2024-08-14
4030
#html
Glad Chinda
1855
Aug 14, 2024 â‹… 14 min read

Programmatically downloading files in the browser

Glad Chinda Full-stack web developer learning new hacks one day at a time. Web technology enthusiast. Hacking stuffs @theflutterwave.

Recent posts:

7 Common CSS Navigation Menu Mistakes And How To Fix Them

7 common CSS navigation menu mistakes and how to fix them

Navigation menu errors are common, even for seasoned developers. Learn seven common navigation menu errors and how to solve them using CSS.

Temitope Oyedele
Jun 13, 2025 â‹… 6 min read
Comparing the top 5 React toast libraries

Comparing the top React toast libraries [2025 update]

Compare the top React toast libraries for when it’s more trouble than it’s worth to create your own custom toast components.

Nefe Emadamerho-Atori
Jun 13, 2025 â‹… 16 min read
Comparison between TanStack Start and Next.js — two modern full-stack React frameworks with different architectural approaches.

TanStack Start vs. Next.js: Choosing the right full-stack React framework

TanStack Start vs. Next.js: both are powerful full-stack React frameworks, but they take fundamentally different approaches to architecture, routing, and developer experience. This guide breaks down their core features from SSR and data fetching to TypeScript support and deployment, to help you choose the right tool for your next React project.

Abiola Farounbi
Jun 12, 2025 â‹… 8 min read
Angular v20 might seem boring…here are 5 reasons it’s not

Angular v20 might seem boring — Here are 6 reasons it’s not

While it may seem like a maintenance update, Angular v20 is packed with practical, production-ready upgrades that will enable us to build apps faster and with more confidence.

Yan Sun
Jun 12, 2025 â‹… 8 min read
View all posts

5 Replies to "Programmatically downloading files in the browser"

  1. Hello. Great article! One comment though: in the function `downloadBlob` you declare a `clickHandler` that gets a value of an arrow function, which uses the `this` keyword. Since arrow functions do not have `this`, and you use `this` in a `setTimeout` callback function — it ends up being `undefined`, which throws when you perform the `.` operator on it (to call the `removeEventListener` method).
    Thanks for the article!
    Eran

  2. Hi Eran, thanks for pointing that out. That was an error on my part.

    The `clickHandler` function is supposed to be a regular JS function as opposed to an arrow function — that way, it would have the correct `this` binding internally (the target element) when it is eventually used as an event listener callback. If you notice in the subsequent Codepen snippets, you’d observe that the `clickHandler` function was defined as a regular function instead of as an arrow function.

    Thanks again for spotting that out.

Leave a Reply