js 有参数的方法

// 必需参数
function greet(name) {
    console.log(`Hello, ${name}!`);
}
greet('Alice'); // 输出: Hello, Alice!

// 可选参数和默认参数
function greetWithName(name = 'Guest') {
    console.log(`Hello, ${name}!`);
}
greetWithName(); // 输出: Hello, Guest!
greetWithName('Bob'); // 输出: Hello, Bob!

// 剩余参数
function logNumbers(...numbers) {
    numbers.forEach((number, index) => {
        console.log(`Number ${index + 1}: ${number}`);
    });
}
logNumbers(1, 2, 3, 4); 
// 输出:
// Number 1: 1
// Number 2: 2
// Number 3: 3
// Number 4: 4

// 结合使用参数
function createProfile(firstName, lastName, age = 30, hobbies = []) {
    return {
        firstName,
        lastName,
        age,
        hobbies
    };
}
const profile = createProfile('John', 'Doe', 25, ['reading', 'swimming']);
console.log(profile);
// 输出: { firstName: 'John', lastName: 'Doe', age: 25, hobbies: ['reading', 'swimming'] }