=== Variant 2 ===
You can do
$ npm -g install jshint
and then install flymake-jshint using marmalade (http://marmalade-repo.org/). You may need to do the following in /usr/local/bin:
ln -s /usr/local/Cellar/node/0.6.6/lib/node_modules/csslint/cli.js
and then put (add-to-list 'exec-path "/usr/local/bin") somwhere in your .emacs.
-Dave Dreisigmeyer
== With JSLint on Rhino ==
First, you will need to install Rhino, and download jslint.js for Rhino [https://developer.mozilla.org/en-US/docs/Rhino]. I've got it located in ~/soft/jslint, and you will want to update the code below to match where you've put it.
Next you will want to create a file called flymake-jslint.el on your LoadPath like the following
(require 'flymake)
(defun flymake-jslint-init ()
(let* ((temp-file (flymake-init-create-temp-buffer-copy
'flymake-create-temp-inplace))
(local-file (file-relative-name
temp-file
(file-name-directory buffer-file-name))))
(list "rhino" (list (expand-file-name "~/soft/jslint/jslint.js") local-file))))
(setq flymake-allowed-file-name-masks
(cons '(".+\\.js$"
flymake-jslint-init
flymake-simple-cleanup
flymake-get-real-file-name)
flymake-allowed-file-name-masks))
(setq flymake-err-line-patterns
(cons '("^Lint at line \\([[:digit:]]+\\) character \\([[:digit:]]+\\): \\(.+\\)$"
nil 1 2 3)
flymake-err-line-patterns))
(provide 'flymake-jslint)
and import it from your DotEmacs like so:
(require 'flymake-jslint)
(add-hook 'js-mode-hook
(lambda () (flymake-mode t)))
You can control options of JSLint by using special comments in your source code which are described in the documentation [http://www.jslint.com/lint.html]. For example, the following is the same as using the recommended options on jslint.com, and also the assume a browser option. It also defines the name !MochiKit, which is imported elsewhere.
/*jslint browser: true, undef: true, eqeqeq: true, nomen: true, white: true */
/*global MochiKit */
[new]
Seems like you really want (flymake-mode 1) in that hook, not (flymake-mode t). According to the documentation, to turn on the minor mode explicitly requires that the arg be *positive*, not non-nil. --DinoChiesa
== With JSLint server on Node.js (lintnode) ==
If you run the above in a persistent server on v8 instead of invoking rhino every time, it goes about twice as fast. Server code with instructions is available at http://github.com/keturn/lintnode
== With SpiderMonkey ==
JavaScript syntax checking using spidermonkey. This also detects object trailing comma like:
var obj = {
a: 1,
b: 2,
}; // this line is highlighted.
You'll need Karl's [[JavaScriptMode]], spidermonkey 1.5 or greater and emacs 22.
(defconst flymake-allowed-js-file-name-masks '(("\\.json$" flymake-js-init)
("\\.js$" flymake-js-init)))
(defcustom flymake-js-detect-trailing-comma t nil :type 'boolean)
(defvar flymake-js-err-line-patterns '(("^\\(.+\\)\:\\([0-9]+\\)\: \\(SyntaxError\:.+\\)\:$" 1 2 nil 3)))
(when flymake-js-detect-trailing-comma
(setq flymake-js-err-line-patterns (append flymake-js-err-line-patterns
'(("^\\(.+\\)\:\\([0-9]+\\)\: \\(strict warning: trailing comma.+\\)\:$" 1 2 nil 3)))))
(defun flymake-js-init ()
(let* ((temp-file (flymake-init-create-temp-buffer-copy
'flymake-create-temp-inplace))
(local-file (file-relative-name
temp-file
(file-name-directory buffer-file-name))))
(list "js" (list "-s" local-file))))
(defun flymake-js-load ()
(interactive)
(defadvice flymake-post-syntax-check (before flymake-force-check-was-interrupted)
(setq flymake-check-was-interrupted t))
(ad-activate 'flymake-post-syntax-check)
(setq flymake-allowed-file-name-masks (append flymake-allowed-file-name-masks flymake-allowed-js-file-name-masks))
(setq flymake-err-line-patterns flymake-js-err-line-patterns)
(flymake-mode t))
(add-hook 'javascript-mode-hook '(lambda () (flymake-js-load)))
== With Rhino ==
There's another implementation of [http://code.google.com/p/flymake-js/ Flymake JavaScript mode] that sits on top of the Rhino engine.
