js的方法参数列表

function greet(name) {
    console.log('Hello, ' + name);
}

greet(); // 输出 "Hello, undefined"
// 解决方法：在调用时传递参数
greet('Alice'); // 输出 "Hello, Alice"

function add(a, b) {
    if (typeof a !== 'number' || typeof b !== 'number') {
        throw new Error('Both arguments must be numbers');
    }
    return a + b;
}

add('1', 2); // 抛出错误 "Both arguments must be numbers"

function greet(name = 'World') {
    console.log('Hello, ' + name);
}

greet(); // 输出 "Hello, World"
greet('Alice'); // 输出 "Hello, Alice"

function sum(...numbers) {
    return numbers.reduce((total, num) => total + num, 0);
}

sum(1, 2, 3, 4); // 返回 10

function greet({ name, age }) {
    console.log(`Hello, ${name}. You are ${age} years old.`);
}

const person = { name: 'Alice', age: 30 };
greet(person); // 输出 "Hello, Alice. You are 30 years old."