The StickyNotesApp.js script is designed for a web-based sticky notes application. It facilitates the creation, editing, and management of text notes on a virtual notes wall. Key functionalities include handling user interactions such as double-clicks for editing notes, shifting to move onto the next line in a single note, and hovering over the top right of each note to delete a note in the “trash can”. The script dynamically updates note content and the display on the notes wall to ensure a responsive and interactive user experience. The focus is on creating a user-friendly interface that allows for efficient and intuitive management of sticky notes in a digital format.