How do I write a query in node JS MongoDB?

Create a js file named “query2”, having the following code:

  1. var http = require(‘http’);
  2. var MongoClient = require(‘mongodb’). MongoClient;
  3. MongoClient. connect(url, function(err, db) {
  4. if (err) throw err;
  5. var query = { address: /^L/ };
  6. db. collection(“employees”). find(query).
  7. if (err) throw err;
  8. console. log(result);

How do you fetch data from MongoDB in node JS and display in HTML?

How to Fetch Data From mongodb in Node js and Display in HTML (ejs)

  1. Step 1 – Create Node Express js App.
  2. Step 2 – Install express flash ejs body-parser mongoose dependencies.
  3. Step 3 – Connect App to MongoDB.
  4. Step 4 – Create Model.
  5. Step 5 – Create Routes.
  6. Step 6 – Create HTML Table and Display List.

Can you query in MongoDB?

MongoDB provides a robust query mechanism for defining filtering criteria when retrieving documents. In this tutorial, you’ll learn how to query MongoDB collections using a different range of filters and conditions. You will also learn what cursors are and how to use them within the MongoDB shell.

How MongoDB is used with node?

Before we begin, we need to ensure you’ve completed a few prerequisite steps.

  1. Install Node. js.
  2. Install the MongoDB Node. js Driver.
  3. Create a free MongoDB Atlas cluster and load the sample data.
  4. Get your cluster’s connection info.
  5. Import MongoClient.
  6. Create our main function.
  7. List the databases in our cluster.
  8. Save Your File.

What is query in node JS?

The Node. js Query String provides methods to deal with query string. It can be used to convert query string into JSON object and vice-versa. To use query string module, you need to use require(‘querystring’).

How fetch data from MongoDB in node JS and display in HBS?

Example : Getting data from mongoDB using mongoose

  1. Step 1 : Create the db.
  2. db.js.
  3. Step 2 : Create views/layout/layout.
  4. views/layout/layout.hbs.
  5. Step 3 : Create the views/user/list.
  6. views/user/list.hbs.
  7. Step 4 : Create the server.
  8. server.js.

How render data from MongoDB to HTML?

You have to follow the below steps to display MongoDB data on the HTML page:

  1. Create Node Express js App.
  2. Install express flash ejs body-parser mongoose dependencies.
  3. Connect App to MongoDB.
  4. Create Model.
  5. Create Routes.
  6. Create HTML Table and Display List.
  7. Import Modules in App. js.
  8. Start App Server.

How does MongoDB query work?

MongoDB keeps most recently used data in RAM. If you have created indexes for your queries and your working data set fits in RAM, MongoDB serves all queries from memory. MongoDB does not cache the query results in order to return the cached results for identical queries.

Why MongoDB is preferred with node js?

MongoDB represents the data as a collection of documents rather than tables related by foreign keys. This makes it possible for the varied types of data dealt over the internet to be stored decently and accessed in the web applications using Node. js.

Which database is best for Node JS?

Node. js supports all kinds of databases no matter if it is a relational database or NoSQL database. However, NoSQL databases like MongoDb are the best fit with Node.