Which status code means a successful API response?
Anonymous Quiz
68%
a) 200
18%
b) 404
9%
c) 500
5%
d) 301
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Top 10 Javascript Interview Questions With Answers 👇👇
1. What is JavaScript?
JavaScript is a high-level, interpreted programming language that is used to make web pages interactive and dynamic. It is commonly used for front-end development and can also be used for back-end development with the help of Node.js.
2. What are the data types in JavaScript?
JavaScript has six primitive data types: string, number, boolean, null, undefined, and symbol. It also has an object data type, which includes arrays and functions.
3. What is the difference between == and === in JavaScript?
The == operator compares the values of two variables, while the === operator compares both the values and the types of the variables. For example, 5 == "5" would return true, but 5 === "5" would return false.
4. What is a closure in JavaScript?
A closure is a function that has access to its own scope, the outer function's scope, and the global scope. It allows for encapsulation and private data in JavaScript.
5. What is the use of the 'this' keyword in JavaScript?
The 'this' keyword refers to the object that is currently executing the current function. Its value is determined by how a function is called.
6. What are callbacks in JavaScript?
A callback is a function that is passed as an argument to another function and is executed after a specific event or task has been completed. Callbacks are commonly used in asynchronous programming.
7. What are arrow functions in JavaScript?
Arrow functions are a more concise way to write function expressions in JavaScript. They have a shorter syntax and do not bind their own 'this' value.
8. What is event bubbling in JavaScript?
Event bubbling is a mechanism in which an event triggered on a child element will also trigger on its parent elements, propagating up the DOM tree.
9. What is the difference between let and var in JavaScript?
The let keyword was introduced in ES6 and is used to declare block-scoped variables, while var declares function-scoped variables. Variables declared with var are hoisted to the top of their function scope, while let variables are not.
10. How does prototypal inheritance work in JavaScript?
In JavaScript, objects can inherit properties and methods from other objects through prototype chaining. When a property or method is accessed on an object, JavaScript will look up the prototype chain to find it if it's not directly on the object itself.
You can check these resources for Coding interview Preparation
Credits: https://t.iss.one/free4unow_backup
All the best 👍👍
1. What is JavaScript?
JavaScript is a high-level, interpreted programming language that is used to make web pages interactive and dynamic. It is commonly used for front-end development and can also be used for back-end development with the help of Node.js.
2. What are the data types in JavaScript?
JavaScript has six primitive data types: string, number, boolean, null, undefined, and symbol. It also has an object data type, which includes arrays and functions.
3. What is the difference between == and === in JavaScript?
The == operator compares the values of two variables, while the === operator compares both the values and the types of the variables. For example, 5 == "5" would return true, but 5 === "5" would return false.
4. What is a closure in JavaScript?
A closure is a function that has access to its own scope, the outer function's scope, and the global scope. It allows for encapsulation and private data in JavaScript.
5. What is the use of the 'this' keyword in JavaScript?
The 'this' keyword refers to the object that is currently executing the current function. Its value is determined by how a function is called.
6. What are callbacks in JavaScript?
A callback is a function that is passed as an argument to another function and is executed after a specific event or task has been completed. Callbacks are commonly used in asynchronous programming.
7. What are arrow functions in JavaScript?
Arrow functions are a more concise way to write function expressions in JavaScript. They have a shorter syntax and do not bind their own 'this' value.
8. What is event bubbling in JavaScript?
Event bubbling is a mechanism in which an event triggered on a child element will also trigger on its parent elements, propagating up the DOM tree.
9. What is the difference between let and var in JavaScript?
The let keyword was introduced in ES6 and is used to declare block-scoped variables, while var declares function-scoped variables. Variables declared with var are hoisted to the top of their function scope, while let variables are not.
10. How does prototypal inheritance work in JavaScript?
In JavaScript, objects can inherit properties and methods from other objects through prototype chaining. When a property or method is accessed on an object, JavaScript will look up the prototype chain to find it if it's not directly on the object itself.
You can check these resources for Coding interview Preparation
Credits: https://t.iss.one/free4unow_backup
All the best 👍👍
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📚 Top 10 HTML Interview Questions With Answers
1. What is HTML?
HTML (HyperText Markup Language) is the standard language used to create and design web pages. It structures content by using elements and tags.
2. What are the different types of HTML tags?
There are block-level tags (like
3. What is the difference between HTML elements and tags?
A tag is the markup itself (e.g.,
4. What are semantic HTML elements?
Semantic elements clearly describe their meaning in a human- and machine-readable way. Examples include
5. What is the purpose of the
The
6. What are the different ways to include CSS in an HTML page?
CSS can be added via inline styles (
7. What is the difference between an ID and a Class in HTML?
ID is unique within a page and is used to identify a single element, while class can be assigned to multiple elements for styling or scripting.
