XHR Object Methods & Working with Text

This video tutorial explains how to use the XHR object to fetch data from a text file and display it on a webpage asynchronously. It covers setting up a basic HTML structure, creating and configuring an XHR object, handling responses, checking HTTP status codes, understanding ready state values, and error handling. The tutorial concludes with displaying the fetched data in the browser and a brief mention of JSON as a more common data format.

What is the primary purpose of using the XHR object in web applications?

• To create animations on a webpage

• To fetch data asynchronously from a server

• To manage user sessions

• To style web pages with CSS

Which HTML element is used to trigger the data fetching process in the tutorial?

• A form

• A div

• A link

• A button

What method is used to specify the type of request and the file name in an XHR object?

• send

• open

• close

• fetch

What does an HTTP status code of 200 indicate?

• The request is forbidden

• The page is not found

• The server is unavailable

• The request was successful

What is the purpose of the send method in an XHR request?

• To close the connection

• To finalize and send the request

• To initialize the XHR object

• To log the response to the console

Which ready state value indicates that the request has been completed and the response is ready?

• 4

• 3

• 1

• 0

What is the purpose of the onreadystatechange method in XHR?

• To execute code when the ready state changes

• To track the progress of the request

• To open a new request

• To handle errors during the request

How can you display a loading spinner while data is being fetched using XHR?

• Using the onerror method

• Using the onprogress method

• Using the onload method

• Using the open method

What should you do if an error occurs during an XHR request?

• Log it using the onerror method

• Restart the request

• Ignore it

• Use the open method again

How is the fetched data displayed in the browser in the tutorial?

• By logging it to the console

• By updating the innerHTML of a div

• By using an alert box

• By refreshing the page