文档介绍：/**学****笔记:nodejs操作mongodb2016/4/6*/#nodejs操作mongodb`varmongodb=require('mongodb');varserver=('localhost',27017,{auto_reconnect:true});vardb=('mydb',server,{safe:true});//(function(err,db){if(!err){('connectdb');//连接Collection(可以认为是mysql的table)//第1种连接方式//('mycoll',{safe:true},function(err,collection){//if(err){//(err);//}//});//('mycoll',{safe:true},function(err,collection){if(err){(err);}else{//新增数据//vartmp1={id:'1',title:'hello',number:1};//(tmp1,{safe:true},function(err,result){//(result);//});//更新数据//({title:'hello'},{$set:{number:3}},{safe:true},function(err,result){//(result);//});//删除数据//({title:'hello'},{safe:true},function(err,result){//(result);//});//(collection);//查询数据vartmp1={title:'hello'};vartmp2={title:'world'};([tmp1,tmp2],{safe:true},function(err,result){(result);});().toArray(function(err,docs){('find');(docs);});(function(err,doc){('findOne');(doc);});}});//('delete...');////删除Collection//('mycoll',{safe:true},function(err,result){****//if(err){//('err:');//(err);//}else{//('ok:');//