What is jQuery and why is it used

jQuery is a fast, small, and feature-rich JavaScript library. It simplifies things like HTML document traversal and manipulation, event handling, and animation, making it easier to work with JavaScript in web development. By writing less code, developers can accomplish more, which enhances productivity and promotes a more efficient workflow.

jQuery is widely used because it provides easy-to-use methods and functions that are compatible across different browsers. This reduces the complexity of dealing with browser inconsistencies and improves cross-browser support. Additionally, many plugins are built on jQuery, allowing developers to easily extend its capabilities.

    $(document).ready(function(){
        $('#myButton').click(function(){
            alert('Button clicked!');
        });
    });