What is the difference between jQuery and JavaScript?

Both JavaScript and jQuery serve the same overarching objective of making webpages more interactive and dynamic. They give websites a sense of vibrancy. People may ask why there is a need for two distinct concepts if they serve the same function. Read through this article to find out how jQuery differs from JavaScript.

What is JavaScript?

JavaScript is a lightweight programming language that is used most often as a component of webpages. Its webpage implementations enable client-side script to interact with the user and create dynamic sites. It is a programming language that is interpreted and can handle object-oriented functionality.

• JavaScript is interpreted and therefore it is very lightweight.

• It was designed for developing network-focused applications.

• It complements and is fully integrated with HTML.

• It is free to use on several operating systems.

Key Features of JavaScript

JavaScript is primarily used for creating interactive webpages. Its main applications include:

• Client-side validation

• Dynamic drop-down menus

• Displaying date and time

• Showing dialog boxes (alert, confirm, prompt)

• Interactive elements like clocks and counters

Example

Here's a simple JavaScript example:

<script>
    document.write("This text is written by JavaScript");
</script>

What is jQuery?

jQuery is a JavaScript library that was developed in 2006 by John Resig. Known for its speed and brevity, jQuery makes it easier to navigate HTML pages, handle events, use animations, and interact with Ajax, which makes it faster to build websites.

jQuery is an efficient, lightweight, and compact JavaScript library. It is compatible with several operating systems and browsers, making it cross-platform. It is also known as "write less, do more" because it takes many common tasks that normally require multiple lines of JavaScript code and accomplishes them with fewer lines.

Features of jQuery

Here are some important features of jQuery:

• DOM Manipulation ? Using a cross-browser open source selection engine called Sizzle, jQuery makes it simple to select DOM elements, navigate them, and modify their content.

• Event Handling ? jQuery provides an easy method for capturing events, such as user clicks, without cluttering HTML code with event handlers.

• Cross-Browser Support ? jQuery works well on Internet Explorer 6.0+, Firefox 2.0+, Safari 3.0+, Chrome, and Opera 9.0+.

• Compatibility ? jQuery is compatible with CSS3 selectors and basic XPath syntax.

Besides these, jQuery provides features such as HTML modification, DOM manipulation, CSS modification effects, animations, AJAX support, JSON parsing, and extensibility through plugins.

Using jQuery

There are two approaches to using jQuery:

• Local Installation ? Download the jQuery library and include it in your HTML code.

• CDN Installation ? Include the jQuery library directly from a Content Delivery Network (CDN).

Example

Here is a sample jQuery example:

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
    $(document).ready(function() {
        document.write("This text is written by jQuery");
    });
</script>

Difference between jQuery and JavaScript

The following table highlights the major differences between jQuery and JavaScript:

Conclusion

JavaScript is a programming language used for web development, while jQuery is a library built on top of JavaScript. jQuery simplifies common JavaScript tasks and provides better cross-browser compatibility, making it easier for developers to create interactive websites with less code.