10.1. Introduction
Earth Engine has a User Interface API that allows users to build and publish interactive web apps directly from the JavaScript Code Editor. Users can utilize the ui package to construct a graphical user interface (GUI) for their Earth Engine script. The GUI may include simple widgets (e.g., Labels, Buttons, Checkboxes, Sliders, Textboxes) as well as more complex widgets (e.g., Charts, Maps, Panels) for controlling the GUI layout. A complete list of the ui widgets and more information about Panels can be found at the links below. Once a GUI is constructed, users can publish the App from the JavaScript Code Editor by clicking the Apps button above the script section in the Code Editor.