Alex MacArthur

Apr 29 '23

Why I Like Using Maps (and WeakMaps) for Handling DOM Nodes

When a JavaScript WeakMap() Actually Came in Handy

6 min read

Oct 5 '21

When a JavaScript WeakMap() Actually Came in Handy

#javascript #ecmascript #weakmap #performance

4 reactions

I think the ergonomics of generators is growing on me.

5 min read

May 12 '25

I think the ergonomics of generators is growing on me.

#javascript #generators #iterables

There are a lot of ways to break up long tasks in JavaScript.

11 min read

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Feb 6 '25

There are a lot of ways to break up long tasks in JavaScript.

#performance #javascript

Using Forced Reflows, the Event Loop, and the Repaint Cycle to Slide Open a Box

10 min read

Jan 6 '25

Using Forced Reflows, the Event Loop, and the Repaint Cycle to Slide Open a Box

#performance #dom #animation

You Might As Well Use a Content Security Policy

7 min read

Dec 3 '24

You Might As Well Use a Content Security Policy

#csp #security #xss

Avoiding a "Host Permission" Review Delay When Publishing a Chrome Extension

7 min read

Dec 3 '24

Avoiding a "Host Permission" Review Delay When Publishing a Chrome Extension

#chrome #chromium #extension

Collect All Requested Images on a Website Using Puppeteer

4 min read

Nov 15 '24

Collect All Requested Images on a Website Using Puppeteer

#puppeteer #images

TIL: inline event handlers still fire when passed to React's dangerouslySetInnerHTML

5 min read

Nov 15 '24

TIL: inline event handlers still fire when passed to React's dangerouslySetInnerHTML

#react #xss #security

Streaming Text Like an LLM with TypeIt (and React)

5 min read

Nov 15 '24

Streaming Text Like an LLM with TypeIt (and React)

#typewriter #animation

I didn't know you could use sibling parameters as default values in functions.

3 min read

Oct 12 '24

I didn't know you could use sibling parameters as default values in functions.

#javascript #functions #parameters #arguments

JamComments Now Offers AI-Powered Moderation

3 min read

Oct 12 '24

JamComments Now Offers AI-Powered Moderation

#ai #blogging

It’s Probably Worth Converting that GIF to an Animated WebP

3 min read

Aug 23 '24

It’s Probably Worth Converting that GIF to an Animated WebP

#webp #gif #performance

Adding Structured Data in Astro's Starlight Documentation Framework

5 min read

May 21 '24

Adding Structured Data in Astro's Starlight Documentation Framework

#comments #documentation #jsonld

The Machines Would Appreciate More Structured Data

4 min read

May 11 '24

The Machines Would Appreciate More Structured Data

#seo #metadata

Looking Forward to (Hopefully) Not Needing Responsive Images One Day

8 min read

Apr 9 '24

Looking Forward to (Hopefully) Not Needing Responsive Images One Day

#performance #html

You Might Consider Using an Image Sitemap

3 min read

Apr 4 '24

You Might Consider Using an Image Sitemap

#seo #sitemap

The Architecture Might Not Be the Problem

6 min read

Mar 14 '24

The Architecture Might Not Be the Problem

#architecture #patterns

Transform Image URLs with a Simple Cloudflare Worker

4 min read

Feb 25 '24

Transform Image URLs with a Simple Cloudflare Worker

#cwv #performance

Maintain a Healthy Sense of Caution Whenever Running a `curl|bash` Command

7 min read

Feb 18 '24

Maintain a Healthy Sense of Caution Whenever Running a `curl|bash` Command

#bash #curl #security

It's never been easier to performantly put images on the web.

5 min read

Feb 9 '24

It's never been easier to performantly put images on the web.

Why Am I Getting a 502 Bad Gateway After Turning on Plausible?

6 min read

Jan 28 '24

Why Am I Getting a 502 Bad Gateway After Turning on Plausible?

#analytics #502

How to Back Up Your Self-Hosted Plausible Analytics Data

2 min read

Jan 28 '24

How to Back Up Your Self-Hosted Plausible Analytics Data

#analytics #backups

3 reactions

Raise the API Rate Limit for a Self-Hosted Instance of Plausible

3 min read

Jan 2 '24

Raise the API Rate Limit for a Self-Hosted Instance of Plausible

#analytics

Let's Bring Back JavaScript's `with()` Statement

3 min read

Let's Bring Back JavaScript's `with()` Statement

#javascript #ecmascript

Server-rendering your UI is expensive!

11 min read

Server-rendering your UI is expensive!

#server #rendering

You should still look at your site with JavaScript disabled.

1 min read

You should still look at your site with JavaScript disabled.

