Web Design

How To Make A Drag-and-Drop File Uploader With Vue.js 3

March 31, 2022
How To Make A Drag-and-Drop File Uploader With Vue.js 3

What’s different about the file uploader we’re building in this article versus the previous one? The previous drag-and-drop file uploader was built with Vanilla JS and really focused on how to make file uploading and drag-and-drop file selection work, so its feature set was limited. It uploaded the files immediately after you chose them with a simple progress bar and an image thumbnail preview. You can see all of this at this demo.

In addition to using Vue, we’ll be changing the features up: after an image is added, it will not upload immediately. Instead, a thumbnail preview will show up. There will be a button on the top right of the thumbnail that will remove the file from the list in case you didn’t mean to select an image or change your mind about uploading it.

You’ll then click on the “Upload” button to send the image data to the server and each image will display its upload status. To top it all off, I crafted some snazzy styles (I’m no designer, though, so don’t judge too harshly). We won’t be digging into those styles in this tutorial, but they’ll be available for you to copy or sift through yourself in the GitHub Repository — though, if you’re going to copy them, make sure you set up your project to be able to use Stylus styles (or you can set it up to use Sass and change lang to scss for the style blocks and it will work that way). You can also see what we’re building today on the demo page.

Note: I will assume that readers have strong JavaScript knowledge and a good grasp of the Vue features and APIs, especially Vue 3’s composition API, but not necessarily the best ways to use them. This article is to learn how to create a drag-and-drop uploader in the context of a Vue app while discussing good patterns and practices and will not go deep into how to use Vue itself.

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