[new]
I have some problems with this one. I assume it is a problem with the path to rhino.js and env.js, but I am not sure. I have placed those file in the folder %%c:/emacs/rhino-related/%% which I mention in rhino.js (see below, is this correct?):
// Where you store your files
var project_folder = 'c:/emacs/rhino-related/';
// Browser environment wrapper over Rhino
load(project_folder + 'env.js');
// For DOM constructing
window.location = project_folder + 'blank.html';
var my_script = arguments[0];
// If DOM ready
window.onload = function(){
// Avoid recursive inclusion
if ("rhino_flymake.js" != my_script) {
load(my_script);
}
}
I get strange errors, like:
parsed 'Exception in thread "Thread-0" org.mozilla.javascript.WrappedException:
Wrapped java.net.MalformedURLException: unknown protocol: c',
no line-err-info
It looks like Rhino can not take care of the c: in the path. Anyone who understands what is happening?
-- LennartBorgman
[new]
I do not have a Windows box to verify the fix below, but according to some forum posts, you should declare the path in scheme file:///C:/path/to/file.
var project_folder = 'file:///c:/emacs/rhino-related/';
-- Nyuhuhuu
[new]
Thanks Nyuhuhuu, that made it work on Windows.
[new]
Before I fixed the issue you speak of, I had to fix an apparent problem with 'compilation-error-regexp-alist-alist' in 'flymake.el'. For details on that, please see [http://groups.google.com/group/gnu.emacs.help/browse_thread/thread/0cd12cf6b61e7923#d734eb7aedf67971 this post] on gnu.emacs.help.
After that was fixed, I was able to get the Java Rhino process running on target with this (using the Windows build of Emacs, on Windows XP):
var project_folder = 'c:\\Progra~1\\emacs\site\\rhino-web-browser-js-environment\\';
Then in my 'flymake-js-init' function definition, I have this:
(list "java" (list "-jar" "c:/Progra~1/rhino1_6R7/js.jar" "c:/Progra~1/emacs/site/rhino-web-browser-js-environment/rhino_flymake.js" local-file))))
That said, after said success I ran into other problems, apparently unrelated to any of my previous fixes and configurations, down the road. Please see the last half of the third comment on [http://groups.google.com/group/gnu.emacs.help/browse_thread/thread/0cd12cf6b61e7923#d734eb7aedf67971 this post] on gnu.emacs.help.
It would be very cool if this could be made to work. If we can figure it out, we could make a nice how-to on this that I bet a lot of people would benefit from.
-- ChristopherMBalz
[new]
I get a lot of errors on the first line, like
- Context.Java(1757)
- MemberBox.java(187)
etc.
That is this?
== With JSHINT on Windows using Cscript.exe ==
There's no need to install Rhino on Windows; Windows has a built-in Javascript engine in WSH. Therefore you can run a JS program on any Windows, via WSH. Which means you can run JSHINT. Please note that this solution does not work for JSLint: Since February 2013, [http://tech.groups.yahoo.com/group/jslint_com/message/3128 JSLint requires ECMAScript Fifth Edition], and does not run with WSH anymore.
There are two modules; both allow you to use JSHINT as the flymake tool for .js buffers on windows.
The first, [http://code.google.com/p/jslint-for-wsh/source/browse/#svn/trunk flymake-for-jslint-for-wsh.el], requires you to download JSHINT, modify it slightly, save it, and set a variable in your .emacs pointing to the modified script.
[http://cheeso.members.winisp.net/srcview.aspx?dir=emacs&file=fly-jshint-wsh.el A newer version] downloads and modifies JSHINT at runtime. This version is also available on the Marmalade Repo as [http://marmalade-repo.org/packages/fly-jshint-wsh fly-jshint-wsh].
A sample of using jslint-for-wsh.js as a "compile" command in emacs:
http://i49.tinypic.com/11kuypx.jpg
== See Also ==
NodeJs
----
FlyMake CategoryJavaScript