IDBTransaction: abort() method

abort() 

const note = document.getElementById("notifications"); // an instance of a db object for us to store the IDB data in let db; // Let us open our database const DBOpenRequest = window.indexedDB.open("toDoList", 4); DBOpenRequest.onsuccess = (event) => { note.appendChild(document.createElement("li")).textContent = "Database initialized."; // store the result of opening the database in the db variable. This is used a lot below db = DBOpenRequest.result; // Run the addData() function to add the data to the database addData(); }; function addData() { // Create a new object ready for being inserted into the IDB const newItem = [ { taskTitle: "Walk dog", hours: 19, minutes: 30, day: 24, month: "December", year: 2013, notified: "no", }, ]; // open a read/write db transaction, ready for adding the data const transaction = db.transaction(["toDoList"], "readwrite"); // report on the success of opening the transaction transaction.oncomplete = (event) => { note.appendChild(document.createElement("li")).textContent = "Transaction completed: database modification finished."; }; transaction.onerror = (event) => { note.appendChild(document.createElement("li")).textContent = "Transaction not opened due to error. Duplicate items not allowed."; }; // create an object store on the transaction const objectStore = transaction.objectStore("toDoList"); // add our newItem object to the object store const objectStoreRequest = objectStore.add(newItem[0]); objectStoreRequest.onsuccess = (event) => { // report the success of the request (this does not mean the item // has been stored successfully in the DB - for that you need transaction.onsuccess) note.appendChild(document.createElement("li")).textContent = "Request successful."; }; // Abort the transaction we just did transaction.abort(); }