How to configure Syntastic with JSHint?

Question

How to use the Syntastic Vim plugin with JSHint to validate JavaScript code?

Environment:

• Ubuntu 11.04
• VIM - Vi IMproved 7.3

What I have installed, following the solution at VIM + JSLint?:

• Vundle
• node.js
• Node Package Manager
• jshint, globally
• Syntastic installed through Vundle (Used the :BundleInstall command inside Vim to make sure Syntastic was installed.)

.vimrc:

set nocompatible               " be iMproved
filetype off                   " required!

set rtp+=~/.vim/bundle/vundle/
call vundle#rc()

" let Vundle manage Vundle
" required! 
Bundle 'gmarik/vundle'

" My Bundles here:
Bundle 'scrooloose/syntastic'

filetype plugin indent on     " required! 

let g:syntastic_enable_signs=1
let g:syntastic_auto_jump=1
let g:syntastic_stl_format = '[%E{Err: %fe #%e}%B{, }%W{Warn: %fw #%w}]'

set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

looking for installed executables:

$ which gjslint
$ which jslint
$ which jsl
$ which jshint
/home/fernando/local/node/bin/jshint
$ 


$ echo $PATH

>/home/fernando/local/bin:/home/fernando/local/node/bin:/home/fernando/node_modules/.bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

$ jshint test.js

test.js: line 3, col 1, 'blbla' is not defined.
test.js: line 4, col 1, 'x' is not defined.
test.js: line 4, col 5, 'nonono' is not defined.
test.js: line 6, col 1, 'a' is not defined.
test.js: line 7, col 1, 'b' is not defined.
test.js: line 8, col 5, 'a' is not defined.
test.js: line 8, col 10, 'b' is not defined.
test.js: line 8, col 7, Expected '===' and instead saw '=='.

8 errors

$ vi test.js -- no error message shown

:SyntasticEnable -- Vim exits and restarts, opening the same file, but still no message

:w -- still no error message

:Errors -- the location list opens but it is empty

Both jshint and Syntastic seem to be installed, but something is probably missing. What would it be?

Answer 1

Here is a more updated info, there is a configuration to associate a file extension to a checker,
in your .vimrc

let g:syntastic_javascript_checkers = ['jshint']

Also to get info about what's going on run this command in vim

:SyntasticInfo

And you'll get an output similar to this:

Syntastic info for filetype: javascript  
Available checkers: gjslint jshint  
Currently active checker(s): gjslint  
Press ENTER or type command to continue