For my reading list, the various responses to [Wayback/Archive] Julia Evans on Twitter: “is there an easy way (in the browser, at runtime) to generate a call graph of which functions called which other functions in a javascript program?”
--jeroen
Archive for the ‘JavaScript/ECMAScript’ Category
Coo responses to b0rk no Twitter: “is there an easy way (in the browser, at runtime) to generate a call graph of which functions called which other functions in a javascript program?”
Posted by jpluimers on 2025/05/13
Posted in Development, JavaScript/ECMAScript, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »
Exporting Chrome History (with the “new” configuration and state file structure), and Epoch dates on various systems
Posted by jpluimers on 2025/05/02
Quite a while ago, Chrome moved from a structure based on “Current Session“, “Current Tabs“, “Last Session” and “Last Tabs” into “Session_#################” and “Tabs_#################” stored in a “Sessions” folder (and similar migrations for other state and configuration files).
The numbers in the “Session_*” and “Tabs_*” files are time stamps of those sessions, for instance one needs to figure out what the “13310808970819630” in “Session_13310808970819630” and “Session_13310808970819630” means.
Lot’s of web-pages with tips and tricks around the old structures are still around, often surfacing high in Google Search results.
I was interested in a particular trick to export Google Chrome browsing history and had a hard time figuring out the easiest solution.
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Posted in Apple, Batch-Files, Chrome, Chrome, Database Development, Development, Google, JavaScript/ECMAScript, Mac OS X / OS X / MacOS, NirSoft, Polyglot, Power User, Scripting, SQLite, Web Browsers, Windows, Windows 10, Windows 11 | Tagged: define | Leave a Comment »
A signal of the future WebAssembly/emscripten is giving us: a database served on a static web page
Posted by jpluimers on 2025/04/17
From a quite a while back; apparently it ended up in the drafts in stead of the blog queue:
[Wayback/Archive] Ian Miell on Twitter: “A signal of the future WebAssembly/emscripten is giving us: a database served on a static web page: … The possibilities are dizzying. Also, I’ve thought for a while that if I had to put money on it, SQLite will outlast every other database out there.”
The combination of Emscripten and WebAssembly is cool as it allows you to run C/C++ based code in most Web Browsers at near-native speed (though the standard is open and can just as easily outside that realm).
[Wayback/Archive] Hosting SQLite databases on Github Pages – (or any static file hoster) – phiresky’s blog:
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Posted in Assembly Language, Database Development, Development, JavaScript/ECMAScript, Scripting, Software Development, SQLite, Web Development, WebAssembly | Leave a Comment »
From Turbo Pascal to Delphi to C# to TypeScript, an interview with PL legend Anders Hejlsberg – YouTube
Posted by jpluimers on 2025/04/09
Nice historic perspective: [Wayback/Archive] From Turbo Pascal to Delphi to C# to TypeScript, an interview with PL legend Anders Hejlsberg – YouTube
Via [Wayback/Archive] Zack Urlocker on Twitter: “Great interview with @ahejlsberg on the evolution of programming languages, the rise of TypeScript and more. Anders is one of the best programmers I ever worked with. …”
--jeroen
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Posted in .NET, Borland Pascal, C#, Delphi, Development, History, JavaScript/ECMAScript, MS-DOS, Pascal, Scripting, Software Development, Turbo Pascal, TypeScript, Windows Development | Leave a Comment »
Workaround for “embedding” external scripts in JavaScript bookmarklets (thanks @ben_alman).
Posted by jpluimers on 2025/03/25
Bookmarklets are basically URLs that execute a JavaScript function.
Sometimes you want to rely on external JavaScript files (for instance jQuery), but Bookmarklets themselves cannot do that.
Bookmarklets can modify the current page though, and use those to load a script, wait until it is loaded, then continue executing.
Often that is OK as you want to operate the Bookmarklet on that page anyway, but be careful though that you do not mess up the page by loading an incompatible script: test, test, test!
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Posted in Bookmarklet, Development, JavaScript/ECMAScript, jQuery, Power User, Scripting, Software Development, Web Browsers | Leave a Comment »
Need to write bookmarklet for converting RSS feed URL to PlayerFM import feed URL
Posted by jpluimers on 2025/03/11
Target format:
https://player.fm/importer/feed?url=%s
Where %s is the RSS feed for a podcast as URL encoding.
Example:
https://whycast.podcast.audio/@whycast/feed.xml
becomes
https://player.fm/importer/feed?url=https%3A%2F%2Fwhycast.podcast.audio%2F%40whycast%2Ffeed.xml
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Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »
Weather info in plain text or JSON
Posted by jpluimers on 2025/03/06
Two sites that can help you out getting weather info on the console:
- wttr.in: [Wayback/Archive] Weather report: not found
- 7timer: [Wayback/Archive] civil.php (680×770)
wttr.in
wttr.in is developed by [Wayback/Archive] Igor Chubin (@igor_chubin) / X and looks at the request header to figure out what kind of output it sends.
