Skip to main content

What's Virtual DOM?

There’s no big difference between the regular DOM and the virtual DOM. It’s better to think of the virtual DOM as React’s local and simplified copy of the HTML DOM. It allows React to do its computations within this abstract world and skip the real DOM operations, often slow and browser-specific. Real DOM operations are really really expensive.

The Virtual DOM is an abstraction of the HTML DOM. It is lightweight and detached from the browser-specific implementation details. 

One thing you should remember that the DOM itself was already an abstraction. So, Virtual DOM is an abstraction of an abstraction. :)


Labels:

Comments

Post a Comment

Popular posts from this blog

Multiplication Table in SQL Server

Multiplication Table in SQL Server This query gives the multiplication table from 1 to 10. DECLARE @A INT,                   @B INT,                   @C INT,                   @D VARCHAR (100)                   SELECT @A=1                  PRINT ' MULTIPLICATION TABLE 1-10' /****************************************/ /* Created By : Loganathan V */ /* Created On: 20-Sep-2010, Monday */ /* Purpose : Multiplication Table */ /* How to : RUN THE QUERY */ /****************************************/ WHILE (@A<=10) BEGIN         ...
5 comments
Read more

Virtual machines vs. Containers

One of the questions that often comes up to anybody who's in the cloud space is, what are the differences between virtual machines and container? When should use one versus the other? Unfortunately the answer is not so simple clear-cut. We can't say you should always use containers or always use virtual machines. But, there are some things to keep in mind. There are certain kinds of applications which benefit from running in containers or using micro services in general. Microservices means taking an application and decomposing it into smaller parts. This is really good if you need to build a web scale application and you need to have the ability to turn up different dials of performance somewhat independent of each other. For example, take the middleware piece or the front end or the database piece and you need to scale them individually. The other benefit of containers is a consistency between the development environment and the production environment where you can take thing...
Post a Comment
Read more

Node.js for Everything

Lots of web applications using Javascript for front end for a long time. Javascript enabling people to build really really interactive great products, we can use Javascript on the front end and on the back end. So, what do we do on the back end? Node.js is the answer. Here we'll see some of the npm packages that'll help us to enable Javascript in back end as well. Load balancing is the main one when you plan to host your application server environment. Node offers pm2 package to easy your job. It's modern CLI process manager for Node apps with a builtin load-balancer. npm install pm2@latest -g pm2 start app.js Next thing is running applications continuously. Yeah, we've a node package named forever. It's a simple CLI tool for ensuring that a given node script runs continuously. npm install forever -g forever start app.js Enabling debugging in Javascript client applications are easy. Debugging a node application is sometimes a black box sometimes not, but one of the ...
Post a Comment
Read more