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. 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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2. 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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3. Which jQuery method is used to change the text content of an element?

a) .text()

b) .html()

c) .val()

d) .content()

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

a) getJSON()

b) ajax()

c) load()

d) post()

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5. Explain the difference between .detach() and .remove() in jQuery, and when you might choose one over the other.

a) .detach() removes an element from the DOM but keeps its data and event handlers, while .remove() completely removes the element and its associated data.

b) .detach() removes the element's data but keeps it in the DOM, while .remove() only removes the element from the DOM.

c) .detach() is faster than .remove() because it doesn't remove event handlers.

d) .detach() is used for hiding elements temporarily, while .remove() is used for permanent removal.

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6. 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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7. What does the jQuery method .each() do?

a) Iterates over a set of matched elements and executes a function for each one.

b) Creates a new jQuery object with all matched elements.

c) Attaches a click event handler to each matched element.

d) Filters the set of matched elements based on a given condition.

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

a) .parent()

b) .parents()

c) .ancestor()

d) .closest()

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

a) $(".highlight")

b) $("#highlight")

c) $("highlight")

d) $.("highlight")

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11. 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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12. What is the purpose of jQuery's .proxy() method?

a) To create a proxy server for making AJAX requests.

b) To ensure that a function is always executed in the context of a specific object.

c) To provide a way to cache the results of expensive function calls.

d) To handle cross-domain AJAX requests.

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13. 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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14. 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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15. 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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16. How would you create a custom jQuery animation that smoothly transitions an element's opacity from 0 to 1 over a duration of 500 milliseconds?

a) $("#myElement").animate({ opacity: 1 }, 500);

b) $("#myElement").fadeIn(500);

c) $("#myElement").transition({ opacity: 1 }, 500);

d) $("#myElement").show(500);

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17. Which method is used to start an animation?

a) animate()

b) animation()

c) startAnimation()

d) move()

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18. Which jQuery method is used to get the value of an input field?

a) .text()

b) .html()

c) .val()

d) .value()

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19. 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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20. Which jQuery method is used to hide selected elements?

a) visible(false)

b) hide()

c) display(none)

d) invisible()

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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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Insert Correct Full Name and Valid Email ID

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

Quiz Ranker