_creating-your-first-module.md

Code Examples for my Blog Post: Creating your First Node.js Module

The full Github repo can be found here: Creating your First Node.js Module

example-1.js

{
  "name" : "firstNodeJsModuleExample",
  "version" : "0.0.1",
  "dependencies" : {
    "dateTools": "file:my_modules/dateTools"
  }
}

example-2.js

var days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'],
    months = ['January', 'February', 'March', 'April', 'May', 'June', 
    'July', 'August', 'September', 'October', 'November', 'December'];
 
function getDays () {
    return days;
};
 
function getMonths () {
    return months;
};
 
function getDay (dayNumber) {
    return (Number.isInteger(dayNumber) && (dayNumber <= (days.length - 1))) ? days[dayNumber] : '';
};
 
function getMonth (monthNumber) {
    return (Number.isInteger(monthNumber) && (monthNumber <= (months.length - 1))) ? months[monthNumber] : '';
};
 
// export the module
module.exports = {
    getDays: getDays,
    getMonths: getMonths,
    getDay: getDay,
    getMonth: getMonth
};

example-3.js

{
  "name": "dateTools",
  "description": "Example Node Module",
  "private": true,
  "version": "1.0.0",
  "main": "index.js"
}

example-4.js

// require the dateTools module.
var dateTools = require('dateTools');


//demonstrate the getDay method
console.log('TEST 1: ' + dateTools.getDay(0)); //TEST 1: Monday
console.log('TEST 2: ' + dateTools.getDay(6)); //TEST 2: Sunday

//demonstrate the getMonth method
console.log('TEST 3: ' + dateTools.getMonth(0)); //TEST 3: January
console.log('TEST 4: ' + dateTools.getMonth(11)); //TEST 4: December

//demonstrate the getDays method
console.log('TEST 5: ' + dateTools.getDays()); //TEST 5: All seven days

//demonstrate the getMonths method
console.log('TEST 6: ' + dateTools.getMonths()); //TEST 6: All 12 months