8. How do you create a hyperlink in HTML?
Using the
9. What are HTML forms used for?
Forms collect user input and submit data to a server for processing, with tags like
10. What is the role of the
Meta tags provide metadata about the HTML document such as character set, page description, viewport settings, and SEO info.
Double Tap ♥️ For More
1. What is HTML?
HTML (HyperText Markup Language) is the standard language used to create and design web pages. It structures content by using elements and tags.
2. What are the different types of HTML tags?
There are block-level tags (like
<div>, <p>, <h1>) which start on a new line, and inline tags (like <span>, <a>, <img>) which do not start on a new line.3. What is the difference between HTML elements and tags?
A tag is the markup itself (e.g.,
<p>), while an element includes the opening tag, content, and closing tag (<p>Content</p>).4. What are semantic HTML elements?
Semantic elements clearly describe their meaning in a human- and machine-readable way. Examples include
<header>, <footer>, <article>, and <section>.5. What is the purpose of the
doctype declaration in HTML? The
<!DOCTYPE html> declaration defines the document type and version of HTML, helping browsers render the page correctly.6. What are the different ways to include CSS in an HTML page?
CSS can be added via inline styles (
style attribute), internal styles (<style> tag inside <head>), or external style sheets linked via <link> tag.7. What is the difference between an ID and a Class in HTML?
ID is unique within a page and is used to identify a single element, while class can be assigned to multiple elements for styling or scripting.
8. How do you create a hyperlink in HTML?
Using the
<a> tag with an href attribute, e.g., <a href="https://example.com">Link</a>.9. What are HTML forms used for?
Forms collect user input and submit data to a server for processing, with tags like
<form>, <input>, <textarea>, <button>, and more.10. What is the role of the
<meta> tag in HTML? Meta tags provide metadata about the HTML document such as character set, page description, viewport settings, and SEO info.
Double Tap ♥️ For More
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Web development cheatsheet Part-1 🌐📝
HTML Basics
- Structure:
- Headings:
- Links:
- Images:
- Lists:
- Forms:
CSS Basics
- Inline:
- Internal:
- External:
- Selectors:
- Flexbox/Grid for layout
JavaScript Basics
- Add to HTML:
- Variables:
- Functions:
- DOM:
Best Practices
- Use semantic tags:
- Keep CSS and JS in separate files
- Make sites responsive with media queries
React ❤️ for Part-2
HTML Basics
- Structure:
<html> <head> <title>Title</title> </head> <body> ... </body> </html>- Headings:
<h1> to <h6>- Links:
<a href="url">Text</a>- Images:
<img src="path.jpg" alt="desc">- Lists:
<ul><li>Item</li></ul> (unordered) <ol><li>Item</li></ol> (ordered)- Forms:
<form> <input type="text"> </form>CSS Basics
- Inline:
<p style="color:red;">Text</p>- Internal:
<style> p { color: blue; } </style>- External:
<link rel="stylesheet" href="style.css">- Selectors:
.class, #id, element- Flexbox/Grid for layout
JavaScript Basics
- Add to HTML:
<script src="script.js"></script>- Variables:
let, const, var- Functions:
function myFunc() { ... }- DOM:
document.getElementById("id")Best Practices
- Use semantic tags:
<nav>, <main>, <footer>- Keep CSS and JS in separate files
- Make sites responsive with media queries
React ❤️ for Part-2
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Web development cheatsheet Part-2 🚀
Responsive Design
1. Use media queries:
2. Flexbox:
3. Grid:
Animations & Effects
1. CSS transitions:
2. Keyframes:
3. Animate on scroll: Use libraries like AOS or simple JS for scroll events.
Performance & SEO
1. Optimize images (WebP, compression)
2. Use semantic HTML:
3. Meta tags for SEO:
4. Test with Lighthouse for performance and accessibility.
Deployment
1. Use Netlify, Vercel, or GitHub Pages for easy hosting.
2. Always minify CSS/JS before deploying.
React ❤️ for more
Responsive Design
1. Use media queries:
@media (max-width: 600px) { body { font-size: 14px; } }2. Flexbox:
display: flex; justify-content: center; align-items: center;3. Grid:
display: grid; grid-template-columns: 1fr 2fr;Animations & Effects
1. CSS transitions:
transition: all 0.3s ease;2. Keyframes:
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }3. Animate on scroll: Use libraries like AOS or simple JS for scroll events.
Performance & SEO
1. Optimize images (WebP, compression)
2. Use semantic HTML:
<header>, <main>, <footer>3. Meta tags for SEO:
<meta name="description" content="Your page description">4. Test with Lighthouse for performance and accessibility.
Deployment
1. Use Netlify, Vercel, or GitHub Pages for easy hosting.
2. Always minify CSS/JS before deploying.
React ❤️ for more
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No one knows about you and no one cares about you on the internet...
