In this episode, we're wrapping up our upload section by adding drag-and-drop support for files! Right now, if you try to drag a file onto our upload area, it just opens the file in the browser, which obviously isn't what we want. So, we'll fix that and make the experience much smoother.
First, we dive into handling the important drag and drop events: dragover
, dragleave
, and drop
. We set up booleans that let us change the look of the upload area when a file is hovering over it, so users get some nice visual feedback. You'll see how to toggle a different background or border color just when you're dragging files onto it!
Then, we wire up the actual logic for dropping files in. There’s a little quirk here: files from a drop event are accessed differently compared to the usual file input, so we tweak our code to handle that using dataTransfer.files
. We also make sure the default browser behavior doesn't sneak in and ruin the party by using preventDefault()
in the right places.
After testing a few times—dragging single and multiple files to make sure everything works—we clean up any last UI quirks so dropping files feels super smooth. Now users can either click the upload area or drag files onto it, making your file uploading experience a lot more flexible and user-friendly.