diff --git a/imooc/app.js b/imooc/app.js
index 3fba50d..6c6cc31 100644
--- a/imooc/app.js
+++ b/imooc/app.js
@@ -13,6 +13,7 @@ var dbUrl='mongodb://localhost/imooc'
 var logger = require('morgan')
 var fs = require('fs')
 
+
 mongoose.connect('mongodb://localhost/imooc')
 //models loading
 var models_path = __dirname+'/app/models'
diff --git a/nodeschool/javascripting/program.js b/nodeschool/javascripting/program.js
new file mode 100644
index 0000000..da58a8a
--- /dev/null
+++ b/nodeschool/javascripting/program.js
@@ -0,0 +1,3 @@
+var pizza = 'pizza is alright'
+pizza = pizza.replace('alright','wonderful')
+console.log(pizza)
diff --git a/nodeschool/javascripting/rounding-numbers.js b/nodeschool/javascripting/rounding-numbers.js
new file mode 100644
index 0000000..be7dc8a
--- /dev/null
+++ b/nodeschool/javascripting/rounding-numbers.js
@@ -0,0 +1,3 @@
+var roundUp = 1.5
+var rounded = Math.round(roundUp)
+console.log(rounded)
diff --git a/nodeschool/javascripting/scope.js b/nodeschool/javascripting/scope.js
new file mode 100644
index 0000000..351a336
--- /dev/null
+++ b/nodeschool/javascripting/scope.js
@@ -0,0 +1,14 @@
+var a = 1, b = 2, c = 3;
+  (function firstFunction(){
+    var b = 5, c = 6;
+    (function secondFunction(){
+      var b = 8;
+      console.log("a: "+a+", b: "+b+", c: "+c);
+        (function thirdFunction(){
+          var a = 7, c = 9;
+          (function fourthFunction(){
+            var a = 1, c = 8;
+          })();
+        })();
+    })();
+  })();
diff --git a/nodeschool/learnyounode/mymodule.js b/nodeschool/learnyounode/mymodule.js
new file mode 100644
index 0000000..0481496
--- /dev/null
+++ b/nodeschool/learnyounode/mymodule.js
@@ -0,0 +1,13 @@
+var fs = require('fs')
+var path = require('path')
+
+module.exports = function(folder,ext,callback){
+  fs.readdir(folder,function(err,files){
+    if(err)
+      return callback(err)
+    files=rfiles.filter(function(file){
+      return path.extname(file)==='.'+ext
+    })
+    callback(null,files)
+  })
+}
diff --git a/nodeschool/learnyounode/program.js b/nodeschool/learnyounode/program.js
new file mode 100644
index 0000000..1df0f58
--- /dev/null
+++ b/nodeschool/learnyounode/program.js
@@ -0,0 +1,161 @@
+//婴儿学步
+// var a=0;
+// for(var i=2;i<=process.argv.length-2;i++){
+//   a+=Number(process.argv[i]);
+// }
+// console.log(a);
+//第一个I/O
+// var fs = require('fs')
+// var buf=fs.readFileSync(process.argv[2])
+// var str=buf.toString()
+// console.log(str.split('\n').length-1)
+//第一个异步I/O
+// var fs = require('fs')
+// var a=process.argv[2]
+// var buf=fs.readFile(a,function(err,content){
+//   console.log(content.toString().split('\n').length-1)
+// })
+//ls过滤器
+    // var fs = require('fs')
+    // var a=process.argv[2]
+    // fs.readdir(a,function(err,list){
+    //   for(var i=0;i<list.length;i++){
+    //     if(list[i].split('.')[1]==process.argv[3]){console.log(list[i])}
+    //   }
+    // })
+
+    // var fs = require('fs')
+    // var path = require('path')
+    // var folder = process.argv[2]
+    // var ext='.'+process.argv[3]
+    //
+    // fs.readdir(folder,function(err,files){
+    //   if(err) return console.log(err)
+    //   files.forEach(function(file){
+    //     if(path.extname(file) === ext){
+    //       console.log(file)
+    //     }
+    //   })
+    // })
+
+//使其模块化
+// var mymodule = require('./mymodule.js')
+// var folder = process.argv[2]
+// var ext =process.argv[3]
+// mymodule(folder,ext,function(err,content){
+//   if(err){return console.log(err)}
+//   content.forEach(function(file){
+//     console.log(file)
+//   })
+// })
+
+//http 客户端
+// var http = require('http')
+// var url = process.argv[2]
+// http.get(url,function(response){
+//   response.setEncoding('utf8');
+//   response.on("data",console.log)
+//   response.on('error',console.error)
+// })
+
+//http收集器
+// var http = require('http')
+// var cc = require('concat-stream')
+// http.get(process.argv[2],function(response){
+//   response.pipe(cc(function(data){
+//     console.log(data.length)
+//     console.log(data.toString())
+//   }))
+// })
+
+//玩转异步
+// var http = require('http')
+// var cc = require('concat-stream')
+// var count = 0
+// var results = []
+// function httpget(index){
+//   http.get(process.argv[2+index],function(response){
+//     response.pipe(cc(function(data){
+//       results[index]=data.toString()
+//       count++
+//       if(count==3)
+//         for(var i = 0;i<3;i++)
+//           console.log(results[i])
+//     }))
+//   })
+// }
+// for(var i =0;i<3;i++)
+//   httpget(i)
+
+//tcp 时间服务器
+// var net = require('net')
+// function zerofill(i){
+//   return (i<10?'0':'')+i
+// }
+// var server = net.createServer(function(socket){
+//   var date=new Date()
+//   var data = date.getFullYear()+"-"+zerofill(date.getMonth()+1)+"-"+zerofill(date.getDate())+" "+zerofill(date.getHours())+":"+zerofill(date.getMinutes())+"\n"
+//   socket.write(data)
+//   socket.end()
+// })
+// server.listen(process.argv[2])
+
+//http 文件服务器
+// var http = require('http')
+// var fs = require('fs')
+// var root = process.argv[2]
+// var file = process.argv[3]
+// var server = http.createServer(function(req,res){
+//   res.writeHead(200,{'content-type':'text/plain'})
+//   fs.createReadStream(file).pipe(res)
+// })
+// server.listen(root)
+
+//http 大写转换器
+// var http = require('http')
+// var map = require('through2-map')
+// var root = process.argv[2]
+// var server = http.createServer(function(req,res){
+//   if(req.method != 'POST')
+//     return res.end('send me a post \n')
+//
+//   req.pipe(map(function(chunk){
+//     return chunk.toString().toUpperCase()
+//   })).pipe(res)
+// })
+// server.listen(root)
+
+//json api 服务器
+var http = require('http')
+var url = require('url')
+
+function parsetime(time){
+  return {
+    hour:time.getHours(),
+    minute:time.getMinutes(),
+    second:time.getSeconds()
+  }
+}
+
+function unixtime(time){
+  return {unixtime:time.getTime()}
+}
+var server = http.createServer(function(req,res){
+  var Url = url.parse(req.url,true)
+  var time = new Date(Url.query.iso)
+  var result
+
+  if(/^\/api\/parsetime/.test(req.url))
+    result = parsetime(time)
+  else if(/^\/api\/unixtime/.test(req.url))
+    result = unixtime(time)
+
+  if(result){
+    res.writeHead(200,{'content-type':'application/json'})
+    res.end(JSON.stringify(result))
+  }else{
+    res.writeHead(404)
+    res.end()
+  }
+})
+server.listen(8080)