Emacs Func: Use ~/bin/jslint4java-1.4.4.jar to automatically JSLint the Javascript file

Emacs-JSLint

;;; C-x c calls jslint and outputs to the *compilation* buffer.
(setq jslint-wrapper (concat "java -jar " (substitute-in-file-name "$HOME") "/bin/jslint4java-1.4.4.jar "))
(require 'compile)
(add-hook 'javascript-mode-hook
  (lambda ()
    (set (make-local-variable 'compilation-read-command) nil)
    (set (make-local-variable 'compile-command)
     (concat jslint-wrapper buffer-file-name))
    (local-set-key (kbd "C-x c") 'compile)))

;;;auto check on save of a javascript file
(defun jslint-hook ()
  (let* ((filename (buffer-file-name))
         (suffix (downcase (file-name-extension filename))))
    (if (and filename (string= suffix "js"))
        (call-interactively 'compile))))
(add-hook 'after-save-hook 'jslint-hook)

(defun notify-compilation-result(buffer msg)
  "Notify that the compilation is finished,
close the *compilation* buffer if the compilation is successful,
and set the focus back to Emacs frame"
  (if (string-match "^finished" msg)
      (progn
        (delete-windows-on buffer)
        (tooltip-show "\n Compilation Successful :-) \n "))
    (tooltip-show "\n Compilation Failed :-( \n "))
  (setq current-frame (car (car (cdr (current-frame-configuration)))))
  (select-frame-set-input-focus current-frame))

(add-to-list 'compilation-finish-functions 'notify-compilation-result)

Also check out https://github.com/purcell/flymake-jslint, which uses flymake to show jslint hints directly in the javascript buffer.

-Steve