Introduction to jQuery — What is jQuery? — Benefits of using jQuery — jQuery vs JavaScript — When to use jQuery Installing jQuery — Adding via CDN — Download and local setup — Verifying jQuery installation Syntax and Selectors — Basic jQuery syntax — ID and class selectors — Attribute selectors — Universal and element selectors jQuery Events — Handling events: click, hover, focus, etc. — Event binding: .on(), .off() — Event delegation — Preventing default behavior DOM Manipulation — Changing text and HTML: .text(), .html() — Adding and removing elements — Adding/removing classes — Changing attributes and styles Effects and Animations — Showing/hiding elements — Fade and slide effects — Custom animations using .animate() — Stopping and chaining animations jQuery and Forms — Getting and setting form values — Form validation — Form submission with .submit() — Dynamic form elements AJAX with jQuery — .load() method — .get() and .post() methods — The $.ajax() method — Handling JSON data Traversing DOM — .parent(), .children(), .siblings() — .find(), .closest(), .next(), .prev() — Filtering selections: .filter(), .not() jQuery Utilities — $.each(), $.map() — $.trim(), $.isArray(), $.type() — Creating custom utility functions jQuery Plugins — What are plugins? — Using a jQuery plugin — Writing a custom jQuery plugin jQuery and JSON — Loading JSON from APIs — Parsing JSON response — Displaying JSON in HTML jQuery Deferred and Promises — What are deferred objects? — Using .done(), .fail(), .always() — Chaining asynchronous operations Performance Optimization — Reducing DOM manipulation — Event delegation best practices — Minimizing selectors jQuery UI — Installing jQuery UI — Widgets (datepicker, dialog, etc.) — Interactions and effects