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JQuery vs Javascript: Difference Between JQuery and Javascript

JQuery vs Javascript: Difference Between JQuery and Javascript

Q: 1. Why do you use jQuery instead of JavaScript?

jQuery simplifies JavaScript by providing simpler methods for DOM manipulation, event handling, and AJAX requests while ensuring cross-browser compatibility.

Q: 2. Is jQuery a front-end or back-end?

jQuery is a front-end JavaScript library primarily used for improving UI interactions, animations, and AJAX functionality in web applications.

Q: 3. What is the syntax of jQuery?

The basic syntax of jQuery is $(selector).action();, where $ selects an element, and action() performs an operation on it, such as $("#id").hide();.

Q: 4. What is AJAX used for?

AJAX (Asynchronous JavaScript and XML) is used to send and receive data from a server without reloading the webpage.

Q: 5. Is React better than jQuery?

React is better for building complex, state-driven UI components, while jQuery is suitable for simple DOM manipulations and event handling.

Q: 6. What is HTML() in jQuery?

The html() method in jQuery retrieves or sets the inner HTML content of selected elements, like $("#element").html("<p>New content</p>");.

Q: 7. What is the full form of DOM?

DOM stands for Document Object Model, which represents the structure of an HTML document as a tree that can be manipulated by JavaScript dynamically.

Q: 8. How to use CSS in jQuery?

jQuery’s css() method allows applying styles dynamically, e.g.,$("#element").css("color", "red"); changes the text color to red.

Q: 9. How to replace text in jQuery?

Use the text() method to replace text content, e.g., $("#element").text("New Text"); changes the text inside the selected element.

Q: 10. How to disable JavaScript in jQuery?

JavaScript cannot be disabled using jQuery, but you can stop code execution using event unbinding like $(selector).off("event");.

By Mukesh Kumar

Updated on Mar 04, 2025 | 12 min read

Table of Contents

JavaScript is a scripting language that creates interactive applications like dynamic websites and real-time dashboards. It powers 98.7% of all websites, making it the most widely used programming language.

jQuery is a lightweight JavaScript library that simplifies development by reducing the code needed for common tasks. It is used for building interactive UI components, dynamic content updates, and responsive web applications.

This blog will explore the difference between jQuery and JavaScript, helping you choose the right tool for your project or task.

What is jQuery? Benefits and Limitations

jQuery is a lightweight JavaScript library that simplifies client-side scripting. It provides easy-to-use methods for event handling, DOM manipulation, animations, and AJAX, reducing the amount of code needed compared to pure JavaScript.

jQuery is reliable for web development applications, such as interactive user interfaces, dynamic content updates, dropdown menus, and real-time notifications.

Here’s an example of jQuery code snippet:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>jQuery Example</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <!-- Importing jQuery library -->
    <style>
        #myParagraph {
            font-size: 18px;
            padding: 10px;
            background-color: lightblue;
        }
    </style>
</head>
<body>

    <p id="myParagraph">This is a paragraph that will be shown or hidden when you click the button.</p>
    <button id="toggleButton">Toggle Paragraph</button> <!-- Button to toggle visibility -->

    <script>
        $(document).ready(function() {
            // Ensures the code runs only after the document is fully loaded
            
            $("#toggleButton").click(function() {
                // When the button with id 'toggleButton' is clicked, execute this function
                
                $("#myParagraph").toggle(); 
                // Toggles the visibility of the paragraph with id 'myParagraph'
                // If visible, it hides it; if hidden, it shows it
            });
        });
    </script>

</body>
</html>

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Using jQuery, you can improve web development by streamlining scripting tasks, reducing code complexity, and ensuring compatibility across browsers. Let’s check out the benefits in detail.

Key Benefits of jQuery

Benefits include cross-browser compatibility, built-in animation effects, and a wide range of plugins that enable easy integration of features like sliders.

Here are the key benefits of jQuery.

Simplified DOM Manipulation

jQuery simplifies the process of selecting and modifying HTML elements by using powerful selectors and built-in functions.

Example: $('#content').hide(); hides an element instantly, reducing the need for verbose JavaScript.

Cross-Browser Compatibility

jQuery can handle inconsistencies across different browsers, ensuring seamless functionality in Chrome, Firefox, Edge, and Safari without requiring manual adjustments.

