The Nullish coalescing operator, also known as the Javascript double question mark operator (??), is a logical operator that takes two input statements and returns the right-hand side statement if the left-hand side statement is false. Typically, it establishes default values for variables. Let’s discuss it further. Nullish Coalescing Operator in JavaScript The Nullish coalescing […]
What Is JavaScript Double Question Mark (??) Read More »
If you want to check if a field exists in a collection or filter out documents based on a certain field for either including or excluding them, you can use the $exists operator. Let’s quickly learn about it. MongoDB $exists Operator The $exists operator allows us to check the existence of a field in MongoDB
Check If a Field Exists in MongoDB Read More »
Unlike MySQL, where a query can perform various operations like creating tables, inserting records, deleting records, etc, in MongoDB we have separate functions for these such as createCollection(), insertOne(), insertMany(), deleteOne(), and deleteMany(). Queries in MongoDB do not handle such tasks. So what does it do? Queries in MongoDB are used to filter the result
Node.js MongoDB Query: With Sorting and Projection Read More »
When handling a large database, we generally use operators like $match and $filter to filter selections. However, MongoDB provides a more powerful operator called $elemMatch that can query arrays and embedded documents. Using $elemMatch, we can match specific conditions within an array or an embedded document, making our queries more precise and easily read. Let’s
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Every time you try to create a Flutter app, one thing you always encounter is the Scaffold class. Scaffold class is one of the most important topics in Flutter app development. So let’s deep dive into it. Introduction to Flutter Scaffold A Scaffold class is a foundational class in Flutter that provides us with several
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HTML (Hypertext Markup Language) is used to construct web pages and define their structure and components through various elements and tags. In Node.js, the npm node-html-parser module provides a powerful tool for HTML parsing. It simplifies interaction with HTML and lets us do tasks like data extraction, web scraping, content manipulation, etc. In this article,
Parsing HTML in Node.js with node-html-parser Read More »
NPM (Node Package Manager) is the default package manager for Node.js. It has been the sidekick for Node.js for over a decade and comes pre-bundled with it. Click here to read a detailed guide on NPM. While NPM provides many useful commands, the most useful ones are npm install and npm update. In this article,
Difference Between npm install and npm update in Node.js Read More »
Have you ever thought of creating a static website from your Next.js application? Yes, one of the coolest features of Next.js is the ability to export HTML/CSS/JS together and they work exactly the same as in the Next.js app and can be deployed to any static hosting service. Well, let’s see in detail how it
Export Static HTML Files from Next.js App Read More »
At this point, we have covered a lot of topics in our Next.js series that are enough to help you build your own very first Next.js app. But wait! Once you have built your next.js app and hosted it, you want to get a lot of views. To get views, your application must be highly
How to Optimize Next.js App to Improve Performance Read More »
Generally, we use something like this to create metadata in Next.js: And it works very well, as we can see below: But if you observe the source code, you can see one other that is by default defined by Next.js by root layout: The same goes for descriptions and other tags: Having duplicate metadata tags
Generate Dynamic Metadata in Next.js: Metadata Object & generateMetadata Options Read More »