When preparing for a Power BI interview, you should be ready to answer questions that assess your practical experience, understanding of Power BI’s features, and ability to solve real-world business problems using Power BI. Here are some key questions you might encounter, along with tips on how to answer them:
1. Can you describe a Power BI project you worked on? What was your role?
- Tip: Provide a detailed overview of the project, including the business problem, your role in the project, the data sources used, key metrics tracked, and the overall impact of the project. Focus on how you contributed to the project’s success.
2. How do you approach designing a dashboard in Power BI?
- Tip: Explain your process, from understanding the user’s requirements to planning the layout, choosing appropriate visuals, ensuring data accuracy, and focusing on user experience. Mention how you ensure the dashboard is both insightful and easy to use.
3. What are the challenges you’ve faced while working on Power BI projects, and how did you overcome them?
- Tip: Discuss specific challenges like data integration issues, performance optimization, or dealing with complex DAX calculations. Emphasize how you identified the issue and the steps you took to resolve it.
4. How do you manage large datasets in Power BI to ensure optimal performance?
- Tip: Talk about techniques like using DirectQuery, aggregations, optimizing data models, using measures instead of calculated columns, and leveraging Power BI’s performance analyzer to optimize the performance of reports.
5. How do you handle data security in Power BI?
- Tip: Discuss your experience with implementing row-level security (RLS), managing permissions, and ensuring sensitive data is protected. Mention any experience you have with setting up role-based access controls.
6. Can you explain how you use DAX in Power BI to create complex calculations?
- Tip: Provide examples of DAX formulas you’ve written to solve specific business problems. Discuss the logic behind the calculations and how they were used in your reports or dashboards.
7. How do you integrate Power BI with other tools or systems?
- Tip: Talk about your experience integrating Power BI with databases (like SQL Server), Excel, SharePoint, or using APIs to pull in data. Also, mention how you might export data or reports to other tools like Excel or PowerPoint.
8. Describe a situation where you used Power BI to provide insights that led to a significant business decision.
- Tip: Share a specific example where your Power BI report or dashboard uncovered insights that impacted the business. Focus on the outcome and how your analysis influenced the decision-making process.
9. How do you stay updated with new features and updates in Power BI?
- Tip: Mention resources you use like Microsoft’s Power BI blog, community forums, attending webinars, or taking courses. Emphasize the importance of continuous learning in your role.
10. What is your approach to troubleshooting a Power BI report that isn’t working as expected?
- Tip: Describe a systematic approach to identifying the root cause, whether it’s related to data refresh issues, incorrect DAX formulas, or visualization problems.
11. Can you walk us through how you set up and manage Power BI dataflows?
- Tip: Explain the process of creating dataflows, how you configure them to transform and clean data, and how they help in centralizing and reusing data across multiple reports.
13. How do you handle version control and collaboration in Power BI?
- Tip: Discuss how you use tools like OneDrive, SharePoint, or Power BI Service for version control, and how you collaborate with other team members on reports and dashboards.
I have curated the best interview resources to crack Power BI Interviews 👇👇
https://t.iss.one/DataSimplifier
Hope you'll like it
Like this post if you need more content like this 👍❤️
Share with credits: https://t.iss.one/sqlspecialist
Hope it helps :)
1. Can you describe a Power BI project you worked on? What was your role?
- Tip: Provide a detailed overview of the project, including the business problem, your role in the project, the data sources used, key metrics tracked, and the overall impact of the project. Focus on how you contributed to the project’s success.
2. How do you approach designing a dashboard in Power BI?
- Tip: Explain your process, from understanding the user’s requirements to planning the layout, choosing appropriate visuals, ensuring data accuracy, and focusing on user experience. Mention how you ensure the dashboard is both insightful and easy to use.
3. What are the challenges you’ve faced while working on Power BI projects, and how did you overcome them?
- Tip: Discuss specific challenges like data integration issues, performance optimization, or dealing with complex DAX calculations. Emphasize how you identified the issue and the steps you took to resolve it.
