jQuery Debugger is a Chrome Developer Tools extension that is designed to enhance the development experience for jQuery developers. With its new Selector Inspector panel, developers can easily inspect their jQuery selectors and see the matching elements displayed on any website. This feature is especially useful for understanding complex selectors and improving the accuracy of selector targeting.

In addition to the Selector Inspector panel, jQuery Debugger also introduces two new sidebars on the Elements panel. The jQuery Data sidebar displays the jQuery and HTML5 data of the selected element, providing developers with valuable information about the data associated with elements. The jQuery Events sidebar shows the event handlers of the selected element, including events that are live or delegated on other elements that have an impact on the selected element.

Overall, jQuery Debugger is a valuable tool for jQuery developers who want to streamline their development process and gain deeper insights into their code. Its intuitive interface and powerful features make it a must-have extension for anyone working with jQuery.