As a programmer, we’re learning lots of technologies. We’re using multiple technologies in the development process. At that time we can’t remember all syntax, methods, functions, or other language-related rules. So, a cheat sheet is there to help us. It’s basically a document in which you can find syntax, methods…
Node is a leader in the asynchronous framework market. The platform now supports a huge portion of startups and businesses that are earning hundreds of millions of dollars in revenue. Thus, it establishes itself as a platform that can sustain a huge load, whilst retaining smooth performance. Node.js was perhaps…
Every day, devices are getting more and more updates in terms of hardware and software. There are N types of devices available in the market, and so, when companies release their apps, they need to make sure that they will work with every type of mobile in the market.
Part 2: A Comprehensive Collection of React Interview Questions in 2021
In case you missed part 1, then I highly recommend you go through that article once before reading this one. Let’s move forward.
What are the major features of React?
The major features of React are:
- It uses VirtualDOM instead of RealDOM considering that RealDOM manipulations are expensive.
- It supports server-side rendering.
- It follows Unidirectional data flow…
Let’s crack your interview together. Understand frequently asked questions in React interviews.
Do you want to make a career change for the better? Or did you spend a lot of time and energy preparing for an interview the following weekend? Do you know how many people are excluded from discussions just because they prepare ideas instead of focusing on the real questions…
Best JavaScript questions asked to me during an interview
In the past month, I’ve been giving interviews for JavaScript positions, and during some of the interviews, I encountered good questions. So I thought to share those with the needy ones.
Write output for the given code and explain
for (var i=1; i <= 3; i++){
setTimeout(function(){
console.log(i)
}, 100)
}Output:
4
4
4WHY? As per…
Still, struggling with JS numeric validation? Go and read the whole article
If you don’t know, let me tell you that in JS all numbers are encoded as a double-precision floating-point number. In short, it follows IEEE 754(International) standard. This will formate the number in 64 bits. …
Currently, Database security is a must. If you failed to do so, it will lead to major business loss. If the system architecture is large and the database is huge, then you must take major safety precautions. So before starting, you must choose an appropriate database, and its not an…
Ever had to deal with JS code that just didn’t run the way you expected it to? Maybe it seemed like functions got executed at random, unpredictable times, or the execution got delayed. There’s a chance you were dealing with a cool new feature that ES6 introduced: Promises!
So, it’s time: let’s talk about JavaScript Promises.
Basic questions: Why use them? When to use them? What are the “under the hood” functions of Promise? How to write in the simplest/modest way?
Sometimes we need to rely on other tasks in order to perform the next task. …