4. How do you manage large datasets in Power BI to ensure optimal performance?
- Tip: Talk about techniques like using DirectQuery, aggregations, optimizing data models, using measures instead of calculated columns, and leveraging Power BI’s performance analyzer to optimize the performance of reports.
5. How do you handle data security in Power BI?
- Tip: Discuss your experience with implementing row-level security (RLS), managing permissions, and ensuring sensitive data is protected. Mention any experience you have with setting up role-based access controls.
6. Can you explain how you use DAX in Power BI to create complex calculations?
- Tip: Provide examples of DAX formulas you’ve written to solve specific business problems. Discuss the logic behind the calculations and how they were used in your reports or dashboards.
7. How do you integrate Power BI with other tools or systems?
- Tip: Talk about your experience integrating Power BI with databases (like SQL Server), Excel, SharePoint, or using APIs to pull in data. Also, mention how you might export data or reports to other tools like Excel or PowerPoint.
8. Describe a situation where you used Power BI to provide insights that led to a significant business decision.
- Tip: Share a specific example where your Power BI report or dashboard uncovered insights that impacted the business. Focus on the outcome and how your analysis influenced the decision-making process.
9. How do you stay updated with new features and updates in Power BI?
- Tip: Mention resources you use like Microsoft’s Power BI blog, community forums, attending webinars, or taking courses. Emphasize the importance of continuous learning in your role.
10. What is your approach to troubleshooting a Power BI report that isn’t working as expected?
- Tip: Describe a systematic approach to identifying the root cause, whether it’s related to data refresh issues, incorrect DAX formulas, or visualization problems.
11. Can you walk us through how you set up and manage Power BI dataflows?
- Tip: Explain the process of creating dataflows, how you configure them to transform and clean data, and how they help in centralizing and reusing data across multiple reports.
13. How do you handle version control and collaboration in Power BI?
- Tip: Discuss how you use tools like OneDrive, SharePoint, or Power BI Service for version control, and how you collaborate with other team members on reports and dashboards.
I have curated the best interview resources to crack Power BI Interviews 👇👇
https://t.iss.one/DataSimplifier
Hope you'll like it
Like this post if you need more content like this 👍❤️
Share with credits: https://t.iss.one/sqlspecialist
Hope it helps :)
❤5
🔰 Java Roadmap for Beginners 2025
├── 🧠 What is Java? Platform Independence & JVM
├── ⚙️ Setting Up JDK & IDE (IntelliJ / Eclipse)
├── 📄 Java Program Structure & Syntax
├── 🔢 Variables, Data Types, Operators
├── 🔁 Control Flow (if, switch, loops)
├── 🧱 Arrays & Strings
├── 🏗 Classes, Objects & Constructors
├── 🧠 Inheritance, Polymorphism, Encapsulation
├── 🔧 Exception Handling
├── 📦 Packages & Access Modifiers
├── 🧩 Collections Framework (List, Set, Map)
├── ⚙️ Multithreading Basics
├── 📂 File I/O in Java
├── 🧪 Java Projects:
│ ├── Student Management System
│ ├── Simple Banking App
│ ├── To-do List Console App
Free Resources: https://whatsapp.com/channel/0029VamdH5mHAdNMHMSBwg1s
├── 🧠 What is Java? Platform Independence & JVM
├── ⚙️ Setting Up JDK & IDE (IntelliJ / Eclipse)
├── 📄 Java Program Structure & Syntax
├── 🔢 Variables, Data Types, Operators
├── 🔁 Control Flow (if, switch, loops)
├── 🧱 Arrays & Strings
├── 🏗 Classes, Objects & Constructors
├── 🧠 Inheritance, Polymorphism, Encapsulation
├── 🔧 Exception Handling
├── 📦 Packages & Access Modifiers
├── 🧩 Collections Framework (List, Set, Map)
├── ⚙️ Multithreading Basics
├── 📂 File I/O in Java
├── 🧪 Java Projects:
│ ├── Student Management System
│ ├── Simple Banking App
│ ├── To-do List Console App
Free Resources: https://whatsapp.com/channel/0029VamdH5mHAdNMHMSBwg1s
❤1
Here are some of the most popular python project ideas: 💡
Simple Calculator
Text-Based Adventure Game
Number Guessing Game
