drop() is a p5.js element method that registers a callback every time a file is loaded into the element. The uploaded file is created into a p5.File class. You can use the drop() callback to check the file type, then write conditional statements responding to the file type.
関連する実例
A grey background with white text reading "Drag an image file onto the canvas."
Image Drop
Display an image that the page visitor dragged and dropped.
An input field with a submit button, labeled "Hello, p5!"
Input and Button
Use text input from the page visitor.
A survey on a yellow background, consisting of an input field, radio buttons, and a dropdown.
Form Elements
Create a form and respond to the results.