Top JQuery Interview Questions & Answers (2025)

📘 What is jQuery?

jQuery is a fast, lightweight, and feature-rich JavaScript library designed to simplify HTML document traversal, event handling, animation, and AJAX interactions.

Introduced in 2006 by John Resig, jQuery became one of the most widely used libraries for client-side scripting in the past two decades.

🧩 Basic jQuery Interview Questions

1. What is jQuery?

Answer:
jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating, and Ajax interactions. It is open-source and cross-browser compatible.

2. How do you include jQuery in a project?

Answer:
You can include jQuery either by downloading it or by using a CDN:

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

3. What is the use of `$(document).ready()`?

Answer:
It ensures the DOM is fully loaded before executing any jQuery code:

$(document).ready(function(){
  // Your code here
});

4. What is the difference between `$(this)` and `this`?

Answer:

this refers to the current DOM element in plain JavaScript.
$(this) wraps the DOM element into a jQuery object, giving access to jQuery methods.

⚙️ Intermediate jQuery Interview Questions

5. What is chaining in jQuery?

Answer:
Chaining allows multiple jQuery methods to be called on the same element in a single line:

$('#element').css('color', 'red').slideUp(1000).slideDown(1000);

6. How do you select elements in jQuery?

Answer:
Using selectors similar to CSS:

$('#id') → selects by ID
$('.class') → selects by class
$('div') → selects all <div> elements

7. How does event delegation work in jQuery?

Answer:
Event delegation allows you to attach an event to a parent element and catch events on child elements that match a selector:

$('#parent').on('click', '.child', function() {
  alert('Child clicked!');
});

8. What is the difference between `.on()` and `.click()`?

Answer:

.click() binds a click event directly.
.on() is more flexible and supports event delegation, multiple events, and dynamically added elements.

🚀 Advanced jQuery Interview Questions

9. What are jQuery AJAX methods?

Answer:
Some commonly used methods:

$.ajax()
$.get()
$.post()
$.getJSON()

Example:

$.get('data.json', function(response) {
  console.log(response);
});

10. How can you prevent default behavior in jQuery?

Answer:

$('a').click(function(e){
  e.preventDefault();
});

11. How do you check if an element exists using jQuery?

Answer:

if ($('#myElement').length > 0) {
  // Exists
}

12. How to iterate over a jQuery collection?

Answer:

$('li').each(function(index, element){
  console.log(index, $(element).text());
});

13. How do you remove an element using jQuery?

Answer:

javascriptCopyEdit$('#myDiv').remove();

🎯 Benefits of Preparing for jQuery Interview Questions

Preparing for jQuery-specific questions helps you:

✅ Understand DOM manipulation more deeply
✅ Gain confidence in legacy and maintenance projects
✅ Stand out in job interviews involving full-stack roles
✅ Improve debugging and optimization skills
✅ Become better at integrating JavaScript libraries

🌐 Integrating Armenian Text to Speech with jQuery

You might wonder how Armenian text to speech fits into this topic. While jQuery isn’t typically used directly for TTS (text-to-speech) functionality, it can simplify UI integration with TTS APIs such as Google Cloud TTS or responsiveVoice.

For example, you could build a simple front-end TTS reader:

$('#speak').click(function() {
  let text = $('#armenianText').val();
  let speech = new SpeechSynthesisUtterance(text);
  speech.lang = 'hy-AM'; // Armenian language code
  window.speechSynthesis.speak(speech);
});

This would allow users to click a button and hear Armenian text spoken aloud, enhancing accessibility.

🧪 jQuery vs Modern Frameworks: Do You Still Need It?

While React, Angular, and Vue dominate modern front-end development, jQuery remains relevant:

Legacy codebases
Lightweight needs without full SPA frameworks
Quick scripts and plugins
Educational purposes to understand JavaScript

🔁 jQuery Method Reference Cheat Sheet

Here’s a quick list of commonly used jQuery methods:

Task	jQuery Method
Select Element	`$('#id')`, `$('.class')`, `$('tag')`
Hide Element	`.hide()`
Show Element	`.show()`
Toggle Element	`.toggle()`
Add Class	`.addClass('name')`
Remove Class	`.removeClass('name')`
Event Binding	`.click()`, `.on()`
Get/Set HTML	`.html()`
Get/Set Text	`.text()`
Get/Set Value	`.val()`
CSS Styling	`.css('property', 'value')`
AJAX Call	`$.ajax()`, `$.get()`, `$.post()`

❓ FAQ Section

Q1: Is jQuery still worth learning in 2025?

Answer:
Yes, especially for maintaining legacy projects or working in companies that rely on existing jQuery-based systems.

Q2: How is jQuery different from JavaScript?

Answer:
jQuery is built on top of JavaScript. It simplifies common tasks like DOM manipulation, AJAX calls, and event handling with less code.

Q3: Can jQuery be used with React or Angular?

Answer:
Technically yes, but it’s not recommended. Modern frameworks have their own state and DOM management. Mixing jQuery may lead to performance or maintenance issues.

🏁 Final Thoughts

While jQuery may not be the hot new tech, it’s still an important skill in many job markets. Many interviewers expect you to have a solid understanding of DOM, AJAX, and event handling, which jQuery simplifies.

By reviewing these jQuery interview questions and answers, you’ll be better prepared to impress hiring managers and handle legacy or hybrid applications with ease.

Would you like a downloadable cheat sheet version of this guide? Let me know!

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