js2-mode | Emacs mode for editing Javascript programs | Mehr ...
This JavaScript editing mode supports: . - the full JavaScript language through version 1.7 - support for most Rhino and SpiderMonkey extensions from 1.5 to 1.7 - accurate syntax highlighting using a recursive-descent parser - syntax-error and strict-mode warning reporting - "bouncing" line indentation to choose among alternate indentation points - smart line-wrapping within comments and strings - code folding: - show some or all function bodies as {...} - show some or all block comments as /*...*/ - context-sensitive menu bar and popup menus - code browsing using the imenu' package - typing helpers (e.g. inserting matching braces/parens) - many customization options