It supports various output formats, so on my TODO list is to see how they do their mapping: always an opportunity to learn (it’s based on Python and Go so I am curious what libraries they use as well).
From the documentation:
wttr.in currently supports five output formats:
- ANSI for the terminal;
- Plain-text for the terminal and scripts;
- HTML for the browser;
- PNG for the graphical viewers;
- JSON for scripts and APIs;
- Prometheus metrics for scripts and APIs.
The ANSI and HTML formats are selected based on the User-Agent string.
There are more parameters in the documentation on the main page of the repository and through this command:
curl wttr.in/:help
The idea is derived from [Wayback/Archive] GitHub – schachmat/wego: weather app for the terminal.
Oh: Igor has more repositories at [Wayback/Archive] chubin (Igor Chubin) · GitHub (including [Wayback/Archive] GitHub – chubin/cheat.sh: the only cheat sheet you need which is hosted at [Wayback/Archive] cheat.sh; I thought I had blogged about that before, but found it only in a draft note mentioning that I got it via [WaybackSave/Archive] Nicolas Krassas on X: “The only cheat sheet you need cheat.sh“)
7timer
A 7 timer JSON usage example is at [Wayback/Archive] Get Weather from 7Timer! · GitHub
It has documentation at
- [Wayback/Archive] 7Timer! – numerical weather forecast for anywhere over the world
- [Wayback/Archive] Wiki · Yeqzids/7timer-issues Wiki · GitHub
- [Wayback/Archive] 7Timer! API — Public APIs
Output formats can be chosen from HTML, PNG, XML and JSON.
Via
[Wayback/Archive] Hacker Public Radio – hpr4266 :: What’s the weather?
Lee writes a script to check what the weather is like ~ The Technology Community Podcast
HPR is a great podcast series!
--jeroen
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Posted in *nix, *nix-tools, ash/dash, bash, bash, Development, Go (golang), JavaScript/ECMAScript, JSON, Power User, Python, Scripting, Software Development, Web Development, XML/XSD | Leave a Comment »
Twitter image size suffixes reloaded: pbs.twimg.com URL information
Posted by jpluimers on 2025/02/18
It’s almost
- 8 years ago since I wrote about Twitter image size suffixes – via: Making silly #latex jokes is much more fun than doing final tweaks in my thesis on #coeffects…
- 2 years ago I wrote about Some experience of htmlpreview.github.io as a replacement for rawgit.com
- a day posting about converting a tweet URL to a Tweet JSON URL in Probably many more like these are needed to download Twitter videos: [extractor/twitter] Fix unauthenticated extraction by bashonly · Pull Request #7476 · yt-dlp/yt-dlp
Goal of the current post amend the above posts with information so I can later write a bookmarklet or web-page with JavaScript that – from a x.com or twitter.com – tweet URL can get the JSON, then the images and/or videos in all sizes, then generate a web-page from it for Wayback Machine archival.
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Posted in Development, HTML, JavaScript/ECMAScript, Scripting, SocialMedia, Software Development, Twitter, Web Development | Tagged: 128, 32392, 7473, 7476, LaTeX | Leave a Comment »
evilsocket/jscythe: Abuse the node.js inspector mechanism in order to force any node.js/electron/v8 based process to execute arbitrary javascript code.
Posted by jpluimers on 2025/02/13
This is based on SIGUSR1, so means you need to run as the same user on the same local system, but it can be used for interesting techniques like extending node.js/electron based applications beyond what they were designed for.
[Wayback/Archive] evilsocket/jscythe: Abuse the node.js inspector mechanism in order to force any node.js/electron/v8 based process to execute arbitrary javascript code.
The behaviour has been documented and was known for a long time: [Wayback/Archive] sigusr1 node.js – Twitter Search.
It got my attention because of [Wayback/Archive] Simone Margaritelli on Twitter: “You can force any v8/Electron process to execute arbitrary js code (child_process, http, etc) by forcefully enabling and abusing the builtin debug mechanism … here’s VS Code executing Calc, but I suspect any Electron app is susceptible 🔥 it works with SIP enabled on macOS”
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Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Tagged: 33188 | Leave a Comment »
A Couple of Quick Bookmarklets For Viewing a Suspended / Deleted Twitter User – ResearchBuzz
Posted by jpluimers on 2025/02/04
For my link archive (I forgot where I found this): [Wayback/Archive] A Couple of Quick Bookmarklets For Viewing a Suspended / Deleted Twitter User – ResearchBuzz
Same for [Wayback/Archive] Bookmarklet for who can see your twitter @reply tweet – By @mhawksey and [Wayback/Archive] Ben Alman » Run jQuery Code Bookmarklet » Generate.
–jeroen
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Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 