my-codespace-2026

JavaScript Learning Journey

This repository documents my daily JavaScript learning progress using
GitHub Codespaces + VS Code.

I am learning step-by-step with hands-on practice and daily commits.

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📅 Day 1: Variables & Data Types

Topics Covered

• Variables (let, const)
• Data Types
  • Number
  • String
  • Boolean
  • Null
  • Undefined
• Updating variable values
• console.log() usage
• Running JavaScript using Node.js

Programs Practiced

• Store and print values
• Check data types using typeof
• Update variable values
• Display multiple values together
• Redeclaration vs reassignment

Key Learning

Variables can be declared once and updated many times using let.

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📅 Day 2: Conditions (if / else)

Topics Covered

• if, else, else if
• Comparison operators (>, <, >=, <=, ===)
• Logical operators (&&)
• Decision making

Programs Practiced

• Positive / Negative number
• Even / Odd number
• Voting eligibility
• Largest of two numbers
• Pass / Fail
• Grade system
• Login validation
• Temperature check
• Number range check

Key Learning

JavaScript executes only the block whose condition is true.

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📅 Day 3: Loops (for / while)

Topics Covered

• for loop
• while loop
• Loop conditions and increments
• Accumulation using loops
• break statement
• Printing output line by line vs side by side

Programs Practiced

• Print numbers (1–10)
• Even and odd numbers
• Sum of numbers
• Multiplication table
• Countdown using while
• Stop loop using break

Key Learning

• Loops reduce repetition
• for is used when iterations are known
• while is used when condition controls the loop

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📅 Day 4: Functions

Topics Covered

• What is a function
• Creating and calling functions
• Parameters and arguments
• return statement
• Functions with conditions and loops
• Default parameters
• Arrow functions (intro)

Programs Practiced

• Simple function
• Function with parameters
• Add two numbers
• Square of a number
• Even / Odd function
• Age eligibility checker
• Sum from 1 to N
• Arrow function
• Calculator function

Key Learning

• Functions avoid repeating code
• return sends data back from a function
• console.log() only displays output

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📅 Day 5: Arrays

Topics Covered

• What an array is
• Creating arrays
• Accessing array elements using index
• Array length
• Updating array values
• Looping through arrays
• Common array methods:
  • push()
  • pop()
  • shift()
  • unshift()

🧪 Programs Practiced

• Create and print an array
• Access elements using index
• Find array length
• Update array values
• Loop through array using for
• Add elements using push()
• Remove last element using pop()
• Add element at start using unshift()
• Remove element from start using shift()
• Find sum of numbers in an array

Key Learnings

• Arrays store multiple values in one variable
• Array index starts from 0
• .length helps control loops
• push() adds an element at the end
• pop() removes the last element
• unshift() adds an element at the beginning
• shift() removes the first element
• Loops are commonly used to work with arrays

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🛠 Tools Used

• JavaScript (Node.js)
• Visual Studio Code
• Git & GitHub
• GitHub Codespaces

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🔁 Daily Routine

1. Learn concepts
2. Write programs
3. Run code using Node
4. Fix errors
5. Commit & push to GitHub

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📈 Learning Progress

graph TD
    D1["Day 1<br/>Variables & Data Types ✅"]
    D2["Day 2<br/>Conditions if/else ✅"]
    D3["Day 3<br/>Loops ✅"]
    D4["Day 4<br/>Functions ✅"]
    D5["Day 5<br/>Arrays ✅"]
    D6["Day 6<br/>Objects ✅"]
    D7["Day 7<br/>Arrays of objrct + real practice ⏳"]

    D1 --> D2
    D2 --> D3
    D3 --> D4
    D4 --> D5
    D5 --> D6
    D6 --> D7

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Consistency over speed. Learning by doing.

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