Example: A web application using jQuery can smoothly execute animations, AJAX calls, and event handling without needing additional fallbacks or polyfills.

Built-in Animations & Effects

It offers easy-to-use animation functions like fadeIn(), slideUp(), and animate(), allowing you to create interactive UI elements without relying on CSS animations.

Example: A notification popup on a website can be made to appear using .fadeIn(500) and disappear with .fadeOut(500)

Simplified AJAX Requests

The $.ajax() function streamlines asynchronous calls to fetch and update data without reloading the page, which is useful for chat applications.

Example: A search bar can provide instant suggestions as the user types, getting the results from a server without reloading the page.

Extensive Plugin Support

A vast library of plugins improves jQuery’s capabilities, allowing easy integration of features like modals, sliders, and date pickers.

Example: Integrating the jQuery UI Datepicker requires just a few lines of code. Users can select dates from a pop-up calendar rather than typing manually.

Also Read: 25 Best jQuery Project Ideas for Beginners [2025]

While jQuery offers several advantages, it's also important to consider the challenges that come with using it.

Limitations of jQuery

Using jQuery comes with issues like limited support for modern features, performance overhead, and dependence on additional libraries.

Here are the limitations of jQuery.

Performance Overhead

The abstraction layer makes jQuery slower than vanilla JavaScript, especially for large-scale applications.

Example: A high-traffic e-commerce site with thousands of elements might face slowdowns due to excessive DOM manipulations.

Not Ideal for Large-Scale Applications

Modern front-end frameworks like Vue.js and React provide better component-based architecture for complex applications.

Example: A real-time stock market dashboard suits React’s virtual DOM rather than jQuery’s direct DOM updates.

Limited Native Support for Modern Features

jQuery does not have built-in support for modern JavaScript advancements, such as ES6 modules and reactive data binding.

Example: A single-page application (SPA) that requires dynamic data binding is suitable for Vue.js rather than jQuery.

Dependency on an Additional Library

Projects relying on jQuery can face maintenance challenges and unnecessary file size overhead due to its external nature.

Example: A minimalist blog website that only needs simple event handling can be loaded faster using plain JavaScript instead of adding jQuery.

Declining Relevance in Modern Web Development

With JavaScript evolving and native APIs improving, jQuery has lost its relevance for newer projects.

Example: A progressive web app (PWA) built using modern JavaScript frameworks does not require jQuery for efficiency.

After examining the benefits and limitations of jQuery in modern applications, let’s check the details of JavaScript.

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What is JavaScript? Advantages and Drawbacks

JavaScript is a web programming language used to create dynamic and interactive web pages without additional libraries. It runs directly in browsers for front-end development and is also used in back-end environments like Node.js.

JavaScript can be used to build applications like interactive forms, real-time chat systems, single-page applications (SPAs), and server-side APIs.

Here’s an example of a JavaScript code snippet:

// Wait for the HTML document to fully load before running the script
document.addEventListener("DOMContentLoaded", function () {
    
    // Select the button element by its ID
    let button = document.getElementById("myButton");
    
    // Add a click event listener to the button
    button.addEventListener("click", function () {
        
        // Change the button text when clicked
        button.textContent = "Clicked!";
        
        // Disable the button after clicking to prevent multiple clicks
        button.disabled = true;
    });
});

Also Read: Top 10 Reasons Why You Should Learn JavaScript

JavaScript’s ability to build interactive and fast-loading applications without additional plugins or frameworks makes it a key technology for modern web solutions. Let’s explore the benefits in detail.

Benefits of Using JavaScript

JavaScript enables cross-platform compatibility, extends functionality with libraries, and runs without server interruptions, enhancing efficiency and user experience.

Here are the benefits of using JavaScript.

Client-Side Execution:

JavaScript runs directly in the browser without requiring server communication, reducing latency and enhancing responsiveness.

Example: Real-time form validation using JavaScript’s oninput event provides instant feedback without reloading the page.

Asynchronous Processing with AJAX

JavaScript enables non-blocking data retrieval, allowing updates without reloading the entire page, improving efficiency.

Example: Auto-suggestions in Google Search dynamically fetch results while the user types, making searches faster.

Rich UI & Animations

JavaScript supports dynamic effects and UI interactions through functions like animate(), improving user engagement.

Example: Smooth-scrolling effects, carousel sliders, and collapsible sections enhance navigation in modern websites.

