The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘JavaScript/ECMAScript’ Category

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Every time I try, I’m reminded of: You Don’ t Know JavaScript

Posted by jpluimers on 2019/09/05

I forgot how I originally bumped into the book series, but every time I try to program in JavaScript I’m reminded of them: You Don’ t Know JavaScript.

Originally a KickStarter project, they are now on GitHub and there is a Twitter account irregularly posting about them:

Titles

–jeroen

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Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

… compare two JSON structures and pin-point … the differences – – Nicholas Ring – Google+

Posted by jpluimers on 2019/08/20

I’ve added a few WayBack/Archive.is links to the interesting comments by Zoë Peterson from Scooter Software (of Beyond Compare fame) at [WayBack] … compare two JSON structures and pin-point … the differences – – Nicholas Ring – Google+:

Beyond Compare 4 has an optional “JSON sorted” file format that uses jq to pretty print and sort JSON data before comparing it. It’s not included out of the box yet, but you can get a copy here:

If you’re interested in an actual algorithm and not just an app, I don’t have a suggestion handy, but could dig one up. Tree alignment is more complicated than sequence alignment and we did do research into it, but it was quite a few years ago and didn’t get incorporated into BC. XML alignment algorithms were being actively researched back in the aughts and they should trivially transfer to JSON.
…

It looks like our research mostly ended around 2002, and I wasn’t personally involved in it, so I don’t know how helpful this will be, but here’s what I have:

The general idea in the thread is that JSON – though not as formalised as XML – does have structure, so if you can normalise it, then XML ways of differencing should work.

Normalisation also means that you need to normalise any floating point, date time, escaping, quoting, etc. Maybe not for the faint of heart.

–jeroen

Posted in *nix, *nix-tools, Beyond Compare, Development, diff, JavaScript/ECMAScript, jq, JSON, Power User, Scripting, Software Development, XML, XML/XSD | Leave a Comment »

The 14 JavaScript debugging tips you probably didn’t know | Raygun

Posted by jpluimers on 2019/08/08

For my link archive: [WayBack] The 14 JavaScript debugging tips you probably didn’t know | Raygun

–jeroen

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

Convert cURL command syntax to Python requests, Node.js code

Posted by jpluimers on 2019/07/26

Utility for converting curl commands to code

For my link archive: [WayBack] Convert cURL command syntax to Python requests, Node.js code

–jeroen

Posted in *nix, *nix-tools, cURL, Development, JavaScript/ECMAScript, Node.js, Power User, Python, Scripting, Software Development | Leave a Comment »

Tech Notes: TypeScript at Google

Posted by jpluimers on 2019/07/11

For my link archive: [WayBack] Tech Notes: TypeScript at Google.

A good discussion, also about alternatives (like Kotin, Scala, GTW) is at [WayBack] TypeScript at Google | Hacker News

Via [WayBack] TypeScript at Google https://news.ycombinator.com/item?id=17894764 #typescript #google #microsoft #javascript – Adrian Marius Popa – Google+

–jeroen

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development, TypeScript | Leave a Comment »

Web Audio Modem

Posted by jpluimers on 2019/07/04

Geekpr0n: [WayBack] Web Audio Modem

What do you do when you cannot copy text between computers due to lack of internet connectivity? I built a modem using the Web Audio API, allowing data transfer via audio.

It is on github at martme/webaudio-modem: Encode and decode text using the Web Audio API to enable offline data transfer between devices.

There are three demo pages at [WayBack] martinmelhus.com – Web Audio Encoder too:

–jeroen

Via:

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Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

JS developers discover the char code for space is the same ASCII code for all browsers.

Posted by jpluimers on 2019/07/03

Somewhere in 2013, JavaScript developers found out the char code for space is the same ASCII code for all browsers at [WayBack] Javascript Char Codes (Key Codes) – Cambia Research

An interactive javascript key code reference for javascript developers. Includes an interative text box where you can type a key and see it’s code along with a complete lookup table.

This contrary to EBCDIC, where space can be character code 40 and 41, but not at the same time (by [WayBack] Armin Kunaschik at[WayBack] Oh mein Gott – Kristian Köhntopp – Google+).

Via

–jeroen

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Posted in Development, Fun, JavaScript/ECMAScript, Scripting, Software Development | Leave a Comment »

On the Effectiveness of Static Typing in Detecting Public Bugs

Posted by jpluimers on 2019/05/14

Cool research paper from a while back but still soo relevant:

The project page for an ICSE’17 paper, To Type or Not to Type: Quantifying Detectable Bugs for JavaScript

JavaScript is also a dynamically typed language for which static type systems, notably Facebook’s Flow and Microsoft’s TypeScript, have been written. What benefits do these static type systems provide?

Source: [Archive.is] On the Effectiveness of Static Typing in Detecting Public Bugs

 

Other saved links:

–jeroen

via: [WayBack/Archive.is] Slashdot drew my attention to this ressearch … http://ttendency.cs.ucl.ac.uk/projects/type_study/ An argument for languages like Delphi. – Roland Kossow – Google+

Posted in Development, JavaScript/ECMAScript, Scripting, Software Development, TypeScript | Leave a Comment »

Some links and notes as I want to learn about JavaScript in bookmarklets

Posted by jpluimers on 2019/04/11

I wrote about bookmarklets before, but more from a usage perspective, not from a programmers one.

From what I understand now is that:

  • bookmarklets are basically a special form of URI
    • you can use JavaScript in them, but must make sure you do not interfere with existing JavaScript on the page
    • javascript:(function(){ window.open('https://wiert.me/'); })();
  • the URI has limits so,
    • browsers can have length restrictions (some around 500 characters) forcing you to put the actual script on-line as externalised bookmarklet (which won’t work on body-less pages)
    • you will have to encode special characters (and URI decode them before beautifying existing JavaScript bookmarklets)

My first tries will likely be:

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Posted in Bookmarklet, Development, JavaScript/ECMAScript, jQuery, Power User, Scripting, Software Development, Web Browsers | Leave a Comment »

debugging – Find what javascript changes the DOM? – Stack Overflow

Posted by jpluimers on 2019/04/01

I know I’m going to need this one day: [WayBack] debugging – Find what javascript changes the DOM? – Stack Overflow

Via: [WayBack] Javascript “Why”: Wenn ich eine fertig geladene Webseite sehe und wissen möchte, warum “dieses Element da” (Bild, Script, div) geladen worden ist, wie… – Kristian Köhntopp – Google+

–jeroen

Posted in Chrome, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »

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