Password Generator
Dice Rolling Simulator
Mad Libs Generator
Currency Converter
Leap Year Checker
Word Counter
Quiz Program
Email Slicer
Rock-Paper-Scissors Game
Web Scraper (Simple)
Text Analyzer
Interest Calculator
Unit Converter
Simple Drawing Program
File Organizer
BMI Calculator
Tic-Tac-Toe Game
To-Do List Application
Inspirational Quote Generator
Task Automation Script
Simple Weather App
Automate data cleaning and analysis (EDA)
Sales analysis
Sentiment analysis
Price prediction
Customer Segmentation
Time series forecasting
Image classification
Spam email detection
Credit card fraud detection
Market basket analysis
NLP, etc
These are just starting points. Feel free to explore, combine ideas, and personalize your projects based on your interest and skills. 🎯
Simple Calculator
Text-Based Adventure Game
Number Guessing Game
Password Generator
Dice Rolling Simulator
Mad Libs Generator
Currency Converter
Leap Year Checker
Word Counter
Quiz Program
Email Slicer
Rock-Paper-Scissors Game
Web Scraper (Simple)
Text Analyzer
Interest Calculator
Unit Converter
Simple Drawing Program
File Organizer
BMI Calculator
Tic-Tac-Toe Game
To-Do List Application
Inspirational Quote Generator
Task Automation Script
Simple Weather App
Automate data cleaning and analysis (EDA)
Sales analysis
Sentiment analysis
Price prediction
Customer Segmentation
Time series forecasting
Image classification
Spam email detection
Credit card fraud detection
Market basket analysis
NLP, etc
These are just starting points. Feel free to explore, combine ideas, and personalize your projects based on your interest and skills. 🎯
❤3👍1
Web Development Interview Questions for Freshers
1. What happens when you type a URL in your browser and press Enter?
Answer:
DNS lookup happens to find the IP address
Browser sends an HTTP/HTTPS request to the server
Server processes and sends back HTML/CSS/JS
Browser renders the page using its rendering engine
2. What is the difference between GET and POST requests?
Answer:
GET: Sends data in the URL, used for fetching data
POST: Sends data in the body, used for submitting data securely
3. What is a responsive website?
Answer:
A responsive website adjusts layout and design based on screen size and device (mobile, tablet, desktop), usually using CSS media queries.
4. What is the role of Webpack in web development?
Answer:
Webpack bundles JavaScript files, CSS, and assets into optimized output for faster website loading and better performance.
5. What is the purpose of async and defer in script tags?
Answer:
async: Loads script asynchronously and executes it immediately
defer: Loads script asynchronously but executes after HTML is parsed
6. What is the difference between localStorage and sessionStorage?
Answer:
localStorage: Stores data with no expiration
sessionStorage: Stores data until the browser tab is closed
7. What is CORS?
Answer:
CORS (Cross-Origin Resource Sharing) is a browser security feature that restricts cross-domain API calls unless the server allows it.
8. What is the difference between null and undefined in JavaScript?
Answer:
undefined: A variable declared but not assigned a value
null: A variable explicitly set to have no value
9. How do you optimize website performance?
Answer:
Minify CSS/JS
Compress images
Use lazy loading
Use caching
Reduce HTTP requests
Use a CDN
10. What is the DOM?
Answer:
DOM (Document Object Model) represents the structure of an HTML document as objects, which JavaScript can interact with to change content dynamically.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
1. What happens when you type a URL in your browser and press Enter?
Answer:
DNS lookup happens to find the IP address
Browser sends an HTTP/HTTPS request to the server
Server processes and sends back HTML/CSS/JS
Browser renders the page using its rendering engine
2. What is the difference between GET and POST requests?
Answer:
GET: Sends data in the URL, used for fetching data
POST: Sends data in the body, used for submitting data securely
3. What is a responsive website?
Answer:
A responsive website adjusts layout and design based on screen size and device (mobile, tablet, desktop), usually using CSS media queries.
