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Nozibul Islam
Nozibul Islam

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Mastering JavaScript Variable Naming: Best Practices

Why Good Variable Names Matter.

1. Ditch var for Modern Declarations

// Old way (avoid)
var score = 0;

// Modern approach
let userScore = 0; // changeable values
const MAX_SCORE = 100; // constants
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2. Key Naming Principles

- Be Descriptive

Use meaningful names that tell a story
totalPrice > x
userProfile > temp

- Avoid Abbreviations

Use full words
orderStatus > ordSt
employeeName > empNm

- Follow Camel Case

productDescription
orderDetails

- Constants in UPPERCASE

const API_KEY = 'your-key';
const MAX_ATTEMPTS = 5;
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- Arrays Use Plurals

productNames
employeeList

- Boolean Naming

isActive
hasAccess
canDelete
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- Scope-Aware Naming

globalUserCount
localTempVar

Pro Tips

  • Use constby default
  • Declare variables on separate lines
  • Choose names that explain purpose

Clean code starts with thoughtful naming! 🚀

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Let’s dive deeper into the world of software engineering together! I regularly share insights on JavaScript, TypeScript, Node.js, React, Next.js, data structures, algorithms, web development, and much more. Whether you're looking to enhance your skills or collaborate on exciting topics, I’d love to connect and grow with you.

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