轻松学 Node.js - 基础篇免费视频教程 #4 模块

app.js

var stuff = require('./count');

// var pi = require('./count').pi;

console.log(stuff.counter(['ruby', 'nodejs', 'react']));
console.log(stuff.adder(3));
// console.log(pi);

count.js

var adder = function(a) {
    return `the sum of the 2 numbers is ${a+pi}`;
}

var pi = 3.14;

module.exports = {
    counter: function(arr) {
        return "There are " + arr.length + " elements in the array";
    },
    adder: adder
}