转自：https://www.cnblogs.com/whoamme/p/3467374.html
首先安装nodejs mongodb
npm install mongodb
var mongodb = require('mongodb');
var server = new mongodb.Server('localhost', 27017, {auto_reconnect:true});
var db = new mongodb.Db('mydb', server, {safe:true});//连接db
db.open(function(err, db){if(!err){console.log('connect db');// 连接Collection（可以认为是mysql的table）// 第1种连接方式// db.collection('mycoll',{safe:true}, function(err, collection){// if(err){// console.log(err);// }// });// 第2种连接方式db.createCollection('mycoll', {safe:true}, function(err, collection){if(err){console.log(err);}else{//新增数据// var tmp1 = {id:'1',title:'hello',number:1};// collection.insert(tmp1,{safe:true},function(err, result){// console.log(result);// }); //更新数据// collection.update({title:'hello'}, {$set:{number:3}}, {safe:true}, function(err, result){// console.log(result);// });// 删除数据// collection.remove({title:'hello'},{safe:true},function(err,result){// console.log(result);// });// console.log(collection);// 查询数据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);}); }});// console.log('delete ...');// //删除Collection// db.dropCollection('mycoll',{safe:true},function(err,result){// if(err){// console.log('err:');// console.log(err);// }else{// console.log('ok:');// console.log(result);// }// }); }else{console.log(err);}
});
