David Walsh Blog

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    cookieStore: Async Cookie API

    One pattern in the JavaScript API world that web development veterans will notice is that we've been creating new methods to accomplish what older, grosser APIs once achieved. XMLHttpRequest became the fetch API, some APIs like Battery became async, and there are dozens of other examples.

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    How to Prevent Pasting into an Input

    Every once in a while I get to a website that doesn't allow me to paste into a form input. In most cases it's something to do with login credentials (username and or password) and auth codes. So how are they preventing me from...

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    Sports Data for Developers: SportdataAPI

    Most of the side projects I consider starting revolve around sports, since I'm a huge sports fan. I spend my Saturdays watching soccer, Sundays spent watching soccer and NFL, and of course the mid-week Champions League and Europa League matches. One problem I've...

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    39 Shirts – Leaving Mozilla

    In 2001 I had just graduated from a small town high school and headed off to a small town college. I found myself in the quaint computer lab where the substandard computers featured two browsers: Internet Explorer and Mozilla. It was this lab where I fell...

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    Curate Custom Content with mediastack

    I used to have a personal aggregator of sites I enjoyed but maintaining it was a nightmare. I needed to grab each site's RSS feed, categorize their contents, deal with errors and individual rate limits, etc. I had to tear the whole project down because it...

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    How to Detect When a Sticky Element Gets Pinned

    The need for position: sticky was around for years before it was implemented natively, and I can boast that I implemented it with JavaScript and scroll events for ages. Eventually we got position: sticky, and it works well from a visual perspective, but I wondered how...

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    Shoelace 2.0: A Forward-thinking Library of Web Components

    A few years ago, I released a lightweight alternative to Bootstrap affectionately named Shoelace. Shoelace was small and fast because of its minimal design and pure CSS approach to styling. It used CSS custom properties extensively to enable customizations, even when loaded via...

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    How to Detect the Default Branch in a git Repository

    Over the past few years, many engineering teams have switched their default git branch name from master to a different, potentially less offensive term. I'm all for choosing to name your default branch whatever you'd like, but not having a universal default branch name can...

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    How to Create an Async Function via “new Function”

    One thing I love about JavaScript is that there are many ways to accomplish the same task, one such example being creating functions. There are several patterns for functions; one of the last you see used is the new Function method:What if you want...

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    Vital Web Performance

    I hate slow websites. They are annoying to use and frustrating to work on. But what does it mean to be “slow”? It used to be waiting for document load. Then waiting for page ready. But with so many asynchronous patterns in use today, how do...

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    39 Shirts – Leaving Mozilla

    In 2001 I had just graduated from a small town high school and headed off to a small town college. I found myself in the quaint computer lab where the substandard computers featured two browsers: Internet Explorer and Mozilla. It was this lab where I fell...

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    Tips for Starting with Bitcoin and Cryptocurrencies

    One of the most rewarding experiences of my life, both financially and logically, has been buying and managing cryptocurrencies like Bitcoin, Litecoin, Ethereum. Like learning any other new tech, I made rookie mistakes along the way, but learned some best practices along the way. Check out...

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    Interview with a Pornhub Web Developer

    Regardless of your stance on pornography, it would be impossible to deny the massive impact the adult website industry has had on pushing the web forward. From pushing the browser's video limits to pushing ads through WebSocket so ad blockers don't detect them, you have...

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    Welcome to My New Office

    My first professional web development was at a small print shop where I sat in a windowless cubical all day. I suffered that boxed in environment for almost five years before I was able to find a remote job where I worked from home. The first...

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    How to Create a RetroPie on Raspberry Pi – Graphical Guide

    Today we get to play amazing games on our super powered game consoles, PCs, VR headsets, and even mobile devices.  While I enjoy playing new games these days, I do long for the retro gaming systems I had when I was a kid: the original Nintendo...

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    Conquering Impostor Syndrome

    Two years ago I documented my struggles with Imposter Syndrome and the response was immense.  I received messages of support and commiseration from new web developers, veteran engineers, and even persons of all experience levels in other professions.  I've even caught myself reading the post...

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    Being a Dev Dad

    I get asked loads of questions every day but I'm always surprised that they're rarely questions about code or even tech -- many of the questions I get are more about non-dev stuff like what my office is like, what software I use, and oftentimes...