4. What is the role of Webpack in web development?
Answer:
Webpack bundles JavaScript files, CSS, and assets into optimized output for faster website loading and better performance.
5. What is the purpose of async and defer in script tags?
Answer:
async: Loads script asynchronously and executes it immediately
defer: Loads script asynchronously but executes after HTML is parsed
6. What is the difference between localStorage and sessionStorage?
Answer:
localStorage: Stores data with no expiration
sessionStorage: Stores data until the browser tab is closed
7. What is CORS?
Answer:
CORS (Cross-Origin Resource Sharing) is a browser security feature that restricts cross-domain API calls unless the server allows it.
8. What is the difference between null and undefined in JavaScript?
Answer:
undefined: A variable declared but not assigned a value
null: A variable explicitly set to have no value
9. How do you optimize website performance?
Answer:
Minify CSS/JS
Compress images
Use lazy loading
Use caching
Reduce HTTP requests
Use a CDN
10. What is the DOM?
Answer:
DOM (Document Object Model) represents the structure of an HTML document as objects, which JavaScript can interact with to change content dynamically.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
❤1
Web Development Interview Questions for Freshers
1. What happens when you type a URL in your browser and press Enter?
Answer:
DNS lookup happens to find the IP address
Browser sends an HTTP/HTTPS request to the server
Server processes and sends back HTML/CSS/JS
Browser renders the page using its rendering engine
2. What is the difference between GET and POST requests?
Answer:
GET: Sends data in the URL, used for fetching data
POST: Sends data in the body, used for submitting data securely
3. What is a responsive website?
Answer:
A responsive website adjusts layout and design based on screen size and device (mobile, tablet, desktop), usually using CSS media queries.
4. What is the role of Webpack in web development?
Answer:
Webpack bundles JavaScript files, CSS, and assets into optimized output for faster website loading and better performance.
5. What is the purpose of async and defer in script tags?
Answer:
async: Loads script asynchronously and executes it immediately
defer: Loads script asynchronously but executes after HTML is parsed
6. What is the difference between localStorage and sessionStorage?
Answer:
localStorage: Stores data with no expiration
sessionStorage: Stores data until the browser tab is closed
7. What is CORS?
Answer:
CORS (Cross-Origin Resource Sharing) is a browser security feature that restricts cross-domain API calls unless the server allows it.
8. What is the difference between null and undefined in JavaScript?
Answer:
undefined: A variable declared but not assigned a value
null: A variable explicitly set to have no value
9. How do you optimize website performance?
Answer:
Minify CSS/JS
Compress images
Use lazy loading
Use caching
Reduce HTTP requests
Use a CDN
10. What is the DOM?
Answer:
DOM (Document Object Model) represents the structure of an HTML document as objects, which JavaScript can interact with to change content dynamically.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
1. What happens when you type a URL in your browser and press Enter?
Answer:
DNS lookup happens to find the IP address
Browser sends an HTTP/HTTPS request to the server
Server processes and sends back HTML/CSS/JS
Browser renders the page using its rendering engine
2. What is the difference between GET and POST requests?
Answer:
GET: Sends data in the URL, used for fetching data
POST: Sends data in the body, used for submitting data securely
3. What is a responsive website?
Answer:
A responsive website adjusts layout and design based on screen size and device (mobile, tablet, desktop), usually using CSS media queries.
4. What is the role of Webpack in web development?
Answer:
Webpack bundles JavaScript files, CSS, and assets into optimized output for faster website loading and better performance.
5. What is the purpose of async and defer in script tags?
Answer:
async: Loads script asynchronously and executes it immediately
defer: Loads script asynchronously but executes after HTML is parsed
6. What is the difference between localStorage and sessionStorage?
Answer:
localStorage: Stores data with no expiration
sessionStorage: Stores data until the browser tab is closed
7. What is CORS?
Answer:
CORS (Cross-Origin Resource Sharing) is a browser security feature that restricts cross-domain API calls unless the server allows it.
