Difference between revisions of "Js2-mode"
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| − | == | + | == Features == |
| + | |||
| + | * accurate '''syntax highlighting''' using a recursive-descent parser | ||
| + | * on-the-fly reporting of '''syntax errors''' and strict-mode warnings | ||
| + | * undeclared-variable warnings using a configurable externs framework | ||
| + | * "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 | ||
| + | * many customization options | ||
| + | * strict recognition of the Ecma-262 language standard | ||
| + | * support for most Rhino and SpiderMonkey extensions from 1.5 and up | ||
| + | * parsing support for ECMAScript for XML (E4X, ECMA-357) | ||
== Common Customization == | == Common Customization == | ||
Revision as of 14:09, 6 June 2017
| Description | major mode for JavaScript programming |
|---|---|
| Author | Steve Yegge |
| Maintainer | FSF |
| Source | http://bzr.savannah.gnu.org/lh/emacs/elpa/annotate/head:/packages/js2-mode/js2-mode.el |
| Part of Emacs | no |
js2-mode provides Emacs font-lock, indentation, and navigation for the JavaScript programming language. It also features an advanced JavaScript parser.
The original repository (at Google Code) seems to be outdated and https://github.com/mooz/js2-mode#readme seems to be a maintained fork. It includes several changes.
Basic setup
(package-install "js2-mode")
(require 'js2-mode)
Features
- accurate syntax highlighting using a recursive-descent parser
- on-the-fly reporting of syntax errors and strict-mode warnings
- undeclared-variable warnings using a configurable externs framework
- "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
- many customization options
- strict recognition of the Ecma-262 language standard
- support for most Rhino and SpiderMonkey extensions from 1.5 and up
- parsing support for ECMAScript for XML (E4X, ECMA-357)
Common Customization
See Also
- js2-refactor - A refactoring library based on js2-mode.
- Swank-js (homepage) - A REPL to interact with the browser.