#javascript #performance #cwv

1 min read

Strive for Being "Feature-Complete"

Strive for Being "Feature-Complete"

#software #opensource

There Are a Lot of Ways to Hide Stuff in the Browser

1 min read

Dec 6 '23

There Are a Lot of Ways to Hide Stuff in the Browser

#css #a11y #html

9 min read

Lighthouse is Not Your End User

Lighthouse is Not Your End User

#performance #cwv

Deserializing Polymorphic Lists with Kotlin, Jackson, and Spring Boot

1 min read

Nov 25 '23

Deserializing Polymorphic Lists with Kotlin, Jackson, and Spring Boot

#kotlin #typescript #serialization

Executing Dangerously Injected Scripts Inside React Components

6 min read

Nov 11 '23

Executing Dangerously Injected Scripts Inside React Components

#react #synchronous #xss

For Maximum Accessibility, Be Careful About Using a .dev Domain

6 min read

Oct 30 '23

For Maximum Accessibility, Be Careful About Using a .dev Domain

#tld #domains #dns

Don't Let Visitors Know Your Origin Server Exists

5 min read

Oct 29 '23

Don't Let Visitors Know Your Origin Server Exists

#performance #caching #optimization

PicPerf's Impact on Jane Ross Tutoring's Website

8 min read

Oct 29 '23

PicPerf's Impact on Jane Ross Tutoring's Website

#performance #optimization

TIL: The Download Attribute Doesn’t "Just Work" for Cross-Origin Resources

2 min read

Sep 27 '23

TIL: The Download Attribute Doesn’t "Just Work" for Cross-Origin Resources

#html #downloads #navigation

Get All That Network Activity Under Control with Priority Hints

3 min read

Sep 19 '23

Get All That Network Activity Under Control with Priority Hints

#performance #cwv #hints

Your Cache Headers Could Probably be More Aggressive

9 min read

Sep 11 '23

Your Cache Headers Could Probably be More Aggressive

#performance #caching

Reviewing PicPerf's Impact on SongwriterCity.com

6 min read

Sep 11 '23

Reviewing PicPerf's Impact on SongwriterCity.com

#performance #business #images

Building a Two-Way Data Binding Hook for Form Inputs in React

3 min read

Aug 10 '23

Building a Two-Way Data Binding Hook for Form Inputs in React

#react #javascript #forms #vue

2 comments

5 min read

Taking Variable Fonts for a Spin

Sep 27 '23

Taking Variable Fonts for a Spin

#fonts #performance #ui

5 min read

Run Puppeteer with Docker on Fly.io

Jul 24 '23

Run Puppeteer with Docker on Fly.io

#docker #puppeteer #chrome

How to Better Leverage Browser Preloading

5 min read

Jul 24 '23

How to Better Leverage Browser Preloading

#preloading #performance #javascript

Mount a Multi-Page SPA into an App with Server-Side Routing

7 min read

Jun 2 '23

Mount a Multi-Page SPA into an App with Server-Side Routing

#spa #react #routing #laravel

Why I Moved from Notion to Ghost for My Headless CMS

5 min read

May 26 '23

Why I Moved from Notion to Ghost for My Headless CMS

#blogging #cms

Picking the Right Tool for Maneuvering JavaScript's Event Loop

6 min read

Jun 2 '23

Picking the Right Tool for Maneuvering JavaScript's Event Loop

#javascript

Elegant Memoization with Ruby’s .tap Method

12 min read

Apr 29 '23

Elegant Memoization with Ruby’s .tap Method

#ruby #performance

Options for Navigating JavaScript's Event Loop

5 min read

Apr 10 '23

Options for Navigating JavaScript's Event Loop

If Possible, Don't Run Prism.js in the Browser

12 min read

Apr 10 '23

If Possible, Don't Run Prism.js in the Browser

Consider Animating Your Canvas in a Web Worker

5 min read

Mar 12 '23

Consider Animating Your Canvas in a Web Worker

More Elegant Destructuring with JavaScript Generators

4 min read

Mar 12 '23

More Elegant Destructuring with JavaScript Generators

#javascript

Use a MutationObserver to Handle DOM Nodes that Don’t Exist Yet

3 min read

Feb 21 '23

Use a MutationObserver to Handle DOM Nodes that Don’t Exist Yet

#mutationobserver #polling #javascript

You’ve Got Options for Removing Event Listeners

5 min read

Jan 28 '23

You’ve Got Options for Removing Event Listeners

#javascript #events

Use the .matches() Method to Determine if a Selector Matches an Element

5 min read

Jan 22 '23

Use the .matches() Method to Determine if a Selector Matches an Element

#javascript #html

3 min read

What I Like About Astro

Jan 22 '23

What I Like About Astro

#astro #performance #jamstack

How to Lazy Load Disqus for Improved Site Performance

7 min read

Jan 15 '23

How to Lazy Load Disqus for Improved Site Performance

#performance #blogging

Keep Using Disqus if You Don’t Care About SEO, Performance, and User Privacy

4 min read

Dec 31 '22

Keep Using Disqus if You Don’t Care About SEO, Performance, and User Privacy

#performance #blogging #seo #privacy

When I Actually Needed useLayoutEffect() in React

8 min read

Dec 27 '22

When I Actually Needed useLayoutEffect() in React

#react #performance #hooks

Serving Notion Presigned Images with Cloudflare Workers

5 min read

Dec 13 '22

Serving Notion Presigned Images with Cloudflare Workers

#cloudflare #edge #notion #jamstack

6 reactions

9 min read

I’ve Boarded the SSG Train Again

Oct 7 '22

I’ve Boarded the SSG Train Again

#jamstack #ssg #remix #ssr

Why Can’t You .forEach() Over Empty Array Items?

10 min read

Using Vite to Develop an SPA in the Context of a Production Page

Sep 9 '22

Why Can’t You .forEach() Over Empty Array Items?

#javascript #loop #foreach #iterator

3 reactions

2 comments

3 min read

Sep 8 '22

Using Vite to Develop an SPA in the Context of a Production Page

#vite #spa #proxy