And this is a wonderful thing!
Apply for those jobs you don't feel qualified for!
It doesn't matter because almost nobody cares! You can make mistakes, get rejected for the job, give an interview that's not great, and you'll be okay.
This is the time to try new things and make mistakes and learn from them so you can grow and get better.
And this is a wonderful thing!
Apply for those jobs you don't feel qualified for!
It doesn't matter because almost nobody cares! You can make mistakes, get rejected for the job, give an interview that's not great, and you'll be okay.
This is the time to try new things and make mistakes and learn from them so you can grow and get better.
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5 beginner-friendly web development projects that can help you improve your skills
1. Personal Website or Portfolio:
- Create a website that showcases your resume, projects, and skills.
- Practice HTML and CSS to design the layout and style it.
2. To-Do List Application:
- Build a simple to-do list app using HTML, CSS, and JavaScript.
- Learn about DOM manipulation, event handling, and local storage.
3. Weather App:
- Develop a web app that fetches and displays weather information for a user's location.
- Use HTML, CSS, JavaScript, and APIs like OpenWeatherMap.
4. Blog or Blogging Platform:
- Create a basic blog or expand it into a blogging platform.
- Learn about databases (e.g., SQLite), server-side scripting (e.g., Node.js), and user authentication.
5. E-commerce Product Page:
- Design a product page for an e-commerce site.
- Practice building product grids, adding product details, and implementing a shopping cart feature.
These projects cover a range of web development skills, from front-end design to back-end development. As you work on them, you'll gain experience and confidence in web development.
1. Personal Website or Portfolio:
- Create a website that showcases your resume, projects, and skills.
- Practice HTML and CSS to design the layout and style it.
2. To-Do List Application:
- Build a simple to-do list app using HTML, CSS, and JavaScript.
- Learn about DOM manipulation, event handling, and local storage.
3. Weather App:
- Develop a web app that fetches and displays weather information for a user's location.
- Use HTML, CSS, JavaScript, and APIs like OpenWeatherMap.
4. Blog or Blogging Platform:
- Create a basic blog or expand it into a blogging platform.
- Learn about databases (e.g., SQLite), server-side scripting (e.g., Node.js), and user authentication.
5. E-commerce Product Page:
- Design a product page for an e-commerce site.
- Practice building product grids, adding product details, and implementing a shopping cart feature.
These projects cover a range of web development skills, from front-end design to back-end development. As you work on them, you'll gain experience and confidence in web development.
❤21
𝐒𝐐𝐋 𝐂𝐚𝐬𝐞 𝐒𝐭𝐮𝐝𝐢𝐞𝐬 𝐟𝐨𝐫 𝐈𝐧𝐭𝐞𝐫𝐯𝐢𝐞𝐰:
Join for more: https://t.iss.one/sqlanalyst
1. Danny’s Diner:
Restaurant analytics to understand the customer orders pattern.
Link: https://8weeksqlchallenge.com/case-study-1/
2. Pizza Runner
Pizza shop analytics to optimize the efficiency of the operation
Link: https://8weeksqlchallenge.com/case-study-2/
3. Foodie Fie
Subscription-based food content platform
Link: https://lnkd.in/gzB39qAT
4. Data Bank: That’s money
Analytics based on customer activities with the digital bank
Link: https://lnkd.in/gH8pKPyv
5. Data Mart: Fresh is Best
Analytics on Online supermarket
Link: https://lnkd.in/gC5bkcDf
6. Clique Bait: Attention capturing
Analytics on the seafood industry
Link: https://lnkd.in/ggP4JiYG
7. Balanced Tree: Clothing Company
Analytics on the sales performance of clothing store
Link: https://8weeksqlchallenge.com/case-study-7
8. Fresh segments: Extract maximum value
Analytics on online advertising
Link: https://8weeksqlchallenge.com/case-study-8
Join for more: https://t.iss.one/sqlanalyst
1. Danny’s Diner:
Restaurant analytics to understand the customer orders pattern.
Link: https://8weeksqlchallenge.com/case-study-1/
2. Pizza Runner
Pizza shop analytics to optimize the efficiency of the operation
Link: https://8weeksqlchallenge.com/case-study-2/
3. Foodie Fie
Subscription-based food content platform
Link: https://lnkd.in/gzB39qAT
4. Data Bank: That’s money
Analytics based on customer activities with the digital bank
Link: https://lnkd.in/gH8pKPyv
5. Data Mart: Fresh is Best
Analytics on Online supermarket
Link: https://lnkd.in/gC5bkcDf
6. Clique Bait: Attention capturing
Analytics on the seafood industry
Link: https://lnkd.in/ggP4JiYG
7. Balanced Tree: Clothing Company
Analytics on the sales performance of clothing store
Link: https://8weeksqlchallenge.com/case-study-7
8. Fresh segments: Extract maximum value
Analytics on online advertising
Link: https://8weeksqlchallenge.com/case-study-8
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Web Development Mastery: From Basics to Advanced 🚀
Start with the fundamentals:
- HTML
- CSS
- JavaScript
- Responsive Design
- Basic DOM Manipulation
- Git and Version Control
You can grasp these essentials in just a week.
