如何在javascript函数中发送默认值

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

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

function createUser(username = 'Anonymous', age = 18, isAdmin = false) {
    return {
        username,
        age,
        isAdmin
    };
}

console.log(createUser()); 
// 输出: { username: 'Anonymous', age: 18, isAdmin: false }

console.log(createUser('JohnDoe', 25, true)); 
// 输出: { username: 'JohnDoe', age: 25, isAdmin: true }

function configure(options = {}) {
    const { host = 'localhost', port = 8080, secure = false } = options;
    console.log(`Host: ${host}, Port: ${port}, Secure: ${secure}`);
}

configure(); 
// 输出: Host: localhost, Port: 8080, Secure: false

configure({ port: 3000 }); 
// 输出: Host: localhost, Port: 3000, Secure: false

configure({ host: 'example.com', secure: true }); 
// 输出: Host: example.com, Port: 8080, Secure: true

function test(value = 'default') {
    console.log(value);
}

test(undefined); // 输出: default
test(null); // 输出: null
test(0); // 输出: 0
test(false); // 输出: false