Web-beautify is a formatting package of HTML, CSS and JavaScript/JSON for Emacs. It uses the command-line/node.js javascript formatter from http://jsbeautifier.org/ to format whole html, css, js or json files, or region.

• HTML, CSS, and JavaScript/JSON formatting
• all settings are customizable (whitespace, formatting style, etc..) by .jsbeautifyrc configuration file.

• js-beautify installed by typing: npm -g install js-beautify

Just drop web-beautify.el. somewhere in your load-path.

(add-to-list 'load-path "~/somewhere")

If you're an Emacs 24 user or you have a recent version of package.el you can install web-beautify.el from the MELPA repository.

Add the following to your emacs init file.

(require 'web-beautify) ;; Not necessary if using ELPA package
(eval-after-load 'js2-mode
  '(define-key js2-mode-map (kbd "C-c b") 'web-beautify-js))
;; Or if you're using 'js-mode' (a.k.a 'javascript-mode')
(eval-after-load 'js
  '(define-key js-mode-map (kbd "C-c b") 'web-beautify-js))

(eval-after-load 'json-mode
  '(define-key json-mode-map (kbd "C-c b") 'web-beautify-js))

(eval-after-load 'sgml-mode
  '(define-key html-mode-map (kbd "C-c b") 'web-beautify-html))

(eval-after-load 'css-mode
  '(define-key css-mode-map (kbd "C-c b") 'web-beautify-css))

If you want to automatically format before saving a file, add the following hook to your emacs configuration:

(eval-after-load 'js2-mode
  '(add-hook 'js2-mode-hook
             (lambda ()
               (add-hook 'before-save-hook 'web-beautify-js-buffer t t))))

;; Or if you're using 'js-mode' (a.k.a 'javascript-mode')
(eval-after-load 'js
  '(add-hook 'js-mode-hook
             (lambda ()
               (add-hook 'before-save-hook 'web-beautify-js-buffer t t))))

(eval-after-load 'json-mode
  '(add-hook 'json-mode-hook
             (lambda ()
               (add-hook 'before-save-hook 'web-beautify-js-buffer t t))))

(eval-after-load 'sgml-mode
  '(add-hook 'html-mode-hook
             (lambda ()
               (add-hook 'before-save-hook 'web-beautify-html-buffer t t))))

(eval-after-load 'css-mode
  '(add-hook 'css-mode-hook
             (lambda ()
               (add-hook 'before-save-hook 'web-beautify-css-buffer t t))))

The following js-beautify settings are available with .jsbeautifyrc. Check out the official jsbeautifier documentation for more details on the options:

Thease are JavaScript Beautifier Options:

• indent_size: Indentation size [4]
• indent_char: Indentation character [" "]
• indent_level: Initial indentation level [0]
• indent_with_tabs: Indent with tabs [false]
• preserve_newlines: Preserve line-breaks [true]
• max_preserve_newlines: Number of line-breaks to be preserved in one chunk [10]
• space_in_paren: Add padding spaces within paren, ie. f( a, b ) [false]
• jslint_happy: Enable jslint-stricter mode [false]
• brace_style: [collapse|expand|end-expand] ["collapse"]
• break_chained_methods: Break chained method calls across subsequent lines [false]
• keep_array_indentation: Preserve array indentation [false]
• unescape_strings: Decode printable characters encoded in xNN notation [false]
• wrap_line_length: Wrap lines at next opportunity after N characters [0]
• e4x: Pass E4X xml literals through untouched [false]
• space_before_conditional: should the space before conditional statement be added [true]
• keep_function_indentation: false
• eval_code: false

Thease are CSS Beautifier Options:

• indent_size: Indentation size [4]
• indent_char: Indentation character [" "]

Thease are HTML Beautifier Options:

• indent_inner_html: Indent and sections. [false]
• indent_size: Indentation size [4]
• indent_char: Indentation character [" "]
• brace_style: [collapse|expand|end-expand] ["collapse"]
• indent_scripts: [keep|separate|normal] ["normal"]
• wrap_line_length: Maximum characters per line (0 disables) [250]
• preserve_newlines: Preserve line-breaks [true]
• max_preserve_newlines: Number of line-breaks to be preserved in one chunk [10]
• unformatted: List of tags (defaults to inline) that should not be reformatted

Web-beautify supports .jsbeautifyrc JSON files.

A hierarchy of .jsbeautifyrc files is supported, where rc files at the deeper levels override the settings from rc files at higher levels. For example, given the file structure listed below, formatting /home/you/myProject/app.js would inherit settings from: default -> /home/you/myProject/.jsbeautifyrc, while formatting /home/you/myProject/tests/test.js would inherit settings from: default -> /home/you/myProject/.jsbeautifyrc -> /home/you/myProject/tests/.jsbeautifyrc

• /home/you/myProject/.jsbeautifyrc
• /home/you/myProject/app.js
• /home/you/myProject/tests/.jsbeautifyrc
• /home/you/myProject/tests/test.js

Format region if active, otherwise the current buffer. Formatting is done according to the js-beautify command.

Format region if active, otherwise the current buffer. Formatting is done according to the css-beautify command.

Format region if active, otherwise the current buffer. Formatting is done according to the html-beautify command.

See LICENSE for details.