8. What is the difference between null and undefined in JavaScript?
Answer:
undefined: A variable declared but not assigned a value
null: A variable explicitly set to have no value
9. How do you optimize website performance?
Answer:
Minify CSS/JS
Compress images
Use lazy loading
Use caching
Reduce HTTP requests
Use a CDN
10. What is the DOM?
Answer:
DOM (Document Object Model) represents the structure of an HTML document as objects, which JavaScript can interact with to change content dynamically.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
❤1
Web Development Interview Questions Part-2
11. What are semantic HTML elements?
Answer:
Semantic elements clearly describe their meaning in a human- and machine-readable way. Examples: <header>, <footer>, <article>, <nav>.
12. What are HTTP status codes?
Answer:
They indicate the result of an HTTP request.
Common ones:
200 OK (Success)
404 Not Found
500 Internal Server Error
401 Unauthorized
403 Forbidden
13. What is the box model in CSS?
Answer:
The box model includes:
Content
Padding
Border
Margin
It defines how space is taken up around HTML elements.
14. What are pseudo-classes in CSS?
Answer:
Pseudo-classes style elements based on their state.
Examples:
:hover (when mouse is over)
:first-child
:nth-child()
15. How do you make a website SEO-friendly?
Answer:
Use semantic HTML
Add meta tags and alt text
Mobile responsiveness
Fast loading speed
Proper URL structure
16. What is the difference between synchronous and asynchronous in JavaScript?
Answer:
Synchronous: Code runs line by line
Asynchronous: Tasks like API calls don't block other code; use callbacks, promises, or async/await
17. What is a promise in JavaScript?
Answer:
A Promise represents the result of an async operation.
It can be:
Pending
Fulfilled
Rejected
18. What is event bubbling and capturing in JavaScript?
Answer:
Bubbling: Event propagates from child to parent
Capturing: Event goes from parent to child
You can control it using event.stopPropagation()
19. What is a CDN?
Answer:
CDN (Content Delivery Network) delivers static files (images, CSS, JS) via servers closest to the user to improve website speed.
20. What tools do you use for version control?
Answer:
Most common: Git + GitHub
Git tracks changes in code, and GitHub helps you collaborate and manage versions.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
11. What are semantic HTML elements?
Answer:
Semantic elements clearly describe their meaning in a human- and machine-readable way. Examples: <header>, <footer>, <article>, <nav>.
12. What are HTTP status codes?
Answer:
They indicate the result of an HTTP request.
Common ones:
200 OK (Success)
404 Not Found
500 Internal Server Error
401 Unauthorized
403 Forbidden
13. What is the box model in CSS?
Answer:
The box model includes:
Content
Padding
Border
Margin
It defines how space is taken up around HTML elements.
14. What are pseudo-classes in CSS?
Answer:
Pseudo-classes style elements based on their state.
Examples:
:hover (when mouse is over)
:first-child
:nth-child()
15. How do you make a website SEO-friendly?
Answer:
Use semantic HTML
Add meta tags and alt text
Mobile responsiveness
Fast loading speed
Proper URL structure
16. What is the difference between synchronous and asynchronous in JavaScript?
Answer:
Synchronous: Code runs line by line
Asynchronous: Tasks like API calls don't block other code; use callbacks, promises, or async/await
17. What is a promise in JavaScript?
Answer:
A Promise represents the result of an async operation.
It can be:
Pending
Fulfilled
Rejected
18. What is event bubbling and capturing in JavaScript?
Answer:
Bubbling: Event propagates from child to parent
Capturing: Event goes from parent to child
You can control it using event.stopPropagation()
19. What is a CDN?
Answer:
CDN (Content Delivery Network) delivers static files (images, CSS, JS) via servers closest to the user to improve website speed.
20. What tools do you use for version control?
Answer:
Most common: Git + GitHub
Git tracks changes in code, and GitHub helps you collaborate and manage versions.
