Quản Lý Sinh Viên Với Node.js

Cấu trúc gồm có các hàm :

          Hàm : getAllSV();

Hàm : addSV();

Hàm: getSV();

Hàm : hienAllSV();

Hàm: editSV();

Hàm : xoaSV();

Hàm : hienSV();

var storage = require('node-persist');

var student={id:"",name:""};

storage.initSync();

//get toan bo sv

function getAllSV()

{

          var student=storage.getItemSync('student');

          if(typeof student == "undefined")

          {

                   return [];

          }

          return student;

}

// them sv

function addSV(id,name)

{

          var sv=getAllSV();

          for(var i=0;i<sv.length;i++)

          {

                   if(sv[i].id==id)

                   {

                             console.log("Id nay da ton tai");

                             return;

                   }

          }

          sv.push({

                   id:id,

                   name:name

          });

          storage.setItemSync("student",sv);

}

//get thong sv theo id

function getSV(id)

{

          var sv=getAllSV();

          for(var i=0;i<sv.length;i++)

          {

                   if(sv[i].id==id)

                             return sv[i];

          }

}

//hien tat ca cac sv

function hienAllSV()

{

          var sv=getAllSV();

          for(var i=0;i<sv.length;i++)

          {

                   console.log(sv[i].id+ "   "+sv[i].name);

          }

}

//sua sv

function editSV(id,name)

{

          var sv=getAllSV();

          for(var  i=0;i<sv.length;i++)

          {

                   if(sv[i].id==id)

                   {

                             sv[i].name=name;

                   }

          }

          storage.setItemSync("student",sv);

}

//xoa sv theo id

function xoaSV(id)

{

          var sv=getAllSV();

          for(var i=0;i<sv.length;i++)

          {

                   if(sv[i].id==id)

                   {

                             sv.splice(i,1);

                   }

          }

          storage.setItemSync("student",sv);

}

//hien thong tin mot sv

function hienSV(sv)

{

          console.log(sv.id+ "---"+sv.name);

}

addSV(1,"Tran van Linh");

addSV(2,"Bui van A");

addSV(3,"Le tat tung");

addSV(4,"Bui Hai Nam");

addSV(5,"Tran trong nghia");

var sv=getSV(1);

console.log("Tat ca SV: ");

hienAllSV();

xoaSV(1);

console.log("Sau khi xoa sv co id=1:");

hienAllSV();

var sv=getSV(2);

console.log("Thong tin sv co id=2:");

hienSV(sv);

console.log("Thong tin sv co khi edit sv co id=2:");

editSV(2,"La Hai Nam")

var edit=getSV(2);

hienSV(edit);

   

   Kết quả khi run: