isSessionStorageEnabled javascript Code Snippet in 2025

Checks if sessionStorage is enabled.

• Use a try...catch block to return true if all operations complete successfully, false otherwise.
• Use Storage.setItem() and Storage.removeItem() to test storing and deleting a value in window.sessionStorage.

const isSessionStorageEnabled = () => {
  try {
    const key = `__storage__test`;
    window.sessionStorage.setItem(key, null);
    window.sessionStorage.removeItem(key);
    return true;
  } catch (e) {
    return false;
  }
};

isSessionStorageEnabled(); // true, if sessionStorage is accessible