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jQuery

jQuery

jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript.

jQuery's syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. jQuery also provides capabilities for developers to create plug-ins on top of the JavaScript library. This enables developers to create abstractions for low-level interaction and animation, advanced effects and high-level, theme-able widgets. The modular approach to the jQuery library allows the creation of powerful dynamic web pages and web applications.

The advantages of using jQuery are:

  • Separates JavaScript and HTML: Instead of using HTML attributes to call JavaScript functions for event handling, jQuery can be used to handle events purely in JavaScript. Thus, the HTML tags and JavaScript can be completely separated.

  • Brevity and Clarity: jQuery promotes brevity and clarity with features like chain-able functions and shorthand function names.

  • Eliminates cross-browser incompatibilities: The JavaScript engines of different browsers differ slightly, so JavaScript code that works for one browser may not work on the other. jQuery handles all these cross-browser inconsistencies and provides a consistent interface that works across different browsers.

  • Extensible: jQuery makes extending the framework very simple. New events, elements and methods can be easily added and then reused as a plugin.