IDBRequest: readyState property

The readyState read-only property of the IDBRequest interface returns the state of the request.

Every request starts in the pending state. The state changes to done when the request completes successfully or when an error occurs.

Note: This feature is available in Web Workers

Value

One of the following strings:

pending

Returned if the request is still ongoing.

done

Returned if the request has already completed.

Examples

The following example requests a given record title, onsuccess gets the associated record from the IDBObjectStore (made available as objectStoreTitleRequest.result), updates one property of the record, and then puts the updated record back into the object store in another request. The readyState of the 2nd request is logged to the developer console. For a full working example, see our To-do Notifications app (View the example live).

js

const title = "Walk dog";

// Open up a transaction as usual
const objectStore = db
  .transaction(["toDoList"], "readwrite")
  .objectStore("toDoList");

// Get the to-do list object that has this title as it's title
const objectStoreTitleRequest = objectStore.get(title);

objectStoreTitleRequest.onsuccess = () => {
  // Grab the data object returned as the result
  const data = objectStoreTitleRequest.result;

  // Update the notified value in the object to "yes"
  data.notified = "yes";

  // Create another request that inserts the item
  // back into the database
  const updateTitleRequest = objectStore.put(data);

  // Log the readyState of this request
  console.log(
    `The readyState of this request is ${updateTitleRequest.readyState}`
  );

  // When this new request succeeds, run the displayData()
  // function again to update the display
  updateTitleRequest.onsuccess = () => {
    displayData();
  };
};

Specifications

Specification
Indexed Database API 3.0
# ref-for-dom-idbrequest-readystate①

Browser compatibility

BCD tables only load in the browser

See also