jQuery Quiz Test

Ready to test your jQuery skills? A quiz is a great way to evaluate your understanding of jQuery concepts and identify areas for improvement.

At The Coding College, we’ve created this jQuery Quiz Test to help you assess your knowledge on topics like selectors, methods, events, and AJAX. Whether you’re a beginner or intermediate learner, this quiz will challenge you!

Quiz Instructions

  1. Read each question carefully.
  2. Select the correct answer(s).
  3. Check the explanation for each question at the end of the quiz.

Section 1: Basic jQuery

1. What is the correct syntax for including the jQuery library in your HTML file?

  • <script src="jquery.js"></script>
  • <script href="jquery.js"></script>
  • <link src="jquery.js">
  • <link href="jquery.js">

2. Which of the following is used to select an element with the ID myDiv?

  • $("div.myDiv")
  • $("div#myDiv")
  • $("#myDiv")
  • $("[#myDiv]")

3. What does $(document).ready() do in jQuery?

  • It waits for the page to fully load, including images and other assets.
  • It initializes the jQuery library.
  • It ensures the DOM is fully loaded before executing any jQuery code.
  • It is an event to detect user clicks.

Section 2: Selectors and Filters

4. Which selector is used to select all elements of a specific class?

  • $("className")
  • $("[class=className]")
  • $(".className")
  • $(":className")

5. How would you select all even list items in an unordered list?

  • $(":ul li:even")
  • $("ul li:even")
  • $("ul:even")
  • $("li:even ul")

Section 3: jQuery Methods

6. What does the hide() method do?

  • It hides an element and removes it from the DOM.
  • It hides an element by setting its display property to none.
  • It hides an element by reducing its opacity to 0.
  • It hides an element permanently.

7. Which jQuery method is used to change the HTML content of an element?

  • val()
  • html()
  • text()
  • content()

8. What is the purpose of the animate() method in jQuery?

  • To hide an element with animation.
  • To apply predefined animations like fade and slide.
  • To perform custom animations by changing CSS properties.
  • To delay the execution of code.

Section 4: Event Handling

9. What does the off() method do in jQuery?

  • Binds an event handler to an element.
  • Removes all event handlers from an element.
  • Disables the default behavior of an event.
  • Triggers an event manually.

10. Which of the following correctly handles a button click event?

  • $("#button").onClick(function() { alert('Clicked'); });
  • $("#button").click(function() { alert('Clicked'); });
  • $("#button").on('click', alert('Clicked'));
  • $("#button").trigger('click');

Section 5: AJAX

11. Which jQuery method is used to send a GET request to the server?

  • $.get()
  • $.ajaxGet()
  • $.post()
  • $.fetch()

12. What does the load() method do in jQuery?

  • Loads a new JavaScript file.
  • Loads data from a server and places it in an element.
  • Reloads the current page.
  • Starts a loading animation.

Section 6: Bonus Question

13. Which of the following statements is true about jQuery?

  • jQuery is a library for JavaScript.
  • jQuery can work without JavaScript.
  • jQuery is faster than plain JavaScript.
  • jQuery doesn’t support AJAX.

Answer Key and Explanations

  1. Answer: <script src="jquery.js"></script>
    Explanation: Use the src attribute to link the jQuery library.
  2. Answer: $("#myDiv")
    Explanation: Use # to select elements by ID in jQuery.
  3. Answer: It ensures the DOM is fully loaded before executing any jQuery code.
    Explanation: The ready() method ensures that jQuery code runs only after the DOM is fully loaded.
  4. Answer: $(".className")
    Explanation: Use . to select elements by class in jQuery.
  5. Answer: $("ul li:even")
    Explanation: Use the :even filter to select even-indexed list items.
  6. Answer: It hides an element by setting its display property to none.
    Explanation: The hide() method changes the display CSS property to none.
  7. Answer: html()
    Explanation: The html() method is used to set or get the HTML content of an element.
  8. Answer: To perform custom animations by changing CSS properties.
    Explanation: The animate() method allows for custom animations by manipulating CSS properties.
  9. Answer: Removes all event handlers from an element.
    Explanation: The off() method unbinds event handlers.
  10. Answer: $("#button").click(function() { alert('Clicked'); });
    Explanation: The click() method is used to attach a click event handler to an element.
  11. Answer: $.get()
    Explanation: The $.get() method sends a GET request to the server.
  12. Answer: Loads data from a server and places it in an element.
    Explanation: The load() method fetches data from a server and inserts it into the selected element.
  13. Answer: jQuery is a library for JavaScript.
    Explanation: jQuery is a lightweight library built on JavaScript.

Conclusion

How did you do on the quiz? If you found areas to improve, explore more tutorials and examples at The Coding College. Keep practicing, and soon you’ll be a jQuery pro! 🚀

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