Cross-Platform Compatibility

JavaScript executes uniformly across different browsers and devices, ensuring a seamless experience without extra modifications.

Example: Streaming platforms like Netflix maintain consistent performance across web browsers without requiring separate versions for each device.

Extensive Libraries & Frameworks

JavaScript’s ecosystem includes powerful libraries and frameworks like React, Angular, and Node.js, expanding its capabilities.

Example: React enables fast UI updates in single-page applications (SPAs) like Instagram, improving performance and scalability.

Also Read: Top 10 JavaScript Libraries to Learn

While JavaScript offers numerous advantages, it also comes with certain challenges that developers need to consider.

Limitations of Using JavaScript

JavaScript struggles with performance in heavy applications, security risks like XSS, and limited access to system resources like file handling.

Here are the limitations of using JavaScript.

Security Vulnerabilities
JavaScript code executes on the client-side, making it susceptible to security risks like Cross-Site Scripting (XSS) and data injection attacks.

Example: A poorly secured login form can allow attackers to inject malicious scripts and steal user credentials.

Inconsistent Browser Behavior
JavaScript is interpreted differently by browsers, leading to unexpected errors or UI inconsistencies.

Example: A web application that works smoothly in Chrome may have missing functionalities in older versions of Internet Explorer.

Performance Issues in Heavy Applications
JavaScript is single-threaded, making it struggle with CPU-intensive tasks, causing lag in complex applications.

Example: A complex data visualization dashboard using JavaScript may slow down when processing large datasets in real time.

Limited Access to System Resources
JavaScript has restricted access to system resources like file handling, memory management, or low-level networking.

Example: A browser-based video editor built with JavaScript may have performance constraints compared to a native application like Adobe Premiere Pro.

Dependency on External Libraries
Large-scale JavScript applications rely on libraries like jQuery, React, or Angular, which introduce dependencies and potential vulnerabilities.

Example: A React-based web app may become outdated if an essential package is no longer maintained.

Learn JavaScript fundamentals and gain the skills to create websites from scratch. Join the free course on JavaScript Basics from Scratch now!

With a clear understanding of JavaScript’s strengths and drawbacks, let’s explore the difference between jQuery and JavaScript.

Difference between JQuery and JavaScript: Key Aspects

JavaScript is a programming language that allows you to build web applications, while jQuery is a lightweight library that simplifies tasks like event handling.

Here’s the difference between jQuery and JavaScript.

Parameter	jQuery	JavaScript
Usage	Handling UI interactions, animations, and simplifying AJAX requests.	Building entire web applications, including logic, data handling, and API interactions.
Syntax	Simple and readable syntax that abstracts complex JavaScript operations.	Requires more code for the same tasks but offers more control and flexibility.
DOM Manipulation	Performed using built-in methods like .html(), .css(), and .animate().	Performed using document.getElementById(), querySelector(), and innerHTML, which needs more code.
Performance	Slower execution due to abstraction and additional processing overhead.	Comparatively faster as it runs in the browser without additional abstraction layers.
Event Handling	Uses .on() and .click() to attach events to multiple elements.	Requires addEventListener(), which is more verbose but provides better delegation.
AJAX Handling	Simplifies AJAX with $.ajax(), $.get(), and $.post().	Uses fetch() or XMLHttpRequest(), which offers better control.
Browser Compatability	Automatically handles browser inconsistencies.	Needs manual adjustments for browser differences.
Dependency	Depends on JavaScript and must be included separately in projects.	Standalone and does not require any additional dependencies.

Now that you’ve seen how jQuery vs JavaScript differ in their applications, let’s explore their similarities.

JQuery Vs JavaScript: Understanding Their Similarities

jQuery and JavaScript are similar when it comes to browser compatibility, even handling capability, and integrating with other technolgies like CSS.

Here are the jQuery vs JavaScript similarities.

Client-Side Execution

Both JavaScript and jQuery run on the client side, allowing dynamic interactions without requiring server processing. JavaScript’s execution can be optimized using techniques like lazy loading and code minification.

Example: Form validation can be done instantly in the browser without reloading the page. jQuery may slow down performance compared to JavaScript’s direct handling.

Event Handling

Both support handling user interactions like clicks, keypresses, and form submissions. JavaScript’s event delegation is more efficient, whereas jQuery provides an easier syntax with .on().

