5 Best Practices for JavaScript Naming Conventions

Shravan Meena
2 min readApr 20, 2023

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JavaScript is a popular programming language used for building dynamic and interactive web applications. One of the key aspects of writing maintainable and readable code in JavaScript is following best practices for naming conventions. In this article, we will discuss some of the best practices for naming conventions in JavaScript.

  1. Use descriptive names for variables and functions:

Descriptive names help to make your code more readable and understandable. Use names that describe the purpose or functionality of the variable or function. Avoid using generic names like “temp” or “x” as they don’t provide any context about what the variable or function is used for.

Example:

// Bad naming convention let temp = 10; function x() {}

// Good naming convention let userAge = 10; function calculateSum() {}

  1. Use camelCase for variables and functions:

In JavaScript, camelCase is the most commonly used naming convention for variables and functions. CamelCase is a naming convention where the first word is in lowercase and the subsequent words are in uppercase.

Example:

// Bad naming convention let user_age = 10; function calculate_sum() {}

// Good naming convention let userAge = 10; function calculateSum() {}

  1. Use PascalCase for constructor functions:

In JavaScript, PascalCase is the naming convention used for constructor functions. PascalCase is a naming convention where the first letter of each word is in uppercase.

Example:

// Bad naming convention function user(name, age) {}

// Good naming convention function User(name, age) {}

  1. Use all-caps for constants:

Constants are variables that should not be changed once they are defined. In JavaScript, constants are usually written in all uppercase letters.

Example:

// Bad naming convention const pi = 3.14;

// Good naming convention const PI = 3.14;

  1. Use meaningful names for boolean variables:

Boolean variables are used to store true or false values. Use meaningful names for boolean variables that describe the condition that is being checked.

Example:

// Bad naming convention let isTrue = true;

// Good naming convention let isUserLoggedIn = true;

In conclusion, following good naming conventions is essential to write clean, readable, and maintainable code in JavaScript. By adopting these best practices, you can make your code more understandable for other developers, reduce bugs and make debugging easier, and improve the overall quality of your codebase.

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Shravan Meena
Shravan Meena

Written by Shravan Meena

Writing code is my passion. I firmly believe in the transformative and enhancing power of programming, and how it can improve the lives of those around world.

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