THE CODE SCIENTIST
@mysticwillz
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Software Engineer @wajusoft 🖥️ | Exploring Tech ecosystem | Unwrapping Tech's Wonders, One Tweet at a time.
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HAPPY BIRTHDAY TO ME!! 🚀
Its time to release my inner child and embrace the joy that comes with growing older.
Say a prayer for me.
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HOW TO STRUCTURE YOUR FRONTEND CODE IN REACT [with explanations]
📁 my-react-app
├── 📄 README .md
├── 📁 public
│ ├── 📄 index.html
│ ├── 📄 favicon.ico
│ ├── 📁 css
│ └── 📁 images
├── 📁 src
│ ├── 📄 index.js
│
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You're a frontend engineer. 🗣️
A recruiter asked you this:
"For your project, when should you use svg or png? for
image and icon format"
Here's how to answer.
When responding to the question about whether to use SVG or PNG for images in your project,
should consider
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You were recently hired as a frontend developer,
Your first task is to optimize the performance of your company's website.
How can you achieve this?
Let me show you:
Optimizing performance is crucial for frontend development, here is how to achieve that in 5 steps.
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You're frontend developer, your boss asked you
'What security measures can we take to make our site more secure' ⭕️
Here's how to answer:🖊️
Six security measures you can take to make you're site more secure:
Input Validation:
Validate and sanitize user inputs to prevent
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You're in a Web development interview, you're asked
Do you recommend using OAuth or JWT (JSON Web Tokens) for secure user authorization?
Explain your authentication approach.
Here is how to answer, touching use cases and how it works 💯🪵
OAuth:
Use Case: OAuth is ideal
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As a frontend Developer.
Your boss asked you this:
"For our website, should we use pagination or infinite scrolling?"
Here's is how to highlight the Pros and Cons of Each 🎯👇
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You're a frontend developer🗣️
your boss asks you this
'How can you optimize web images in terms of file size and loading speed? '
Here's is how to answer:✏️
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You were recently hired as a frontend developer,
Your first task is to optimize the performance of your company's website.
How can you achieve this?
Let me show you👇👇
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2 major project ideas for frontend developers looking to land a job.
1. E-Commerce Platform
Tech Stack:
Frontend: HTML, CSS, JavaScript (React or Vue.js)
Backend: Firebase
Database: Firebase
Payment Gateway Integration: Stripe, Paystack, or Flutterwave.
User Authentication:
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In a coding interview, you were asked
'What are the advantages of using a JavaScript framework or library like React, Angular, or Vue?'
Here are 5 points to answer:
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In a web dev interview,
You're asked:
"What is the difference between synchronous and asynchronous JavaScript code"
Here's is how to answer:👇🙌
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You were recently hired as a frontend developer👨💻
'Your first task is to optimize the performance of your company's website.'
How can you achieve this? 🤔
Let me show you:
Here is how to achieve that in 5 steps.
Optimize Images:Compress and resize images to reduce
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You're interviewing for a web developer position. 🖥️
The interviewer asked:
"Can you clarify the key differences between HTTP and HTTPS, and why HTTPS is essential for web security?"
Here's how to answer:👇👇
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In a coding interview, you were asked
'What are the advantages of using a JavaScript framework or library like React, Angular, or Vue?'
Here are 5 points to answer:
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YOU CAN'T CALL YOURSELF A BACKEND DEVELOPER IF YOU DON'T KNOW THESE CONCEPTS
Here are 9 concepts all elite backend developers know:💯
Server-Side Programming:
Proficiency in one or more backend programming languages e.g Python, Node.js or Go.
Databases:
Relational Databases:
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Every web developer looking to improve their skills should build an e-commerce store.
Not a product page, but an actual e-commerce store.
Here's a list of all the features your store must have:
👇👇
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REACT FRONTEND INTERVIEW QUESTIONS😃
I compiled a comprehensive React interview questions; grouped by skill level: 🫂
Easy:
What is React and why is it popular?
Explain the virtual DOM and its significance in React.
What is JSX in React? How is it different from HTML?
How do
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You're a frontend developer
🗣️your boss asks you
How can you optimize web images in terms of file size and loading speed?
