怎么nodejs中mongodb查询完后再添加

发布网友 发布时间：2022-04-25 10:09

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热心网友 时间：2022-04-07 21:58

查询

var server = new mongodb.Server('localhost',27017,{auto_reconnect:true});
var db = new mongodb.Db('mydb',server,{safe:true});
db.open(function(err,db){
    if(!err)
    {   
      db.collection('mycoll',{safe:true},function(err,collection){
          var tmp1 = {title:'hello'};
          var tmp2 = {title:'world'};
          collection.insert([tmp1,tmp2],{safe:true},function(err,result){
              console.log(result);
          }); 
          collection.find().toArray(function(err,docs){
              console.log('find');
              console.log(docs);
          }); 
          collection.findOne(function(err,doc){
              console.log('findOne');
              console.log(doc);
          }); 
      });

删除

var mongodb = require('mongodb');
var server = new mongodb.Server('localhost',27017,{auto_reconnect:true});
var db = new mongodb.Db('mydb',server,{safe:true});
db.open(function(err,db){
    if(!err)
    {
      db.collection('mycoll',{safe:true},function(err,collection){
          collection.remove({title:'hello'},{safe:true},function(err,result){
              console.log(result);
          });
        
    }else{
        console.log(err);
    }         
                                
});