Credits: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z/847
❤5
Complete JavaScript Road Map🔥
A-Z JavaScript👇
1.Variables
↳ var
↳ let
↳ const
2. Data Types
↳ number
↳ string
↳ boolean
↳ null
↳ undefined
↳ symbol
3.Declaring variables
↳ var
↳ let
↳ const
4.Expressions
Primary expressions
↳ this
↳ Literals
↳ []
↳ {}
↳ function
↳ class
↳ function*
↳ async function
↳ async function*
↳ /ab+c/i
↳
↳ ( )
Left-hand-side expressions
↳ Property accessors
↳ ?.
↳ new
↳ new .target
↳ import.iss.oneta
↳ super
↳ import()
5.operators
↳ Arithmetic Operators: +, -, *, /, %
↳ Comparison Operators: ==, ===, !=, !==, <, >, <=, >=
↳ Logical Operators: &&, ||, !
6.Control Structures
↳ if
↳ else if
↳ else
↳ switch
↳ case
↳ default
7.Iterations/Loop
↳ do...while
↳ for
↳ for...in
↳ for...of
↳ for await...of
↳ while
8.Functions
↳ Arrow Functions
↳ Default parameters
↳ Rest parameters
↳ arguments
↳ Method definitions
↳ getter
↳ setter
9.Objects and Arrays
↳ Object Literal: { key: value }
↳ Array Literal: [element1, element2, ...]
↳ Object Methods and Properties
↳ Array Methods: push(), pop(), shift(), unshift(),
splice(), slice(), forEach(), map(), filter()
10.Classes and Prototypes
↳ Class Declaration
↳ Constructor Functions
↳ Prototypal Inheritance
↳ extends keyword
↳ super keyword
↳ Private class features
↳ Public class fields
↳ static
↳ Static initialization blocks
11.Error Handling
↳ try,
↳ catch,
↳ finally (exception handling)
ADVANCED CONCEPTS
--------------------------
12.Closures
↳ Lexical Scope
↳ Function Scope
↳ Closure Use Cases
13.Asynchronous JavaScript
↳ Callback Functions
↳ Promises
↳ async/await Syntax
↳ Fetch API
↳ XMLHttpRequest
14.Modules
↳ import and export Statements (ES6 Modules)
↳ CommonJS Modules (require, module.exports)
15.Event Handling
↳ Event Listeners
↳ Event Object
↳ Bubbling and Capturing
16.DOM Manipulation
↳ Selecting DOM Elements
↳ Modifying Element Properties
↳ Creating and Appending Elements
17.Regular Expressions
↳ Pattern Matching
↳ RegExp Methods: test(), exec(), match(), replace()
18.Browser APIs
↳ localStorage and sessionStorage
↳ navigator Object
↳ Geolocation API
↳ Canvas API
19.Web APIs
↳ setTimeout(), setInterval()
↳ XMLHttpRequest
↳ Fetch API
↳ WebSockets
20.Functional Programming
↳ Higher-Order Functions
↳ map(), reduce(), filter()
↳ Pure Functions and Immutability
21.Promises and Asynchronous Patterns
↳ Promise Chaining
↳ Error Handling with Promises
↳ Async/Await
22.ES6+ Features
↳ Template Literals
↳ Destructuring Assignment
↳ Rest and Spread Operators
↳ Arrow Functions
↳ Classes and Inheritance
↳ Default Parameters
↳ let, const Block Scoping
23.Browser Object Model (BOM)
↳ window Object
↳ history Object
↳ location Object
↳ navigator Object
24.Node.js Specific Concepts
↳ require()
↳ Node.js Modules (module.exports)
↳ File System Module (fs)
↳ npm (Node Package Manager)
25.Testing Frameworks
↳ Jasmine
↳ Mocha
↳ Jest
------------------- END-------------------
Some Good Resources To Learn JavaScript
1.Documentation
Mozilla MDN Web Docs
developer.mozilla.org/en-US/docs/Web…
DevDocs
devdocs.io/javascript/
2. Useful Channel's
Javascript Courses: https://t.iss.one/javascript_courses
Programming Resources: https://t.iss.one/programming_guide
FreeCodeCamp: youtube.com/c/FreeCodeCamp
Hope it helps 😊🌱
A-Z JavaScript👇
1.Variables
↳ var
↳ let
↳ const
2. Data Types
↳ number
↳ string
↳ boolean
↳ null
↳ undefined
↳ symbol
3.Declaring variables
↳ var
↳ let
↳ const
4.Expressions
Primary expressions
↳ this
↳ Literals
↳ []
↳ {}
↳ function
↳ class
↳ function*
↳ async function
↳ async function*
↳ /ab+c/i
↳
string↳ ( )
Left-hand-side expressions
↳ Property accessors
↳ ?.