Here's is how to answer:✏️
Choosing the Right Image Format:
Use modern image formats like WebP, JPEG 2000, or AVIF when possible.
Resize Images:
Use
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2 major project ideas for frontend developers looking to land a job.
1. E-Commerce Platform
Tech Stack:
Frontend: HTML, CSS, JavaScript (React or Vue.js)
Backend: Firebase
Database: Firebase
Payment Gateway Integration: Stripe, Paystack, or Flutterwave.
User Authentication:
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HOW TO STRUCTURE YOUR BACKEND CODE IN EXPRESS JS (with detailed folder explanations)
📁
├── 📄 app.js
├── 📁 bin
├── 📁 config
├── 📁 controllers
│ ├── 📄 customer.js
│ ├── 📄 product.js
│ └── ...
├── 📁 middleware
│ ├──
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The confidence that comes with adequate preparation is unmatched.
My CTO was just smiling during my coding assessment!
He can see the result of my years of hardwork and perseverance.
Anyways i got promoted yesterday😀😀
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If you ever want to become A GREAT FRONTEND DEVELOPER i made a detailed roadmap for you:
Enjoy 😇😇
Fundamentals:
HTML (Hypertext Markup Language): Learn the structure and semantics of web content.
CSS (Cascading Style Sheets): Understand styling, layout, and responsiveness
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You're in a React frontend interview 😇
The interviewer asks you this:👇
'In a step wise format explain how to implement lazy loading in a REACT APP'
Here's how to answer:🙌👇
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Every web developer looking to improve their skills should build an e-commerce store.
Not a product page, but an actual e-commerce store.
Here's a list of all the features your store must have:
🔄 User Authentication and Authorization
📦 Product Management (Add, Edit, Delete)
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2 BACKEND PROJECTS THAT WILL TAKE YOU FROM JUNIOR TO MID-LEVEL POSITION:
1.Building a RESTful API for a Medium-Sized Application:
Choose a medium-sized web application idea (e.g., a simple task management tool, etc.).
Design and implement a RESTful API for this application
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You're in a web development interview, and you're asked:
"Do you recommend using OAuth or JWT (JSON Web Tokens) for secure user authorization? "
How will you answer? Here's how 👇👇🏮:
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HOW TO STRUCTURE YOUR FRONTEND CODE IN REACT [with explanations]
📁 my-react-app
├── 📄 README .md
├── 📁 public
│ ├── 📄 index.html
│ ├── 📄 favicon.ico
│ ├── 📁 css
│ └── 📁 images
├── 📁 src
│ ├── 📄 index.js
│
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You're a frontend engineer. 🗣️
Your boss asked you this:
"For our project, should we use client-side or server-side rendering or both?"
Here's how to answer:👇👇
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703
You're in a web development interview.
The interviewer asked:
"Describe the differences between cookies, local storage, and session storage in web development"
Here's is how to answer:👇👇
6
125
700
2 major project ideas for frontend developers looking to land a job.
1. E-Commerce Platform
Tech Stack:
Frontend: HTML, CSS, JavaScript (React or Vue.js)
Backend: Firebase
Database: Firebase
Payment Gateway Integration: Stripe, Paystack, or Flutterwave.
User Authentication:
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TWO PROJECTS TO PRACTICE YOUR JAVASCRIPT SKILLS (with workflow and tools)
1. Online Marketplace for Local Artisans
Tech Stack:
Frontend: HTML, CSS, JavaScript
Backend: Node.js with Express.js
Database: MongoDB or PostgreSQL
User Authentication: JWT (JSON Web Tokens)
Payment
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You're in a web development interview.
The interviewer asked: "Describe the process of securing a web application"
Here's how to answer:🎯👇👇
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You're in an interview for a developer job position.💼 The interviewer asked:
"Explain what are 'Cookies', ' Session' and 'Local storage''.
Here's how to answer:
Cookies:
Small data stored in the user's browser.
Used for user preferences and authentication tokens.
Have
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You're a frontend engineer.
A recruiter asked you this:
"For your project, when should you use svg or png? for
image and icon format"
Here's how to answer.
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In a coding interview, you were asked
'What are the advantages of using a JavaScript framework or library like React, Angular, or Vue?'
