JQuery Online Test

The jQuery Online test uses scenario-based MCQs to evaluate candidates on their knowledge of the jQuery library, including selecting and manipulating DOM elements, event handling, and creating animations and effects. The test aims to evaluate a candidate's ability to work with jQuery effectively and efficiently in web development projects.

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Screen candidates with a 45 mins test

Test duration: ~ 45 mins

Difficulty level: Moderate

Availability: Available as custom test

Questions:

5 jQuery MCQs
5 JavaScript MCQs
1 JavaScript Coding Question

Covered skills:

Selectors

Events

DOM Manipulation

Effects

Animations

AJAX

Forms

Validation

Plugins

Traversal

CSS Manipulation

Attributes

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The JQuery Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Able to efficiently select and manipulate elements using jQuery selectors
Proficient in handling events and event handlers in jQuery
Capable of dynamically manipulating the Document Object Model (DOM) using jQuery
Skilled in applying various effects and animations using jQuery
Experienced in making asynchronous requests and handling responses using AJAX
Knowledgeable in form handling and validation using jQuery
Familiar with utilizing jQuery plugins to enhance functionality
Able to navigate and traverse the DOM using jQuery
Proficient in manipulating CSS properties using jQuery
Capable of getting and setting attributes of HTML elements using jQuery

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These are just a small sample from our library of 15,000+ questions. The actual questions on this JQuery Test will be non-googleable.

🧐 Question
Medium Chaining Event Handlers Chaining Events	Solve
Consider the following HTML and jQuery code: What happens when the "Create Element" button is clicked multiple times? A: Only the first new element created will have a click event handler. B: All new elements will have a click event handler that changes their text color to red. C: Only the last new element created will have a click event handler. D: No new elements will be created, and no click event handlers will be attached. E: New elements will be created, but no click event handlers will be attached.
Medium Traversing and Manipulating DOM Events	Solve
Consider the following HTML and jQuery code: Which of the following statements about this code is true? A: The 'selected' class is only applied to the initial list items when clicked. B: The 'selected' class is only applied to the new list items when clicked. C: The 'selected' class is applied to both the initial and new list items when clicked. D: The 'selected' class is not applied to any list items when clicked. E: The code will throw an error when run.
Medium Async Await Promises Promises Async-Await	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Solve
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Solve
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Solve
What does the following JS code output?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Medium Chaining Event Handlers Chaining Events	2 mins jQuery	Solve
Consider the following HTML and jQuery code: What happens when the "Create Element" button is clicked multiple times? A: Only the first new element created will have a click event handler. B: All new elements will have a click event handler that changes their text color to red. C: Only the last new element created will have a click event handler. D: No new elements will be created, and no click event handlers will be attached. E: New elements will be created, but no click event handlers will be attached.
	Medium Traversing and Manipulating DOM Events	2 mins jQuery	Solve
Consider the following HTML and jQuery code: Which of the following statements about this code is true? A: The 'selected' class is only applied to the initial list items when clicked. B: The 'selected' class is only applied to the new list items when clicked. C: The 'selected' class is applied to both the initial and new list items when clicked. D: The 'selected' class is not applied to any list items when clicked. E: The code will throw an error when run.
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Solve
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Solve
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Solve
What does the following JS code output?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Chaining Event Handlers Chaining Events	jQuery	Medium	2 mins	Solve
Consider the following HTML and jQuery code: What happens when the "Create Element" button is clicked multiple times? A: Only the first new element created will have a click event handler. B: All new elements will have a click event handler that changes their text color to red. C: Only the last new element created will have a click event handler. D: No new elements will be created, and no click event handlers will be attached. E: New elements will be created, but no click event handlers will be attached.
	Traversing and Manipulating DOM Events	jQuery	Medium	2 mins	Solve
Consider the following HTML and jQuery code: Which of the following statements about this code is true? A: The 'selected' class is only applied to the initial list items when clicked. B: The 'selected' class is only applied to the new list items when clicked. C: The 'selected' class is applied to both the initial and new list items when clicked. D: The 'selected' class is not applied to any list items when clicked. E: The code will throw an error when run.
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Solve
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Solve
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Solve
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Solve
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Solve
What does the following JS code output?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Test candidates on core JQuery Hiring Test topics

Selectors: Selectors in jQuery are used to select and manipulate HTML elements. They allow you to target specific elements based on their IDs, classes, attributes, or other characteristics to perform actions on them. This skill is measured in the test to assess the candidate's ability to identify and manipulate specific elements using jQuery selectors.

