jQuery is a lightweight, fast, and feature-rich JavaScript library designed to simplify HTML document traversing, event handling, animating, and Ajax interactions. Released in 2006 by John Resig, it has become one of the most popular tools for web development due to its concise syntax and cross-browser compatibility.
Key Features:
DOM Manipulation: Easily select and modify HTML elements using CSS-like selectors, such as `$(‘selector’).method()`.
Event Handling: Attach event listeners to elements with simple methods, e.g., `$(element).click(function() { … })`.
Animations and Effects: Create smooth transitions and animations using built-in functions like `fadeIn()`, `slideDown()`, or custom animations with `.animate()`.
AJAX Support: Simplify asynchronous HTTP requests with methods like `$.ajax()` or shorthand versions like `$.get()` and `$.post()`.
Utilities: Includes helper functions for tasks like utility arrays, string manipulation, and deferred objects for promise-like handling.
Benefits:
Efficiency: Reduces the amount of code needed for common tasks, making development faster and less error-prone.
Compatibility: Works seamlessly across major browsers, handling inconsistencies so developers don’t have to.
Extensibility: Supports plugins that extend its functionality, such as for form validation, sliders, or carousels.
Community and Resources: A large ecosystem with extensive documentation, tutorials, and a vast library of plugins available on sites like the official jQuery website.
Table of contents
- Part 1: Create an amazing jquery quiz using AI instantly in OnlineExamMaker
- Part 2: 20 jquery quiz questions & answers
- Part 3: Save time and energy: generate quiz questions with AI technology
Part 1: Create an amazing jquery quiz using AI instantly in OnlineExamMaker
The quickest way to assess the jquery knowledge of candidates is using an AI assessment platform like OnlineExamMaker. With OnlineExamMaker AI Question Generator, you are able to input content—like text, documents, or topics—and then automatically generate questions in various formats (multiple-choice, true/false, short answer). Its AI Exam Grader can automatically grade the exam and generate insightful reports after your candidate submit the assessment.
Overview of its key assessment-related features:
● Create up to 10 question types, including multiple-choice, true/false, fill-in-the-blank, matching, short answer, and essay questions.
● Automatically generates detailed reports—individual scores, question report, and group performance.
● Instantly scores objective questions and subjective answers use rubric-based scoring for consistency.
● API and SSO help trainers integrate OnlineExamMaker with Google Classroom, Microsoft Teams, CRM and more.
Automatically generate questions using AI
Part 2: 20 jquery quiz questions & answers
or
1. What is the correct way to include jQuery in an HTML file?
A. {script src=”jquery.js”}{/script}
B. {link rel=”stylesheet” href=”jquery.js”}
C. {script type=”text/javascript” src=”jquery.js”}{/script}
D. {div src=”jquery.js”}{/div}
Answer: C
Explanation: The {script} tag with type=”text/javascript” is used to load external JavaScript files like jQuery.
2. Which jQuery method is used to attach a click event to an element?
A. .click()
B. .onClick()
C. .addEvent(‘click’)
D. .bindClick()
Answer: A
Explanation: The .click() method is a shorthand for attaching a click event handler in jQuery.
3. What does the jQuery selector $(‘div’) do?
A. Selects all {div} elements
B. Selects elements with class “div”
C. Selects elements with id “div”
D. Selects the first element
Answer: A
Explanation: The $(‘div’) selector targets all {div} elements on the page.
4. How do you hide an element using jQuery?
A. $(element).hide()
B. $(element).visible(false)
C. $(element).display(‘none’)
D. $(element).hideElement()
Answer: A
Explanation: The .hide() method sets the display property of the element to none, effectively hiding it.
5. What is the purpose of the jQuery ready event?
A. Ensures code runs after the DOM is fully loaded
B. Loads external scripts
C. Animates page elements
D. Handles AJAX requests
Answer: A
Explanation: $(document).ready() waits for the DOM to be ready before executing the code inside it.
6. Which method is used to add a class to an element in jQuery?
A. .addClass()
B. .appendClass()
C. .setClass()
D. .includeClass()
Answer: A
Explanation: The .addClass() method dynamically adds one or more classes to the selected elements.
7. How can you get the text content of an element?
A. .text()
B. .html()
C. .val()
D. .content()
Answer: A
Explanation: The .text() method retrieves or sets the text content of the selected elements.
8. What does $(this) refer to in a jQuery event handler?
A. The element that triggered the event
B. The entire document
C. All elements on the page
D. The parent element
Answer: A
Explanation: Inside an event handler, $(this) refers to the specific element that the event is attached to.
9. Which jQuery method is used for AJAX GET requests?
A. $.get()
B. $.ajaxGet()
C. $.fetch()
D. $.load()
Answer: A
Explanation: The $.get() method performs an AJAX GET request to retrieve data from the server.
10. How do you select an element by its ID in jQuery?
A. $(‘#idName’)
B. $(‘.idName’)
C. $(‘idName’)
D. $[‘idName’]
Answer: A
Explanation: The selector is used for IDs, so $(‘#idName’) targets the element with that specific ID.
11. What is the effect of .fadeIn() in jQuery?
A. Gradually shows a hidden element
B. Hides an element with a fade effect
C. Slides an element down
D. Animates the element’s width
Answer: A
Explanation: The .fadeIn() method animates the opacity of an element from 0 to 1, making it visible.
12. How do you remove an element from the DOM?
A. .remove()
B. .delete()
C. .erase()
D. .detach()
Answer: A
Explanation: The .remove() method completely removes the selected elements from the DOM.
13. Which method chains multiple jQuery commands?
A. Method chaining like .hide().fadeIn()
B. Using semicolons between methods
C. Calling methods separately
D. Wrapping in a function
Answer: A
Explanation: jQuery allows chaining by returning the jQuery object, enabling methods like .hide().fadeIn().
14. What does .each() do in jQuery?
A. Iterates over a set of elements
B. Adds elements to the DOM
C. Filters elements
D. Animates elements
Answer: A
Explanation: The .each() method loops through each element in the jQuery object and executes a function.
15. How can you stop the default action of an event?
A. event.preventDefault()
B. event.stop()
C. event.cancel()
D. event.block()
Answer: A
Explanation: Inside an event handler, event.preventDefault() prevents the default behavior of the event.
16. What is the purpose of .ajax() in jQuery?
A. Performs asynchronous HTTP requests
B. Selects elements
C. Handles events
D. Animates elements
Answer: A
Explanation: The $.ajax() method is used for making AJAX calls to send or retrieve data from a server.
17. How do you toggle the visibility of an element?
A. .toggle()
B. .switch()
C. .flip()
D. .changeVisibility()
Answer: A
Explanation: The .toggle() method shows a hidden element and hides a visible one.
18. Which selector is used for child elements?
A. } (e.g., $(‘parent } child’))
B. . (e.g., $(‘parent.child’))
C. , (e.g., $(‘parent, child’))
D. * (e.g., $(‘parent * child’))
Answer: A
Explanation: The } symbol in a selector targets direct child elements of the parent.
19. What does .serialize() do?
A. Encodes form elements for AJAX submission
B. Hides form elements
C. Validates form data
D. Submits the form
Answer: A
Explanation: The .serialize() method creates a URL-encoded string from form elements for use in AJAX.
20. How do you check if an element exists in jQuery?
A. If ($(selector).length } 0)
B. If ($(selector).exists())
C. If ($(selector) != null)
D. If ($(selector).isPresent())
Answer: A
Explanation: The .length property returns the number of elements matched; if greater than 0, the element exists.
or
Part 3: Save time and energy: generate quiz questions with AI technology
Automatically generate questions using AI