Here are 5 points to answer:👇👇
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You're a frontend developer 🗣️
your boss asks you
How can you optimize web images in terms of file size and loading speed?
Here's is how to answer:✏️
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You're in a Web development job interview. 👨💻
The interviewer asked:
"What is Cross-Origin Resource Sharing (CORS) and what role does it play in Web security"
Here's a fun way to answer:👇👇 😋
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You're in a frontend developer and your boss asks you this:
Our website is slow, how can we make it faster.
How will you answer? (click to find out and also add yours👇👇)
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DO YOU WANT TO BECOME AN ELITE FRONTEND DEVELOPER?
Don't just learn Javascript and a Framework (React, Angular, Vue)
Here is a detailed checklist of all the core skills needed to achieve that pro level . 👇👇👇
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DAY 1 OF WEB DEVELOPMENT INTERVIEW SERIES:
In an interview you're asked
As a front-end developer, You're tasked with improving website speed.
'Do you recommend lazy loading or browser caching and why?'
Here's how to answer:
Both lazy loading and browser caching are valuable
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I compiled a list of top 50 React interview questions
Know these before that React Frontend Interview:
You may need to save it🤗📷
1. What is React, and how does it differ from other JavaScript frameworks/Libraries?
2. Explain the concept of a Virtual DOM in React.
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In a web dev interview,
You're asked:
"What is the difference between synchronous and asynchronous JavaScript code"
Here's is how to answer:👇👇💯
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Frontend is as difficult as Backend. I can argue this anytime, any day. And yes, I've been on both sides.
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In a Javascript interview, you're asked📙
'What is the difference between "null" and "undefined" in JavaScript, and how do you check for them?'
Here's a concise way to answer:👇✏️
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In a Frontend Developer Interview,You were asked
FlexBox vs Grid Layout in styling What would you use and why?
Here is how to answer: 👇
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🚀BECOME A FULLSTACK DEVELOPER (with project suggestions)
Stage 1: Foundations
Learn HTML, CSS, and JavaScript basics.
Project: Create a personal website/portfolio.
Stage 2: Front-end Development.
Dive into React, Angular, or Vue.js.
Project: Build a to-do list app.
Stage
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You're in a frontend developer interview.
The interviewer asked:
Describe the differences between localStorage and sessionStorage in terms of storing data in the browser
Here's is how to answer:👇👇
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Try these apps if you want to practice your Node skills
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You're in a backend developer interview.
The interviewer asked:
"How do you ensure the security of data and user information in a backend system?''
Here's is how to answer:
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You're interviewing for a web developer position. 🎯
The interviewer asked:
"Explain the role of Git and Github in web development projects."
Here's how to answer💯👇:
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You're a frontend engineer. 🗣️
Your boss asked you this:
"For our project, should we use client-side or server-side rendering or both?"
Here's how to answer:📷 👇
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You're in a web development interview.
The interviewer asked:
What is Single Page Application (SPA), and how does it differ from multi-page apps?
Here's how to answer
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As a web developer, imagine this scenario:
Your client wants to know whether to go with a single-page application or a multi-page website.
What's your recommendation?
Here're things i will consider: 🪵🪵
User Experience:
Choose SPAs for seamless interactivity, multi-page
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Frontend Developer Roadmap:🫡
1. The Basics:
Start with HTML for web page structure.
Learn CSS for styling and layout.
Understand basic JavaScript for interactivity.
2. Responsive Design:
Learn how to make websites work well on different screens (mobile, desktop, tablet).
3.
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In a web dev interview,
You're asked:
"What is the difference between synchronous and asynchronous JavaScript code"
Here's is how to answer:👇👇💨
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You're a Mid level Software Developer. 🗣️
An intern in your company asks you this
'What are HTTP and HTTPS and highlight their core differences'
Here is how to answer:💯
HTTP and HTTPS are two protocols used for communication between web browsers and web servers.
HTTP
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Best frontend developer roadmap (with actionable steps)
1. HTML & CSS:
Learn the fundamentals of HTML and CSS .
Understand the box model, positioning, and layout.
