JavaScript コードの構造: 読みやすさと保守性のベスト プラクティス

// Function to greet a user
function greet(name) {
  return `Hello, ${name}!`;
}

// Module to handle user interactions
const userModule = {
  greet: function(name) {
    return `Hello, ${name}!`;
  },
  farewell: function(name) {
    return `Goodbye, ${name}!`;
  }
};

console.log(greet("Alice"));
console.log(userModule.farewell("Bob"));

// Good variable names
let userName = "John";
let userAge = 30;

// Good function name
function calculateTotal(price, quantity) {
  return price * quantity;
}

function addNumbers(a, b) {
  return a + b;
}

let result = addNumbers(3, 4);
console.log(result);

let x = 10; // Assignment statement
let y = x + 5; // Expression statement
console.log(y); // Function call statement

// Conditional statement
if (x > 5) {
  console.log("x is greater than 5");
} else {
  console.log("x is 5 or less");
}

// Loop statement
for (let i = 0; i < 5; i++) {
  console.log(i);
}

let a = 10;
let b = 20;
let sum = a + b;
console.log(sum);

let a = 10
let b = 20
let sum = a + b
console.log(sum)

// This is a single-line comment
let x = 10; // Assigning the value 10 to x

/*
This is a multi-line comment.
It can span multiple lines and is useful for explaining complex code.
*/
function addNumbers(a, b) {
  return a + b;
}

/**
 * Adds two numbers.
 * @param {number} a - The first number.
 * @param {number} b - The second number.
 * @returns {number} The sum of the two numbers.
 */
function addNumbers(a, b) {
  return a + b;
}