Eduraize | jQuery Quiz 1 - Test Your jQuery Knowledge with 25 Interactive Questions

01. What is the correct syntax to include jQuery in your web page?

<script href="jquery.js"></script>

<link rel="stylesheet" src="jquery.js">

<script src="jquery.js"></script>

<script src="jquery.css"></script>

Explanation: The correct syntax to include jQuery is <script src="jquery.js"></script>.

02. What is the purpose of the $(document).ready() function in jQuery?

To execute code immediately as the page starts loading.

To execute code once the DOM is fully loaded.

To load CSS files dynamically.

To initialize JavaScript variables.

Explanation: The $(document).ready() function ensures that the DOM is fully loaded before executing any jQuery code.

03. How do you select an element with the ID "myDiv" in jQuery?

$("#myDiv")

$(".myDiv")

$("#.myDiv")

$(".#myDiv")

Explanation: In jQuery, the "#" symbol is used to select elements by ID.

04. How can you hide an element with jQuery?

$(element).delete();

$(element).remove();

$(element).invisible();

$(element).hide();

Explanation: The .hide() method in jQuery is used to hide an element.

05. How can you attach a click event to a button with ID "myButton" in jQuery?

$("#myButton").click(function() { ... });

$(myButton).onclick(function() { ... });

$(button.myButton).click(function() { ... });

$("#myButton").bindClick(function() { ... });

Explanation: The .click() method is used to attach a click event to the button.

06. Which of the following is the correct way to change the text of an HTML element in jQuery?

$("#element").value("New text");

$("#element").html("New text");

$("#element").innerText("New text");

$("#element").text("New text");

Explanation: The .text() method is used to get or set the text content of an element.

07. Which jQuery method is used to remove an element from the DOM?

$(element).remove();

$(element).detach();

$(element).delete();

$(element).destroy();

Explanation: The .remove() method removes the selected element from the DOM entirely.

08. Which jQuery method is used to apply CSS styles to an element?

$(element).style("property", "value");

$(element).css("property", "value");

$(element).attr("property", "value");

$(element).setStyle("property", "value");

Explanation: The .css() method is used to apply CSS styles to elements in jQuery.

09. What does the jQuery .fadeOut() method do?

Gradually hides an element by decreasing its opacity.

Instantly hides an element by setting its display to "none".

Removes an element from the DOM.

Gradually changes an element's height to 0.

Explanation: The .fadeOut() method gradually decreases the opacity of an element until it becomes invisible.

10. How do you append new content to an element using jQuery?

$(element).add("New content");

$(element).update("New content");

$(element).append("New content");

$(element).addContent("New content");

Explanation: The .append() method adds new content at the end of the selected element.

11. Which jQuery method is used to toggle the visibility of an element?

$(element).toggle();

$(element).switch();

$(element).alternate();

$(element).displayToggle();

Explanation: The .toggle() method is used to toggle between showing and hiding an element.

12. What does the jQuery .val() method do?

Gets or sets the HTML content of elements.

Removes the value of input elements.

Gets or sets the value of input, select, or textarea elements.

Appends a value to an input field.

Explanation: The .val() method is used to get or set the value of form elements like input, select, and textarea.

13. Which jQuery method is used to stop an animation or effect?

$(element).stop();

$(element).halt();

$(element).pause();

$(element).end();

Explanation: The .stop() method is used to stop animations or effects that are running.

14. Which jQuery method is used to get the parent element of a selected element?

$(element).parents();

$(element).getParent();

$(element).parent();

$(element).ancestor();

Explanation: The .parent() method is used to get the direct parent of the selected element.

15. How can you iterate through each element of a jQuery object?

$(element).each(function() { ... });

$(element).forEach(function() { ... });

$(element).loop(function() { ... });

$(element).cycle(function() { ... });

Explanation: The .each() method is used to iterate through each element of a jQuery object.

16. Which jQuery method is used to remove all child elements and content from a selected element?

$(element).detach();

$(element).clear();

$(element).remove();

$(element).empty();

Explanation: The .empty() method removes all child elements and content from the selected element.

17. Which jQuery method is used to get the siblings of a selected element?

$(element).siblings();

$(element).brothers();

$(element).relatives();

$(element).adjacent();

Explanation: The .siblings() method is used to get all sibling elements of the selected element.

18. Which jQuery method is used to bind multiple event handlers to the same element?

$(element).bind();

$(element).on();

$(element).delegate();

$(element).live();

Explanation: The .on() method is used to bind multiple event handlers to an element in jQuery.

19. Which of the following is a correct way to perform an AJAX GET request in jQuery?

$.get("url", function(response) { ... });

$.ajaxGet("url", function(response) { ... });

$.getRequest("url", function(response) { ... });

$.getJSON("url", function(response) { ... });

Explanation: The $.get() method is used to perform a simple AJAX GET request.

20. Which jQuery method is used to trigger an event manually?

$(element).call("eventName");

$(element).fire("eventName");

$(element).emit("eventName");

$(element).trigger("eventName");

Explanation: The .trigger() method is used to manually trigger an event.

21. Which jQuery method is used to retrieve the first element in a collection?

$(element).first();

$(element).start();

$(element).getFirst();

$(element).begin();

Explanation: The .first() method retrieves the first element in a collection.

22. How can you delay an animation in jQuery?

$(element).wait(time);

$(element).delay(time);

$(element).pause(time);

$(element).timeout(time);

Explanation: The .delay() method is used to delay the execution of an animation for a specified time.

23. Which method is used to check whether a specific class is applied to an element?

$(element).checkClass("className");

$(element).containsClass("className");

$(element).hasClass("className");

$(element).verifyClass("className");

Explanation: The .hasClass() method checks whether a specific class is applied to an element.

24. Which method can be used to stop the event bubbling in jQuery?

event.stopPropagation();

event.preventBubble();

event.cancelEvent();

event.haltEvent();

Explanation: The stopPropagation() method prevents event bubbling in the DOM.

25. Which jQuery method is used to wrap an HTML structure around elements?

$(element).insertWrapper(html);

$(element).enclose(html);

$(element).addWrapper(html);

$(element).wrap(html);

Explanation: The .wrap() method wraps an HTML structure around elements.

jQuery Quiz 01

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