2. JavaScript:
Master the basics of JavaScript, including variables, data types, control flow, and functions.
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You're a frontend engineer and the Tech lead asks you
How can make our app faster?💨
Here's how to answer🎯👇👇
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You're in a backend developer interview.
The interviewer asked:
"How do you ensure the security of data and user information in a backend system?''
Here's is how to answer:👇👇
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HOW TO STRUCTURE YOUR BACKEND CODE IN EXPRESS JS (with detailed folder explanations)
📁 Root Directory
├── 📄 app.js
├── 📁 bin
├── 📁 config
├── 📁 controllers
│ ├── 📄 customer.js
│ ├── 📄 product.js
│ └── ...
├── 📁 middleware
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You're a web developer and someone asks you this🤔
'What is the difference between HTTP and HTTPS'
How will you answer?
Here 're all the difference you need to know👇🏮
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Your'e in a Backend interview
The Interviewer asks you this
'How do you secure your backend app from web attacks such as SQL injection, XSS, CSRF, etc.?'
Here's is how to answer👇👇
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You're a frontend developer💨
your boss asks you
How can you optimize web images in terms of file size and loading speed?
Here's is how to answer:👇👇
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You're in a Frontend development interview.
The interviewer asked:
"How do you handle cross-browser compatibility issues, and what tools do you use?"
How would you answer? Here is how to 👇👇.
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In a coding interview, you were asked
'What are the advantages of using a JavaScript framework or library like React, Angular, or Vue?'
Here are 5 points to answer:🫡
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You're interviewing for a Web Dev Position 👩💻
The interviewer asks you
'What are the benefits of using a Git in web development?' 🗞️▶️
Here's how to answer:
Using Git offers several key benefits; Here are a few:
Tracking Changes:
Git records code changes, helping developers
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2 Frontend projects that will take you from junior to mid level position.🪇👨🏫
1. Task Management Application:
Project Description:
Build a task management application that allows users to create, update, and organize their tasks.
This project emphasizes user experience, data
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you're in a javascript interview 😊
The Interviewer asks you this
Explain the concept of Async/Await in Javascript
Don't know how to answer? Open this 👇👇
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You're in a web development interview.
The interviewer asked:
"Describe the differences between cookies, local storage, and session storage in web development"
Here's is how to answer: 👇👇
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BACKEND DEVELOPER ROADMAP
backend-developer-roadmap
├──
├── foundational-knowledge
│ ├──
│ ├──
│ └──
├── web-development-basics
│ ├──
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Structured way to learn React:🙋♂️
EASY:
What is React and its role in web development?
The virtual DOM and its advantages.
Setting up a basic React development environment.
Creating a simple React component.
JSX (JavaScript XML) syntax.
Rendering elements and components.
Handling
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As a backend developer working in a Fintech startup:
Your CTO asks you this:
'For our APIs should we use Rest API or Graphql'
Which will you choose and why? (open to see my answer👇👇)
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You're in a web developer internship interview. 💼
The interviewer asked:
"What's a DOM (Document Object Model) in web development?"
Here's how to answer:👇👇
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You're a frontend engineer.
🗣️Your boss asked you this:
"For our website, should we use Skeleton loader or spinning loaders"
Here's how to answer:
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🧵 Frontend Engineer Thread:
Interviewers often ask this question:
"SVG or PNG for images and icons in your project and why?"
Let's break down the answer. 💡
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ALL THE HTML TAGS YOU NEED TO KNOW (grouped by their roles and use)🙋♂️
Document Structure:
<!DOCTYPE html>: Specifies the HTML version.
<html>: The root element of an HTML document.
<head>: Contains metadata about the document.<title>: Sets the title of the web page.
<meta>:
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BACKEND DEVELOPER ROADMAP
backend-developer-roadmap
├──
├── foundational-knowledge
│ ├──
│ ├──
│ └──
├── web-development-basics
│ ├──
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As web developer, you need to master writing API.
A frequently asked question is meaning and characteristics of a "RESTful" API. 🤔🤔
Here's a mega thread about RESTful API and how to write it:
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You're in a web development interview, and you're asked:
"Do you recommend using OAuth or JWT (JSON Web Tokens) for secure user authorization? Explain your authentication approach."
