Diving into the World of Web Development: What is jQuery?

jQuery is a popular JavaScript library designed to simplify HTML DOM tree traversal, event handling, and animation among other web-related tasks. According to current industry statistics, it is utilized in nearly 77% of the top 1 million websites. With a notable user base in the IT industry and software development, jQuery has become the go-to tool for web developers looking to enhance the look and feel of their websites. In this extensive glossary, we will discuss various aspects of jQuery, such as its definition, how it works, the benefits, use cases, best practices, and some of the most recommended books on the topic.

“jQuery is not a language, but it is a well written JavaScript code.” – John Resig, Creator of jQuery

What is jQuery? Definition of jQuery Core and jQuery UI

In simple terms, jQuery is a fast, concise, and feature-rich JavaScript library. It was created in 2006 by John Resig with the aim of simplifying the way developers create, interact with, and manipulate web pages. It wraps different functionalities into a single, easy-to-use framework, enabling programmers to write less code while achieving more. jQuery has garnered immense popularity among web developers, making it an essential library in the world of web development.

ℹ️ Synonyms: JavaScript Library, JS Library, JS Framework, JavaScript Framework, Cross Platform JavaScript Library, Open Source JavaScript Library, Feature Rich JavaScript Library, Lightweight JavaScript Library

How it Works

jQuery performs its magic by providing a set of functions that make it easier to manipulate and traverse HTML documents, create animations, handle events, and even perform AJAX calls. jQuery functions are designed to be chainable, meaning the result of one function call can be passed on as input for another function call, leading to a compact and more efficient code. The core of jQuery revolves around the “$” sign or alias, which is the factory function for creating jQuery objects, which then can be used to manipulate or traverse the HTML DOM.

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Benefits of using jQuery

  • Easy to use: jQuery’s syntax is designed to be simple, making it easy to learn and use for web developers. Its chainable functions and shorthand methods allow developers to write clean and concise code.
  • Great documentation: jQuery features comprehensive and well-documented resources that make it easy for developers to find answers to any questions they might have.
  • Cross-browser compatibility: jQuery handles all the cross-browser inconsistencies, enabling developers to focus on building the functionality of their website without worrying about browser compatibility issues.
  • Rich in features: With a wide array of built-in functions, jQuery helps developers achieve complex tasks such as animations, AJAX calls, and DOM manipulation with ease.
  • Vast community: As a widely popular library, jQuery boasts a large community of developers that can provide assistance, contribute plugins, and offer support when needed.

jQuery use cases

jQuery can be used for various web-related tasks, including:

– Navigation menu creation and enhancement
– Slideshow, image gallery, and carousel development
– Form validation and user input handling
– Dynamic content loading using AJAX
– Performing simple to complex animations
– Implementing responsive design elements

In essence, jQuery is a versatile library that is suitable for any web development task, ultimately improving the user experience on a website.

Best Practices

Adopting best practices when using jQuery will ensure optimal performance and efficiency. It is essential to use the latest version of jQuery, as it typically offers performance improvements, bug fixes, and new features. Efficiently handling events, such as avoiding the use of inline JavaScript, using delegated event handlers and making use of event namespacing, is crucial. Additionally, caching frequently used jQuery objects will prevent redundant querying of the DOM, resulting in faster performance. Lastly, using the right selector for your task, minimizing the use of global variables, and adhering to a consistent coding style will lead to a maintainable and well-structured codebase.

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Most recommended books about jQuery

Several books are highly recommended for learning jQuery and enhancing your web development skills:

1. jQuery in Action by Bear Bibeault and Yehuda Katz
2. jQuery Cookbook by Cody Lindley (editor)
3. jQuery Enlightenment by Cody Lindley
4. Learning jQuery, Fourth Edition by Karl Swedberg and Jonathan Chaffer
5. Pro jQuery by Adam Freeman

These books cover a wide range of jQuery concepts, from the basics to more complex topics. They also provide practical examples and tips to help you become a proficient jQuery developer.


In conclusion, jQuery is an indispensable tool in the world of web development, simplifying various tasks for developers by providing an easy-to-use, feature-rich library. Learning and understanding jQuery fundamentals and best practices will offer a strong foundation for creating engaging, interactive, and user-friendly websites. With its countless use cases and benefits, jQuery remains a highly relevant and powerful tool in the rapidly evolving world of technology.

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Back in 2013, I founded Echo with the simple business idea: "Connect great tech companies around the globe with the brightest software engineers in Eastern Europe." We've employed hundreds of talents so far and keep going.
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li-url Lou Reverchuk

IT Entrepreneur

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