Web Development: Understanding AJAX

Play an AI-generated podcast conversation about this lesson

What is the primary purpose of AJAX in web development?

To create a new web server
To create a new programming language
To update parts of a web page without reloading the whole page (correct)
To replace JavaScript and HTML DOM

What is the XMLHttpRequest object used for in AJAX?

To display data on a web page
To create a new web page
To perform synchronous communication between client and server
For asynchronous communication between client and server (correct)

What is the main function of the XMLHttpRequest object in AJAX?

To send request to a server only
To receive data from a server, send request to a server, and update the web page (correct)
To update the web page without reloading the page
To receive data from a server only

What is the relationship between AJAX and JavaScript?

AJAX uses a combination of JavaScript and HTML DOM (C) Signup and view all the answers

What is true about AJAX?

AJAX is not a programming language (A) Signup and view all the answers

What does the attribute selector in jQuery use to select the attributes of an element?

Brackets ( [ ] ) (D) Signup and view all the answers

What symbol is used to select the element’s id in jQuery?

A hash (#) (A) Signup and view all the answers

How are multiple elements selected in a single statement using jQuery?

Using a comma (,) (B) Signup and view all the answers

What is the purpose of the descendant selector in jQuery?

To select elements in accordance with the hierarchy provided (A) Signup and view all the answers

What is the purpose of the html() function in jQuery?

To get and set the container tags (B) Signup and view all the answers

What is the purpose of the callback function in jQuery?

To execute a function right after the effect is finished (A) Signup and view all the answers

What is the purpose of the send() method in XMLHttpRequest?

To send the request to the server (A) Signup and view all the answers

What is the value of the status property when the request is finished and the response is ready?

200 (C) Signup and view all the answers

What is the purpose of the onReadyStateChange property?

To define a function to be called when the readyState property changes (C) Signup and view all the answers

What is the purpose of the XMLHttpRequest object?

To send a request to a web server (D) Signup and view all the answers

What is the difference between the responseText and responseXML properties?

responseText returns the response as text, while responseXML returns the response as XML (C) Signup and view all the answers

What is the sequence of events in an AJAX request?

An event occurs, JavaScript sends a request, the server processes the request, the response is read, and proper action is performed (A) Signup and view all the answers

What is the effect of the fadeOut() function in jQuery?

Hides the selected element with a fading effect without a given speed (A) Signup and view all the answers

What is the main difference between Bootstrap 2 and Bootstrap 3?

Bootstrap 2 was a minor update, while Bootstrap 3 was a major rewrite (B) Signup and view all the answers

What is the purpose of the container class in Bootstrap?

To set a max-width for the container at each breakpoint (B) Signup and view all the answers

What is the difference between container and container-fluid in Bootstrap?

Container is fixed-width, while container-fluid is full-width (B) Signup and view all the answers

What is the effect of the fadeTo() function in jQuery?

Hides the selected element with a fading effect and a given speed and a given point of transparency (A) Signup and view all the answers

What is the purpose of the toggle() function in jQuery?

To hide or show the selected element with a fading effect and a given speed (D) Signup and view all the answers

What is the purpose of the Use.container-fluid class?

To create a full width container, spanning the entire width of the viewport (D) Signup and view all the answers

What is the underlying technology used in Bootstrap's grid system?

Flexbox (C) Signup and view all the answers

What are Bootstrap containers used for?

To contain, pad, and align content within a given device or viewport (A) Signup and view all the answers

What is the purpose of badges in Bootstrap?

To provide a counter as part of links or buttons (B) Signup and view all the answers

What is a carousel in Bootstrap?

A slideshow for cycling through a series of content (C) Signup and view all the answers