Here's how to answer, discussing use cases and how each method works:
OAuth:
Use Case:
OAuth
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You're at a web development interview. 📝
The interviewer asked:
"What is a web server and how does it play a crucial role in web development? ."
Here's how to answer:🙌👇
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HERE IS A DETAILED STEP BY STEP GUIDE TO FULLSTACK DEVELOPMENT:
🌐 Front-End Development:
HTML/CSS
JavaScript and a framework (e.g., React, Angular, or Vue.js)
🚀 Back-End Development:
Server-Side Language (e.g., Node.js, Python, Ruby)
Databases (SQL and NoSQL)
API
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You don't know REACT until you understand these topics 👇👇
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You're in a frontend developer interview.
The interviewer asked:
"Explain the difference between inline, block, and inline-block elements in HTML."
Here's is how to answer with examples👇👇
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You're in a backend developer interview.
The interviewer asked:
"How do you handle database migrations"
Answer like this 👇👇
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DAY 2 OF WEB DEVELOPMENT INTERVIEW SERIES:
In a web dev interview, You're asked this:
For website security. Do you recommend using server-side validation or client-side validation for input data?
Here's how to answer:🙌
Client-Side Validation:
Provides immediate user feedback
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2024 REACT FOLDER STRUCTURE TEMPLATE
/src
|-- /assets
| |-- /images
| |-- /styles
| |-- styles.css
|
|-- /components
| |-- /Common
| |-- Header.js
| |-- Footer.js
| |-- /Feature
| |-- FeatureComponent.js
|
|-- /containers
| |-- MainContainer.js
|
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In a coding interview, you were asked
'What are the advantages of using a JavaScript framework or library like React, Angular, or Vue?'
Here are 5 points to answer:👇👇
6
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339
You're in a web developer internship interview.
The interviewer asked:
"What are the key differences between GET and POST HTTP methods in web development?"
How would you answer? Here's how 👇👇:
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STRUCTURED WAY TO LEARN REACT (basic, intermediate and andvanced)
BASIC:
Introduction to React and Virtual DOM Basics of React and its Virtual DOM concept.
Setting Up and Basic ComponentsEnvironment setup and creating simple components.
JSX, Rendering, and User InteractionJSX
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You're a frontend engineer.
🗣️Your boss asked you this:
"For our website, should we use Skeleton loader or spinning loaders"
Here's how to answer:👇👇
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THE BEST WAY TO LEARN ANY SKILL IS BY CONSTANT PRACTICE.
Here are 20 app ideas to practice your vanilla JavaScript skills:
To-Do List App: Create a simple app to add, remove, and mark tasks as complete.
Calculator: Build a basic calculator with number buttons and arithmetic
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Common Node.js interview questions (grouped by beginner, intermediate, advanced and expert level)
Beginner Level:
What is Node.js?
What is npm?
Explain the basic principles of Node.js.
How does Node.js handle asynchronous operations?
What is the role of the package.json file in
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You're in a Frontend development interview.
The interviewer asked:
"How do you handle cross-browser compatibility issues, and what tools do you use?"
How would you answer? (Here is how to answer👇👇)
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You're in a React frontend interview
The interviewer asks you this:🤔
'In a step wise format explain how to implement lazy loading in a REACT APP'
Here's how to answer:🎯💯
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WEB DEVELOPER SKILLSET:✏️💯
Front-End Development:
HTML CSS JavaScript React, Angular, Vue.js
Back-End Development:
Node.js Express.js Django (Python) Ruby on Rails
Databases:
SQL (MySQL, PostgreSQL) NoSQL (MongoDB, Firebase)
Version Control:
Git GitHub/GitLab/Bitbucket
Web
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You're in a web development interview, and you're asked:
"Do you recommend using OAuth or JWT (JSON Web Tokens) for secure user authorization? Explain your authentication approach."
Here's how to answer, discussing use cases and how each method works:
OAuth:
Use Case:
OAuth
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You're interviweing for a frontend developer role
The Frontend Lead asks you this:
'Between infinite scrolling or pagination, which one is better for an e-commerce site'
Don't know how to answer? Open this👇👇
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