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JavaScript

Page created: 2023-11-25

Updated: 2026-04-29

My JavaScript: The Good Parts
js-fuzzy-search
JavaScript: Blank line scanning/parsing/lexing by hand vs regex and…
… JavaScript string parsing performance test
Mirroring JavaScript to the screen
js-localstorage
Debouncing JavaScript input
Reading files from JavaScript
Writing files from JavaScript (with data urls)
Line-breaking minified JS source
css-vars (has an explanation of accessing CSS vars from JS)

New for 2024: I also have a demonstration page for Textarea Syntax Highlighting.

I’ve done tons of JavaScript projects. Some highlights:

Hoo?, A Tarot-based journaling game
RetroV, a virtual DOM rendering library
Hiss, a text-based browser game creation editor and "engine" (work in progress!)
Faceclick, an Emoji picker with particular goals

Where do JS prototypes come from?

From ARK (Smith) by way of Self (Smith and Ungar).

screenshot of an ungar slide bullet point reading Warehouse of prototypes instead of global name space of classes

Check out Randall Smith’s ARK system on my microworlds page.

'this' is regretful

I almost never use the this keyword if I can help it. If I do, it’s one line at the beginning of a callback and I get what I need from it and then leave it alone. Never trust this in some deeply nested code somewhere. It will always hurt you when you least expect it.

The Tale of this and the JavaScript developer