Add & Get From Local Storage

The video tutorial explains how to persist data in a web application using local storage. It covers setting up a storage controller with an immediately invoked function expression (IIFE), storing items in local storage using JSON.stringify, and retrieving them with JSON.parse. The tutorial also demonstrates how to update and delete items in local storage, ensuring changes are reflected in the user interface. The importance of handling data persistence to maintain application state across sessions is emphasized.

What problem does the application face without data persistence?

• Data is permanently stored.

• Data is lost on page refresh.

• Data is shared across users.

• Data is encrypted.

What is the purpose of the storage controller in the application?

• To manage user sessions.

• To control UI elements.

• To encrypt data.

• To handle data persistence.

What is the role of JSON.stringify in storing data?

• It converts objects to strings.

• It encrypts data.

• It formats data for display.

• It compresses data.

How can you verify that data is stored in local storage?

• By checking the network tab.

• By using Chrome's application tools.

• By checking the console log.

• By refreshing the page.

What happens to session storage when the browser is closed?

• It persists data.

• It encrypts data.

• It clears data.

• It shares data across tabs.

What is the difference between local storage and session storage?

• Local storage persists data, session storage does not.

• Local storage is temporary, session storage is permanent.

• Session storage encrypts data, local storage does not.

• Session storage is shared across tabs, local storage is not.

What method is used to retrieve items from local storage?

• fetchItems

• retrieveData

• getItemFromStorage

• getItemsFromStorage

Why is JSON.parse used when retrieving data from local storage?

• To format data for display.

• To compress the data.

• To convert strings back to objects.

• To encrypt the data.

What must be done when updating or deleting items to ensure consistency?

• Update both UI and local storage.

• Update the database.

• Update the UI only.

• Update local storage only.

What is the consequence of not updating local storage when items are modified?

• Data is permanently lost.

• UI does not reflect changes.

• Data reverts on reload.

• Data is shared across users.