Once you're comfortable, dive into intermediate topics:
- AJAX
- APIs
- Frameworks like React, Angular, or Vue
- Front-end Build Tools (Webpack, Babel)
- Back-end basics with Node.js, Express, or Django
Take another week to solidify these skills.
Ready for the advanced level? Explore:
- Authentication and Authorization
- RESTful APIs
- GraphQL
- WebSockets
- Docker and Containerization
- Testing (Unit, Integration, E2E)
These advanced concepts can be mastered in a couple of weeks.
Remember, mastery comes with practice:
- Create a simple web project
- Tackle an intermediate-level project
- Challenge yourself with an advanced project involving complex features
Consistent practice is the key to becoming a web development pro.
Best platforms to learn:
- FreeCodeCamp
- Web Development Free Courses
- Web Development Roadmap
- Projects
- Bootcamp
Share your progress and learnings with others in the community. Enjoy the journey! 👩💻👨💻
Join @free4unow_backup for more free resources.
Like this post if it helps 😄❤️
ENJOY LEARNING 👍👍
Start with the fundamentals:
- HTML
- CSS
- JavaScript
- Responsive Design
- Basic DOM Manipulation
- Git and Version Control
You can grasp these essentials in just a week.
Once you're comfortable, dive into intermediate topics:
- AJAX
- APIs
- Frameworks like React, Angular, or Vue
- Front-end Build Tools (Webpack, Babel)
- Back-end basics with Node.js, Express, or Django
Take another week to solidify these skills.
Ready for the advanced level? Explore:
- Authentication and Authorization
- RESTful APIs
- GraphQL
- WebSockets
- Docker and Containerization
- Testing (Unit, Integration, E2E)
These advanced concepts can be mastered in a couple of weeks.
Remember, mastery comes with practice:
- Create a simple web project
- Tackle an intermediate-level project
- Challenge yourself with an advanced project involving complex features
Consistent practice is the key to becoming a web development pro.
Best platforms to learn:
- FreeCodeCamp
- Web Development Free Courses
- Web Development Roadmap
- Projects
- Bootcamp
Share your progress and learnings with others in the community. Enjoy the journey! 👩💻👨💻
Join @free4unow_backup for more free resources.
Like this post if it helps 😄❤️
ENJOY LEARNING 👍👍
❤10👍1👌1
🔰 JavaScript Roadmap for Beginners 2025
├── 🧠 What is JavaScript & How It Works in Browsers
├── 📄 Adding JavaScript to HTML (Script Tag, External Files)
├── 📝 Variables (var, let, const)
├── 🔢 Data Types & Type Conversion
├── 🔁 Operators (Arithmetic, Comparison, Logical)
├── 🔄 Conditional Statements (if, else, switch)
├── 🔁 Loops (for, while, do...while)
├── 🧩 Functions (Regular, Arrow Functions, Callbacks)
├── 🧱 Arrays & Array Methods (map, filter, reduce, etc.)
├── 📦 Objects & Object Methods
├── 📜 String Manipulation
├── 📅 Date & Time in JavaScript
├── ⚙️ The DOM (Document Object Model)
├── 🎯 Event Handling
├── ⌛ Async JS (setTimeout, setInterval, Promises)
├── 🌐 Fetch API & JSON
├── 📦 ES6+ Concepts (Destructuring, Spread, Rest, Modules)
├── 🧪 Mini Projects (To-Do List, Calculator, Weather App)
#javascript
├── 🧠 What is JavaScript & How It Works in Browsers
├── 📄 Adding JavaScript to HTML (Script Tag, External Files)
├── 📝 Variables (var, let, const)
├── 🔢 Data Types & Type Conversion
├── 🔁 Operators (Arithmetic, Comparison, Logical)
├── 🔄 Conditional Statements (if, else, switch)
├── 🔁 Loops (for, while, do...while)
├── 🧩 Functions (Regular, Arrow Functions, Callbacks)
├── 🧱 Arrays & Array Methods (map, filter, reduce, etc.)
├── 📦 Objects & Object Methods
├── 📜 String Manipulation
├── 📅 Date & Time in JavaScript
├── ⚙️ The DOM (Document Object Model)
├── 🎯 Event Handling
├── ⌛ Async JS (setTimeout, setInterval, Promises)
├── 🌐 Fetch API & JSON
├── 📦 ES6+ Concepts (Destructuring, Spread, Rest, Modules)
├── 🧪 Mini Projects (To-Do List, Calculator, Weather App)
#javascript
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