EmacsWiki: Category Java Script

Click on the title to list all pages in the javascript category.

Major Modes

Emacs has some major Javascript modes:

JavaScriptMode – js-mode is a bare-bones mode built upon cc-mode. It used to be called espresso-mode at one time, but got folded into the Emacs core
Js2Mode – js2-mode is a full blown IDE style mode, with its own parser.
ECMAScriptMode – another javascript mode, but it’s last update was 2005. You’re likely better off using js-mode
js3-mode is “[a] chimeric fork of js-mode (included with emacs 24) and js2-mode that supports comma-first style and other quirks.”

There are also a number of ways to integrate with javascript subprocesses:

SwankJs, a full-blown SlimeMode backend for node.js and can connect to a running web browser process through the socket.io package. https://github.com/swank-js/swank-js
js-comint.el is a lightweight comint integration package, that also seems to integrate with org-mode nicely.
JavascriptShell A REPL for Windows Scripting Host, and a Lisp:jsshell-bundle.el. It does simple completion on JS objects.
- JavascriptShellServer
WshRepl A decrepit console into the Windows Scripting Host from within Emacs. It does have a project on github, and is looking for a maintainer
ElnodeIJS, NicFerrier having a go at writing an Emacs to JavaScript shell. It uses comet for communication. Currently here and in the Elnode source tree.
jsSlime provides an Emacs interface to the browser’s debugger and javascript engine.

There are a number of helpful modes and elisp packages to working with javascript as well:

FlymakeJavaScript
Ejacs, which is an Ecma-262 compliant Javascript interpreter written IN Emacs lisp
QuickMode? to execute your current JS buffer
emacs.js aims to be a ready-to-use Emacs setup for JavaScript coding

Finally, there are some specific modes available as well:

GwtMuMaMo Multiple Major Mode (MuMaMo) for working with the Google Web Toolkit
CouchdbDocument interacting with couchDB
MozRepl – A great way to hook into the lower level javascript engine of Mozilla.
Flusspferd provides a mode for Emacs.
- no work on the project since 2010
JSON – editing JSON data
TypeScript - minor mode to add syntax highlighting for MS’s Typescript

NPM and Ender package manager front-ends
- emacs.js claims to have npm integration
Lookups to the Javascripture
more cleanup per EmacsWikiContent#javascript
Notes on the pros and cons of using these Emacs w/ these tools vs using another IDE (like Visual Studio or Webstorm). Of course “don’t have to leave Emacs”… but, other reasons? Are there shortcomings we should look to address?