Server-side JavaScript

JavaScript Modules

Import external modules using the require() function. Server-side JavaScript library modules declare their exports using the global module.exports variable.

The importing module:

// Import the declared exports from the "util" module under the util "namespace".
// Because the path does not start with a / (or C:\ on Windows), resolve 
// the module path relative to the current module.
// Because there is no file extension, first try .sjs then .xqy.
// In this case, it resolves to ./util.sjs.
var util = require("util");

// Call the imported function
util.parseCurrency("$44,3829.01");

The imported library module, util.sjs:

module.exports = {
  // Export the "private" function with a public name
  parseCurrency: dollarToObject
};

// "Private" function local to the module
function dollarToObject(str) {
  if (str && str.match(/^\s*\$/)) {
    return {
      "value": parseFloat(str.replace(/[$,]/g, "")),
      "unit": "USD"
    }
  } else {
    throw new Error("Can't parse '" + str + "'");
  }
}

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Contents

Server-side JavaScript

JavaScript Modules