node js connect to mongodb atlas using mongoose code example

Example 1: connect mongoose to atlas

const mongoAtlasUri =
  "mongodb+srv://[email protected]:[email protected]/DB_NAme?retryWrites=true&w=majority";

try {
  // Connect to the MongoDB cluster
  mongoose.connect(
    mongoAtlasUri,
    { useNewUrlParser: true, useUnifiedTopology: true },
    () => console.log(" Mongoose is connected")
  );
} catch (e) {
  console.log("could not connect");
}

Example 2: mongoose connect to URL of atlas

try {
  mongoose.connect(MONGODB_URI || 'mongodb://localhost/YOUR_DB_NAME', {
      useNewUrlParser: true,
      useUnifiedTopology: true
    }, () =>
    console.log("connected"));
} catch (error) {
  console.log("could not connect");
}

Example 3: node js connect to mongodb using mongoose

//connect with mongodb
mongoose.connect('mongodb://localhost:27017/your_db_name', {useNewUrlParser: true});
//you can also specify with user and pass
mongoose.connect('mongodb://username:password@host:port/database?options...', {useNewUrlParser: true});
//or goto docs https://mongoosejs.com/docs/connections.html

Example 4: mongoose connect to atlas

mongoose.connect('mongodb://username:password@host:port/database?options...', {useNewUrlParser: true});