code.delx.au - gnu-emacs-elpa/blob - README.md

   1 js2-mode
   2 ========
   3
   4 An improved JavaScript mode for GNU Emacs. Forked from <http://code.google.com/p/js2-mode/>.
   5
   6 Install
   7 =======
   8
   9     $ git clone git://github.com/mooz/js2-mode.git
  10     $ cd js2-mode
  11     $ emacs --batch --eval '(byte-compile-file "js2-mode.el")'
  12
  13 Then, place js2-mode.elc into your site-lisp directory.
  14
  15 In you emacs config:
  16
  17     (autoload 'js2-mode "js2-mode" nil t)
  18     (add-to-list 'auto-mode-alist '("\\.js$" . js2-mode))
  19
  20 See <http://code.google.com/p/js2-mode/wiki/InstallationInstructions> for details.
  21
  22 Differences between original js2-mode.el
  23 ========================================
  24
  25 Support for abbreviated destructuring assignments
  26 -------------------------------------------------
  27
  28     let {a, b}       = {a: 10, b: 20}; // Abbreviated   (Not supported in original js2-mode.el)
  29     let {a: a, b: b} = {a: 10, b: 20}; // Same as above (Supported in original js2-mode.el)
  30
  31     (function ({responseText}) { /* */ })(xhr); // As the argument of function
  32
  33 Support for expression closure in property value
  34 ------------------------------------------------
  35
  36     let worker = {
  37         get age() 20,
  38         get sex() "male",
  39         fire: function () _fire()
  40     };
  41
  42 Supported more popular indentation style
  43 ----------------------------------------
  44
  45 When js2-consistent-level-indent-inner-bracket-p is non-nil
  46
  47     [foo, bar, baz].forEach(function (v) {
  48         if (validate(v))
  49             process(v);
  50     });
  51
  52     [a, b, c].some(function (v) {
  53         return validate(v);
  54     });
  55
  56 When js2-consistent-level-indent-inner-bracket-p is nil
  57 (Same as original js2-mode's indentation)
  58
  59     [foo, bar, baz].forEach(function (v) {
  60                                 if (validate(v))
  61                                     process(v);
  62                             });
  63
  64     [a, b, c].some(function (v) {
  65                        return validate(v);
  66                    });
  67
  68 Fixed the odd indentation of "else if" with no braces
  69 -----------------------------------------------------
  70
  71 In original js2-mode.el,
  72
  73     if (foo)
  74         return foo;
  75     else if (bar)
  76     return bar;      // here
  77
  78 In this js2-mode.el,
  79
  80     if (foo)
  81         return foo;
  82     else if (bar)
  83         return bar;  // fixed
  84
  85 Bugs
  86 ====
  87
  88 If you find problems, please report them to <http://github.com/mooz/js2-mode/issues>.