Example: Attaching an event listener to a dynamically created element. JavaScript requires document.addEventListener(), while jQuery uses $(document).on().

AJAX Support

Both allow asynchronous requests without page reloads, but JavaScript’s Fetch API gives more control over promises, error handling, and response parsing compared to jQuery’s .ajax().

Example: For fetching live stock market updates, JavaScript’s fetch() with async/await is more modern and flexible, while jQuery’s $.ajax() provides shorthand methods like $.getJSON().

Cross-Browser Compatibility

JavaScript needs polyfills to work consistently across browsers, while jQuery abstracts browser inconsistencies, making it reliable for older versions.

Example: Implementing a drag-and-drop feature consistently across browsers. JavaScript needs extra testing, while jQuery’s .draggable() ensures smoother compatibility.

Integration with Other Technologies

Both JavaScript and jQuery work seamlessly with HTML, CSS, and back-end technologies like Node.js or PHP.

Example: A real-time analytics dashboard uses JavaScript with WebSockets for live updates, while jQuery simplifies DOM updates.

Extensibility via Plugins & Frameworks

JavaScript has powerful libraries like React, Vue, and Angular, while jQuery relies on community-driven plugins for animations and UI enhancements.

Example: A JavaScript-based progressive web app (PWA) using React performs better than a jQuery-based single-page application.

Also Read: Top 25+ JavaScript Frameworks to Learn in 2025 & How to Choose the Right One

Now that you’ve explored the similarities between jQuery vs JavaScript, let’s see how to choose the right one for your needs.

jQuery or JavaScript: Which One Should You Use?

Choosing between jQuery or JavaScript depends on factors like browser compatibility, execution speed, and long-term maintainability. Use jQuery for quick UI fixes, but prefer JavaScript or modern frameworks for scalable applications.

Here are the factors that will help you choose between jQuery and JavaScript.

Performance Needs

JavaScript is suited for large-scale applications requiring high performance and scalability, as jQuery is slow due to its abstraction layer.

Example: A real-time stock trading platform using JavaScript with WebSockets reduces latency, whereas jQuery would add unnecessary overhead.

Ease of Development

jQuery simplifies common JavaScript tasks, like animation, making it ideal for beginners or projects needing quick development.

Example: A simple image slider for a portfolio website can be developed quickly with jQuery animations instead of complex JavaScript.

Cross-Browser Compatibility

jQuery can automatically handle browser inconsistencies, while JavaScript often needs additional polyfills for older browsers.

Example: A corporate intranet application that works on legacy browsers benefits from jQuery, reducing compatibility issues.

Integration with Modern Technologies

JavaScript integrates with frameworks like React, Vue, and Angular, while jQuery does not scale well in modern development stacks.

Example: A progressive web app (PWA) for e-commerce can use JavaScript with React for dynamic UI updates instead of jQuery.

Asynchronous Data Handling & API Calls

JavaScript offers advanced async handling with fetch() and Promises, while jQuery’s $.ajax() is less flexible in handling complex API interactions.

Example: A chatbot retrieving responses from an AI model should use JavaScript’s async/await for efficient API calls instead of jQuery’s AJAX.

Also Read: 55+ Top API Testing Interview Questions to Advance Your Career in 2025

After exploring the factors for choosing between jQuery and JavaScript, let’s look at ways to deepen your knowledge in this field.

How upGrad Helps Advance Your Career?

jQuery and JavaScript are essential for developing scalable and efficient web applications, but they cater to different needs, like small projects or large applications.

To gain expertise in these technologies, upGrad’s web programming courses provide industry-relevant skills and hands-on experience, helping you improve your job prospects.

Here are some courses offered by upGrad in web programming:

Not sure which course is right for you? Book a free one-on-one career counseling with upGrad to shape your career, or visit your nearest upGrad center and start hands-on training today!

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References:
https://www.softwebsolutions.com/resources/backend-javascript-frameworks.html

Frequently Asked Questions

1. Why do you use jQuery instead of JavaScript?

2. Is jQuery a front-end or back-end?

3. What is the syntax of jQuery?

4. What is AJAX used for?

5. Is React better than jQuery?

6. What is HTML() in jQuery?

7. What is the full form of DOM?

8. How to use CSS in jQuery?

9. How to replace text in jQuery?

10. How to disable JavaScript in jQuery?

11. How to call JavaScript from HTML?

Mukesh Kumar

117 articles published

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