Events: Events in jQuery are actions or occurrences that happen on a web page, such as a button click or a mouse hover. jQuery provides a convenient way to attach event handlers to these events, allowing developers to write code that responds to user interactions. This skill is measured in the test to evaluate the candidate's understanding of event handling and their ability to write code that responds to user actions.

DOM Manipulation: DOM manipulation in jQuery refers to the ability to dynamically modify the structure and content of a web page. This includes adding, removing, or modifying HTML elements, changing CSS properties, and updating the content of elements. This skill is measured in the test to assess the candidate's capability to manipulate the DOM using jQuery methods and functions.

Effects: Effects in jQuery are animations and transitions that can be applied to web elements. These effects can enhance the visual appeal and interactivity of a webpage. jQuery provides a wide range of built-in effects, such as fading, sliding, and toggling, to create smooth and engaging user experiences. This skill is measured in the test to evaluate the candidate's proficiency in applying effects to elements and creating visually appealing webpages.

Animations: Animations in jQuery involve creating custom animations by manipulating CSS properties over a period of time. This allows developers to bring elements to life with smooth and dynamic movement. jQuery provides intuitive methods and functions to animate elements, making it easier to create interactive and engaging web experiences. This skill is measured in the test to assess the candidate's ability to create and control animations using jQuery.

AJAX: AJAX (Asynchronous JavaScript and XML) is a technique that allows web pages to be updated asynchronously by exchanging data with a web server in the background. jQuery simplifies the process of making AJAX requests and handling the responses, making it a popular choice for implementing dynamic web applications. This skill is measured in the test to evaluate the candidate's understanding of AJAX and their ability to utilize jQuery's AJAX functionalities.

Forms: Forms in jQuery involve working with HTML forms, capturing user inputs, and performing validation and submission actions. jQuery provides powerful form manipulation functions and plugins that simplify the process of handling form elements and validation. This skill is measured in the test to assess the candidate's ability to work with forms and utilize jQuery's form-related functionalities.

Validation: Validation in jQuery refers to the process of checking and validating user inputs in forms to ensure that they meet certain criteria or constraints. jQuery offers various validation plugins and methods that can be used to validate form inputs, display error messages, and control the submission process. This skill is measured in the test to evaluate the candidate's knowledge of form validation techniques using jQuery.

Plugins: Plugins in jQuery are additional libraries or scripts that extend the functionality of jQuery. They can be used to add specific features or behaviors to web pages, such as sliders, carousels, or date pickers. This skill is measured in the test to assess the candidate's awareness and familiarity with popular jQuery plugins and their ability to incorporate and utilize them in web development projects.

Traversal: Traversal in jQuery refers to the ability to navigate and traverse the DOM tree to access and manipulate elements based on their relationships with other elements. jQuery provides a rich set of traversal methods and functions that allow developers to easily select and traverse elements in different directions, such as parent, child, sibling, or descendant elements. This skill is measured in the test to evaluate the candidate's understanding and proficiency in traversing the DOM using jQuery.

CSS Manipulation: CSS manipulation in jQuery involves dynamically changing or applying CSS styles to web elements. jQuery provides methods and functions to modify CSS properties, add or remove CSS classes, and perform other CSS-related operations. This skill is measured in the test to assess the candidate's ability to manipulate and control the appearance of elements using jQuery's CSS manipulation capabilities.

Attributes: Attributes in jQuery refer to the various HTML attributes associated with web elements, such as ID, class, src, href, etc. jQuery allows developers to read and modify these attributes using dedicated methods and functions. This skill is measured in the test to evaluate the candidate's understanding of working with attributes in jQuery and their ability to manipulate and utilize them effectively in web development projects.

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