JQuery is a lightweight cross-browser JavaScript library designed to “write less, do more” that simplifies programming with JavaScript. jQuery is a popular JavaScript library originally written by John Resig in 2006. As an open source library, it is always being updated and refined by a growing community of contributors. 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. The purpose of jQuery training course is to make it much easier to use JavaScript in web applications. jQuery takes a lot of common tasks that require many lines of JavaScript code to accomplish, and wraps them into methods that you can call with a single line of code. jQuery also simplifies a lot of the complicated things from JavaScript, like AJAX calls and DOM manipulation etc.

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