↳ new
↳ new .target
↳ import.iss.oneta
↳ super
↳ import()
5.operators
↳ Arithmetic Operators: +, -, *, /, %
↳ Comparison Operators: ==, ===, !=, !==, <, >, <=, >=
↳ Logical Operators: &&, ||, !
6.Control Structures
↳ if
↳ else if
↳ else
↳ switch
↳ case
↳ default
7.Iterations/Loop
↳ do...while
↳ for
↳ for...in
↳ for...of
↳ for await...of
↳ while
8.Functions
↳ Arrow Functions
↳ Default parameters
↳ Rest parameters
↳ arguments
↳ Method definitions
↳ getter
↳ setter
9.Objects and Arrays
↳ Object Literal: { key: value }
↳ Array Literal: [element1, element2, ...]
↳ Object Methods and Properties
↳ Array Methods: push(), pop(), shift(), unshift(),
splice(), slice(), forEach(), map(), filter()
10.Classes and Prototypes
↳ Class Declaration
↳ Constructor Functions
↳ Prototypal Inheritance
↳ extends keyword
↳ super keyword
↳ Private class features
↳ Public class fields
↳ static
↳ Static initialization blocks
11.Error Handling
↳ try,
↳ catch,
↳ finally (exception handling)
ADVANCED CONCEPTS
--------------------------
12.Closures
↳ Lexical Scope
↳ Function Scope
↳ Closure Use Cases
13.Asynchronous JavaScript
↳ Callback Functions
↳ Promises
↳ async/await Syntax
↳ Fetch API
↳ XMLHttpRequest
14.Modules
↳ import and export Statements (ES6 Modules)
↳ CommonJS Modules (require, module.exports)
15.Event Handling
↳ Event Listeners
↳ Event Object
↳ Bubbling and Capturing
16.DOM Manipulation
↳ Selecting DOM Elements
↳ Modifying Element Properties
↳ Creating and Appending Elements
17.Regular Expressions
↳ Pattern Matching
↳ RegExp Methods: test(), exec(), match(), replace()
18.Browser APIs
↳ localStorage and sessionStorage
↳ navigator Object
↳ Geolocation API
↳ Canvas API
19.Web APIs
↳ setTimeout(), setInterval()
↳ XMLHttpRequest
↳ Fetch API
↳ WebSockets
20.Functional Programming
↳ Higher-Order Functions
↳ map(), reduce(), filter()
↳ Pure Functions and Immutability
21.Promises and Asynchronous Patterns
↳ Promise Chaining
↳ Error Handling with Promises
↳ Async/Await
22.ES6+ Features
↳ Template Literals
↳ Destructuring Assignment
↳ Rest and Spread Operators
↳ Arrow Functions
↳ Classes and Inheritance
↳ Default Parameters
↳ let, const Block Scoping
23.Browser Object Model (BOM)
↳ window Object
↳ history Object
↳ location Object
↳ navigator Object
24.Node.js Specific Concepts
↳ require()
↳ Node.js Modules (module.exports)
↳ File System Module (fs)
↳ npm (Node Package Manager)
25.Testing Frameworks
↳ Jasmine
↳ Mocha
↳ Jest
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Some Good Resources To Learn JavaScript
1.Documentation
Mozilla MDN Web Docs
developer.mozilla.org/en-US/docs/Web…
DevDocs
devdocs.io/javascript/
2. Useful Channel's
Javascript Courses: https://t.iss.one/javascript_courses
Programming Resources: https://t.iss.one/programming_guide
FreeCodeCamp: youtube.com/c/FreeCodeCamp
Hope it helps 😊🌱
❤3