Running Javascript from the command line.

js-cmd-line.md

Running JavaScript from the command line

I get quite frustrated running JS by pasting into Chrome/FF and sometimes I like to keep everything local. These are some notes on using Apple's built in intrerpreter, node or phantom.

Using Apple's built in interpreter

Create a symlink by putting jsc into /usr/bin

sudo ln -s /System/Library/Frameworks/JavaScriptCore.framework/Versions/A/Resources/jsc /usr/bin

1. Use the jsc alias as a REPL

jsc

2. Run a script using the jsc alias

Create a file and save it. Change to the saved directory and execute the file:

jsc hello.js

Using Node.js

Install Node using homebrew

brew update && brew install node

1. Bring up the REPL:

node

2. Run a script:

Create a file and save it. Change to the saved directory and execute the file:

node hello.js

Using PhantomJS

Install phantomjs using homebrew

brew update && brew install phantomjs

1. Bring up the REPL:

phantomjs

2. Run a script:

Create a file and save it. Change to the saved directory and execute the file:

phantomjs hello.js

I'm trying to run a single line of JavaScript in the command prompt. How can it be possible? or again i have to read the command output in the javascript!

I am not sure whether these all go on the same terminal line

@Rahizo yes these are all terminal commands and are entered one at a time as shown