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

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;

- Arrays Use Plurals

productNames
employeeList

- Boolean Naming

isActive
hasAccess
canDelete

- 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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