how to connect to mongodb in javascript

To connect to MongoDB from a Node.js application using mongoose, you first need to install the mongoose package using npm.

npm install mongoose
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After installing mongoose, you can use it to connect to your MongoDB database using the following code:

index.tsx
const mongoose = require('mongoose');

// Replace 'myDatabase' with the name of your database
mongoose.connect('mongodb://localhost/myDatabase', {
  useNewUrlParser: true,
  useUnifiedTopology: true
})
.then(() => {
  console.log('Connected to MongoDB');
})
.catch((error) => {
  console.log('Error connecting to MongoDB:', error);
});
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This code connects to a MongoDB database running on the localhost with the name 'myDatabase'. You can replace this with the URL of your MongoDB database.

The options object passed as the second argument to the connect function is used to configure the MongoDB driver. In this example, we've set the useNewUrlParser and useUnifiedTopology options to true, which are two recommended options to use when connecting to MongoDB with mongoose.

Once you've successfully connected to your MongoDB database, you can start using mongoose to interact with it.