从Node.JS中的参数使用类函数

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

console.log(add(2, 3)); // 输出 5

function greet(name = 'Guest') {
  console.log(`Hello, ${name}!`);
}

greet(); // 输出 "Hello, Guest!"
greet('Alice'); // 输出 "Hello, Alice!"

function sum(...nums) {
  let total = 0;
  for (let num of nums) {
    total += num;
  }
  return total;
}

console.log(sum(1, 2, 3)); // 输出 6
console.log(sum(1, 2, 3, 4, 5)); // 输出 15

function fetchData(options) {
  const { url, method = 'GET', headers = {} } = options;
  // 使用配置信息发送网络请求
}

fetchData({ url: 'https://example.com/api' });
fetchData({ url: 'https://example.com/api', method: 'POST' });
fetchData({ url: 'https://example.com/api', headers: { 'Authorization': 'Bearer token' } });