = function () {
              if(db.objectStoreNames.contains("todo")) {
                db.deleteObjectStore("todo");
              }
              var store = db.createObjectStore("todo", {keyPath: "timeStamp"});
              var trans = req.result;
              trans.oncomplete = function(e) {
                console.log("== trans oncomplete ==");
                todoDB.indexedDB.getAllTodoItems();
              }
            };
        }
        else {
            todoDB.indexedDB.getAllTodoItems();
        }
    }
    else {
        todoDB.indexedDB.getAllTodoItems();
    }

  }