2022-03-11
5974
#react
Uzochukwu Eddie Odozi
19734
Mar 11, 2022 â‹… 21 min read

Build a drag-and-drop image uploader with react-dropzone

Uzochukwu Eddie Odozi Web and mobile app developer. TypeScript and JavaScript enthusiast. Lover of Pro Evolution Soccer (PES).

Recent posts:

Why Go wasn’t the right choice for the TypeScript compiler

Why Go wasn’t the right choice for the TypeScript compiler

The switch to Go may be a pragmatic move in the short term, but it risks alienating the very developers who built the tools that made TypeScript indispensable in the first place.

Muhammed Ali
May 8, 2025 â‹… 4 min read

How to format dates in JavaScript: Methods, libraries, and best practices

JavaScript date handling can be tough. Here are some native Date API tools and specialized libraries to tackle them with.

Nelson Michael
May 8, 2025 â‹… 8 min read
tailwind typography

How to use the Tailwind Typography plugin

Walk you through how to set up and use the Tailwind Typography plugin, also known as the @tailwindcss/typography or the prose plugin.

David Omotayo
May 7, 2025 â‹… 7 min read
Running TypeScript In Node.js: Tsx Vs. Ts-node Vs. Native

Running TypeScript in Node.js: tsx vs. ts-node vs. native

TypeScript adds static typing to JavaScript code, which helps reduce unpredictable behavior and bugs. In the past, TypeScript code couldn’t […]

Amazing Enyichi Agu
May 7, 2025 â‹… 8 min read
View all posts

8 Replies to "Build a drag-and-drop image uploader with react-dropzone"

  1. Amazing Tutorial. I learned a lot. I actually extended it to upload csv files and adding rows to my table on each file drop. One issue I see in the code which I am trying to fix is that if you drop same file multiple times, it doesn’t display it in the list which is good but it keeps it somewhere in validFiles list and therefore if you delete that file from UI, another version of that file will appear because you tried to dropped it multiple times.

    If you know its fix, please do share with me. Thanks a lot for writing such a detailed tutorial.

  2. const handleFiles = (files) => {
    for (let i = 0; i item.name === files[i].name)
    if (!x) { same as now

  3. hello, very good tutorial,
    but if I want to upload pdf files instead of images, what would be the validation function?
    Thanks!

Leave a Reply