| Related to web development, hosting, and such: (See also the webdev category)
Dynamic server stuff:
These days, we tend to say JS in general, but ES when referring to a specific version's features. Habits and history...
The most standard form is the ECMA-262 standard, describing ECMAscript.
Things are better these days, but programmers may still want a library to make their life saner.
There are also some formalized extensions, for example:
- TypeScript, a superset that adds annotated static typing
- really a separate language, that is translated to standard JS. Seems intended as a "strongly typed on the server side, can also be served to browsers" thing
- (as an indication how otherwise-similar it is: plain JS is also valid typescript)
- ActionScript in Flash, which is now largely gone
- JScript.NET, a compiled variant of JScript (and will tend to use .NET rather than COM/ActiveX)
Versions (and versions in common browsers)
|This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)|
ECMAscript is versioned like:
- fairly complete wide browser support since 2007ish
- 4 - was a significant redesign of but never happened due to "oh noes might break many sites" worries.
- 5 - in part a cleanup of 3
- fairly compete wide browser support since 2015ish
- 6, later renamed ECMAScript 2015 (a.k.a. 6th Edition, a.k.a. ES6)
- adds various new features - including a good part of the 4-that-never-happened (and e.g. types can be used via TypeScript)
- fairly complete wide browser support since 2017ish
- ECMAScript 2016 (a.k.a. 7th Edition)
- ECMAScript 2017 (a.k.a. 8th Edition)
- ECMAScript 2018 (a.k.a. 9th Edition)
- ECMAScript 2019 (a.k.a. 10th Edition)
- ECMAScript 2020 (a.k.a. 11th Edition)
- ECMAScript 2021 (a.k.a. 12th Edition)
- "JScript Deviations from ES3" (which reports on IE, FF, Opera and Safari)
- http://www-128.ibm.com/developerworks/web/library/wa-ie2mozgd/ (IE/mozilla compatibility notes)