mongoose npm
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/my_database', {
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
useCreateIndex: true
})
.then(()=> console.log('connect'))
.catch((error) => console.error(error));mongoose
import express from 'express';
or
const exporess = require('express');
import mongoose from 'mongoose';
or
const mongoose = require('mongoose');
const app = express();
mongoose.connect('mongodb://localhost:27017/mongo-tree' , {
useNewUrlParser: true,
useUnifiedTopology: true
});
const db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
console.log('connected db')
});
app.use('/', (req, res) => {
res.send('hello');
}
);
const port = process.env.PORT || 5000
app.listen(port, () => {
console.log('running');
})
//for es6 >npm i @babel/core @babel/node @babel/preset-env --save-dev
//create .babelrc file and put this
{
"presets": [
"@babel/preset-env"
]
}
//and package.json
"scripts": {
"test": "echo "Error: no test specified" && exit 1",
"start": "nodemon --exec babel-node server"
},mongoose node js
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
// we're connected!
});Copyright © 2021 Codeinu
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