student.js

function add(student){
    console.log("新增學生:"+student+"成功");
}
//使用exports.方法名=方法名，相當於是給此模組建立了一個方法，只要其他檔案引入了此模組，就可以使用該方法
exports.add=add

teacher.js

function add(teacher){
    console.log("新增老師"+teacher+"成功");
}

exports.add=add

klass.js

var student=require("./student")
var teacher=require
 
("./teacher")


function addklass(teachername,students){
    teacher.add(teachername)
    students.forEach(function(item,index){
        student.add(item)
    })
}

exports.addklass=addklass

school.js

var school=require("./klass")
school.addklass("海賊王",['路飛','索隆'])