Master Javascript :

The JavaScript Tree 👇
|
|── Variables
| ├── var
| ├── let
| └── const
|
|── Data Types
| ├── String
| ├── Number
| ├── Boolean
| ├── Object
| ├── Array
| ├── Null
| └── Undefined
|
|── Operators
| ├── Arithmetic
| ├── Assignment
| ├── Comparison
| ├── Logical
| ├── Unary
| └── Ternary (Conditional)
||── Control Flow
| ├── if statement
| ├── else statement
| ├── else if statement
| ├── switch statement
| ├── for loop
| ├── while loop
| └── do-while loop
|
|── Functions
| ├── Function declaration
| ├── Function expression
| ├── Arrow function
| └── IIFE (Immediately Invoked Function Expression)
|
|── Scope
| ├── Global scope
| ├── Local scope
| ├── Block scope
| └── Lexical scope
||── Arrays
| ├── Array methods
| | ├── push()
| | ├── pop()
| | ├── shift()
| | ├── unshift()
| | ├── splice()
| | ├── slice()
| | └── concat()
| └── Array iteration
| ├── forEach()
| ├── map()
| ├── filter()
| └── reduce()|
|── Objects
| ├── Object properties
| | ├── Dot notation
| | └── Bracket notation
| ├── Object methods
| | ├── Object.keys()
| | ├── Object.values()
| | └── Object.entries()
| └── Object destructuring
||── Promises
| ├── Promise states
| | ├── Pending
| | ├── Fulfilled
| | └── Rejected
| ├── Promise methods
| | ├── then()
| | ├── catch()
| | └── finally()
| └── Promise.all()
|
|── Asynchronous JavaScript
| ├── Callbacks
| ├── Promises
| └── Async/Await
|
|── Error Handling
| ├── try...catch statement
| └── throw statement
|
|── JSON (JavaScript Object Notation)
||── Modules
| ├── import
| └── export
|
|── DOM Manipulation
| ├── Selecting elements
| ├── Modifying elements
| └── Creating elements
|
|── Events
| ├── Event listeners
| ├── Event propagation
| └── Event delegation
|
|── AJAX (Asynchronous JavaScript and XML)
|
|── Fetch API
||── ES6+ Features
| ├── Template literals
| ├── Destructuring assignment
| ├── Spread/rest operator
| ├── Arrow functions
| ├── Classes
| ├── let and const
| ├── Default parameters
| ├── Modules
| └── Promises
|
|── Web APIs
| ├── Local Storage
| ├── Session Storage
| └── Web Storage API
|
|── Libraries and Frameworks
| ├── React
| ├── Angular
| └── Vue.js
||── Debugging
| ├── Console.log()
| ├── Breakpoints
| └── DevTools
|
|── Others
| ├── Closures
| ├── Callbacks
| ├── Prototypes
| ├── this keyword
| ├── Hoisting
| └── Strict mode
|
| END __

JavaScript Cheatsheet 📘


Do react,if you want more such notes 🚀

⌨️ JavaScript: Array Methods Visualized

Do react,if you want more such notes 🚀

#meme
PHP isn't going to die ...

Today we cover CSS positions, from position absolute, fixed and sticky

#css #frontend #developer #webdev

🔅 Learn CSS Flexbox in 20 Minutes (Course)

Learn how to create responsive websites with this CSS Flexbox Beginner Course. Display: flex; explained in 20 minutes.

In this CSS Flexbox Crash Course for beginners you are going to learn about responsive web design by getting CSS Flexbox explained. How to use display: flex plays a major rule in making a website responsive, resize elements, wrap elements and align html elements anywhere inside a div. Of course you are also going to learn how to center a div.

MongoDB Learning Roadmap: From Basics to Advanced

1. Getting Started with MongoDB

Introduction to MongoDB: What is MongoDB and why use it? Difference between NoSQL and SQL databases.

Setup: Install MongoDB and Compass (GUI for MongoDB). Set up a local or cloud MongoDB instance using MongoDB Atlas.



2. Core Concepts

Databases and Collections: Understand databases, collections, and documents.

CRUD Operations: Perform Create, Read, Update, and Delete operations using MongoDB shell or Compass.

BSON: Understand how MongoDB stores data in BSON format.



3. Querying Data

Basic Queries: Filter documents using find(). Use operators like $eq, $ne, $lt, $gt, $in, and $nin.

Advanced Queries: Use $and, $or, $not, and $nor. Query arrays and embedded documents.

Projections: Return specific fields using projections in queries.



4. Indexes

Purpose of Indexes: Speed up queries and optimize performance.

Create and Manage Indexes: Single field, compound, and text indexes.

Understand Index Impact: Use the explain() method to analyze query performance.



5. Aggregation Framework

Introduction: Understand the pipeline approach in aggregation.

Basic Stages: $match, $group, $sort, $limit, $project, and $lookup.

Advanced Stages: $unwind, $addFields, $replaceRoot, and $facet.



6. Data Modeling

Schema Design: Differences between embedding and referencing documents.

Relationships: One-to-One, One-to-Many, and Many-to-Many relationships.

Best Practices: Design schemas for scalability and performance.



7. Transactions

Multi-Document Transactions: Implement ACID transactions in MongoDB.

Use Cases: When to use transactions in NoSQL.



8. Working with MongoDB in Applications

MongoDB Drivers: Integrate MongoDB with programming languages like Node.js (Mongoose), Python (PyMongo), and Java.

CRUD Operations in Code: Perform database operations using drivers.



9. Administration and Optimization

Backup and Restore: Use mongodump and mongorestore for backups.

Performance Optimization: Optimize queries, manage indexes, and shard data for horizontal scaling.

Security: Configure authentication, roles, and encryption for secure access.



10. Build Projects



Beginner: Create a basic CRUD app (e.g., contact manager).

Intermediate: Build an inventory management system or blog backend.

Advanced: Design a scalable social media backend with user posts, comments, and likes.

Deploy on MongoDB Atlas or integrate with cloud platforms.

📂 Web Development Resources
ENJOY LEARNING 👍👍

🔅 A CSS Unit Deep Dive - Learn CSS Units & When To Use Them

00:00 intro
01:09 Pixel unit
06:15 em & rem
12:10 %, vh, vw
14:12 ch unit

There’s at least 40+ different length units in the CSS specification and initially I was going to go over literally each one of them until I realized how silly of an idea that was. The truth is, many of these units should either not be used at all or are rarely used for web design.