gogoWebsite

const mongodb = require(“mongodb”);
const mongoClient = ;

function _connect(cb){
     ("mongodb://127.0.0.1:27017",{useNewUrlParser:true},function(err,client){
             if(err){
                 ("Connection failed");
             }else{
                ("Connected successfully");
                var db = ("weibo");
                cb(db);
             }
         })
 }



 function insert (coll,cb){
       _connect(function(db){
                 (coll).insert(obj,function(err,results){
                       cb(err, results)
                  })
                      (coll).insert(obj,cb)

         })
 }

 insert("contextList",{},function(err,results){


 });





 ("mongodb://127.0.0.1:27017",{useNewUrlParser:true},function(err,client){
     if(err){
         ("Connection failed");
     }else{
         var db = ("weibo");
         ("contextList").insert({},function(err,results){

         })
     }
 })