Download Node.js
open https://nodejs.org/download/ to download Mac OS X Install (.pkg)
install Node.js
open Terminal
$ node -h
Usage: node [options] [ -e script | script.js ] [arguments]
node debug script.js [arguments]
Options: -v, --version print node's version -e, --eval script evaluate script -p, --print evaluate script and print result -i, --interactive always enter the REPL even if stdin does not appear to be a terminal --no-deprecation silence deprecation warnings --throw-deprecation throw an exception anytime a deprecated function is used --trace-deprecation show stack traces on deprecations --v8-options print v8 command line options --max-stack-size=val set max v8 stack size (bytes) --icu-data-dir=dir set ICU data load path to dir (overrides NODE_ICU_DATA) --enable-ssl2 enable ssl2 --enable-ssl3 enable ssl3
Environment variables: NODE_PATH ':'-separated list of directories prefixed to the module search path. NODE_MODULE_CONTEXTS Set to 1 to load modules in their own global contexts. NODE_DISABLE_COLORS Set to 1 to disable colors in the REPL NODE_ICU_DATA Data path for ICU (Intl object) data
Documentation can be found at http://nodejs.org/