jQuery Quiz with Certificate: Test Your Skills and Earn Recognition for Jobs

Think you’ve mastered jQuery? Take this advanced quiz to assess your knowledge of event delegation, Deferred objects, custom events, and more. Perfect for experienced developers looking to sharpen their skills.

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jQuery Skill Quiz Exam

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1. How would you use jQuery to efficiently find and remove all duplicate elements within a given set of elements?

a) Use the .unique() method to filter out duplicates.

b) Create a custom function to iterate through the elements and remove duplicates manually.

c) Use the .filter() method with a callback function to identify and remove duplicates.

d) There is no built-in jQuery method for this; you must use native JavaScript.

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2. How can you access the index of the current element within a jQuery .each() loop?

a) Using the this keyword.

b) Using the second argument passed to the callback function.

c) Using the index() method.

d) It's not possible to access the index directly.

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3. How can you check if an element is hidden in jQuery?

a) .isHidden()

b) .is(':hidden')

c) .isVisible()

d) .is(':visible')

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4. Which jQuery method is used to hide selected elements?

a) visible(false)

b) hide()

c) display(none)

d) invisible()

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5. Which jQuery method is used to select the parent of an element?

a) .parent()

b) .parents()

c) .ancestor()

d) .closest()

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6. What jQuery method is used to add a new class to an element?

a) addClass()

b) newClass()

c) appendClass()

d) insertClass()

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7. What is the purpose of jQuery's .data() method?

a) To store arbitrary data associated with an element.

b) To fetch data from a remote server using AJAX.

c) To manipulate the data attributes of an element.

d) To serialize form data into a query string.

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8. What are jQuery promises, and how can they be used to handle asynchronous operations in a more structured way?

a) Promises are objects that represent the eventual result of an asynchronous operation and allow you to chain callbacks for success, failure, and progress updates.

b) Promises are used to create animations with smooth transitions and easing effects.

c) Promises are used to store and retrieve data from the browser's local storage.

d) Promises are used to validate user input in forms before submitting them.

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9. What is the purpose of jQuery's Deferred object?

a) To delay the execution of a function until a specified amount of time has passed.

b) To handle asynchronous operations and provide a way to manage their success or failure.

c) To create a queue of animations that will be executed in sequence.

d) To optimize the performance of event handlers.

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10. What symbol is used as a shortcut for jQuery?

a) $

b) @

c) #

d) &

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11. What is the difference between .serialize() and .serializeArray() methods in jQuery?

a) .serialize() returns a string while .serializeArray() returns an array of objects.

b) .serialize() works on forms while .serializeArray() works on individual form elements.

c) .serialize() includes disabled form elements while .serializeArray() does not.

d) There is no difference; they are interchangeable.

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12. What jQuery method is used to make an AJAX request?

a) getJSON()

b) ajax()

c) load()

d) post()

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13. Which method is used to start an animation?

a) animate()

b) animation()

c) startAnimation()

d) move()

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14. How can you create a deep copy of a jQuery object?

a) $.clone()

b) $.extend(true, {}, originalObject)

c) originalObject.slice()

d) $.copy(originalObject)

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15. How do you remove an element from the DOM using jQuery?

a) delete()

b) empty()

c) remove()

d) clear()

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16. Which jQuery method is used to insert content at the beginning of an element?

a) .append()

b) .appendTo()

c) .prepend()

d) .prependTo()

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17. What is the correct jQuery code to set the CSS text color property of all h1 elements to red?

a) $("h1").css("color", "red");

b) $("h1").style("color", "red");

c) $("h1").attr("color", "red");

d) $("h1").color("red");

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18. How would you select all elements with the class "highlight"?

a) $(".highlight")

b) $("#highlight")

c) $("highlight")

d) $.("highlight")

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19. How do you stop an ongoing animation in jQuery?

a) .stopAnimation()

b) .endAnimation()

c) .stop()

d) .halt()

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20. What is the difference between .empty() and .remove() in jQuery?

a) .empty() removes child elements while .remove() removes the selected element and its descendants.

b) .empty() removes the selected element while .remove() removes child elements.

c) .empty() hides the selected element while .remove() deletes it from the DOM.

d) There is no difference; they do the same thing.

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FAQ of jQuery online free Test

1. How can I effectively prepare for an exam?

Answer: Effective exam preparation involves creating a study schedule, reviewing course material regularly, practicing with past exams or sample questions, seeking clarification from teachers or classmates, and managing stress through relaxation techniques or exercise.

2. What are some strategies for managing exam anxiety?

Answer: To manage exam anxiety, try deep breathing exercises, mindfulness techniques, positive self-talk, visualization, and getting enough sleep. It's also important to be well-prepared and avoid last-minute cramming.

3. How can I improve my time management during an exam?

Answer: Before the exam, familiarize yourself with the format and time allocation for each section. During the exam, quickly scan the entire paper to prioritize questions, allocate time for each question based on its difficulty and point value, and keep an eye on the clock to ensure you stay on track.

4. What should I avoid doing during an exam?

Answer: Avoid cheating, leaving your answers blank, and spending too much time on a single question.

5. When will I get my exam results?

Answer: This is online free jQuery test and you can get result instantly. Yes! You can download certificate instantly.

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FAQ of jQuery online free Test

1. How can I effectively prepare for an exam?

2. What are some strategies for managing exam anxiety?

3. How can I improve my time management during an exam?

4. What should I avoid doing during an exam?

5. When will I get my exam results?

Also check

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