function getList1(num) {

           var url= "netease/search?keyword=独孤天下&type=song&pageSize=10&page=0";

             return    ajaxGET(url)

   }

       function getList2(num) {

       return new Promise((resolve, reject) => {

             setTimeout(() => {

                 resolve("haha第2个啊")

             }, 1100);

         } )

   }

function getList0(num) {

       return new Promise((resolve, reject) => {

             setTimeout(() => {

                 resolve("haha第 0个啊")

             }, 10);

         } )

   }

      async function testResult() {

       try {

      let result0 = await getList0(); // 搜索 id

      let result1 = await getList1();//搜索歌词

       let result2 = await getList2(); // 搜索 id

        console.log(result0,result1,result2);

       } catch(err) {

                    console.log(err);

        }

    }

 testResult();

var ep = new eventproxy();

ep.all('data1_event', 'data2_event', 'data3_event', function (data1, data2, data3) {

 var html = fuck(data1, data2, data3);

 render(html);

});

$.get('http://data1_source', function (data) {

 ep.emit('data1_event', data);

 });

$.get('http://data2_source', function (data) {

 ep.emit('data2_event', data);

 });

$.get('http://data3_source', function (data) {

 ep.emit('data3_event', data);

 });

ar async=require('async')

var test=function(item,callback){

    setTimeout(function(){

        console.log(item+'ok')

        callback(null,item+'result')

    },2000)

}

var items=[1,2,3,4,5,7,8,9,10]

async.mapLimit(items,2,function(item,callback){

    test(item,callback)

},function(err,result){

    console.log(result)

})