To run this recipe, we will need a custom module that we want to import using the require function; we can use the arg-parser.js module that we wrote in the Creating a custom module for PhantomJS recipe earlier in this chapter.

The script in this recipe is available in the downloadable code repository as recipe11.js under chapter02. If we run the provided example script, we must change to the root directory for the book's sample code.

Assuming that we are using our arg-parser.js script from the previous recipe, consider the following script:

var argParser = require('../lib/arg-parser'),
    args      = require('system').args.slice(1);

args = argParser...