Importance of a Style Guide:

A style guide ensures consistency, readability, and maintainability across your codebase.

Key Style Rules:

1. Variable Naming:

• Use camelCase for variables and functions.
• Use UPPER_SNAKE_CASE for constants.
• Avoid single-character variable names unless meaningful.

Example:

const MAX_HEIGHT = 100;
let userName = "Alice";

2. Braces and Indentation:

• Use two or four spaces for indentation.
• Place opening braces { on the same line as the statement.

Example:

if (isLoggedIn) {
    console.log("Welcome back!");
}

3. Semicolons:

Use semicolons to terminate statements.

4. Use const and let:

Avoid var.

Example:

const user = { name: "Alice" };

Real-Life Use Case:

Using a consistent style guide ensures easier onboarding of new developers in a project and prevents common errors.