js取二级域名页面cookies

// 设置一个二级域名的Cookie
document.cookie = "username=John; domain=subdomain.example.com; path=/";

// 获取当前页面的Cookies
console.log(document.cookie);

// 获取二级域名的Cookies
function getSubdomainCookies(subdomain) {
    const cookies = document.cookie.split(';');
    const subdomainCookies = {};
    cookies.forEach(cookie => {
        const [name, value] = cookie.trim().split('=');
        if (name && value) {
            subdomainCookies[name] = value;
        }
    });
    return subdomainCookies;
}

const subdomain = 'subdomain.example.com';
const subdomainCookies = getSubdomainCookies(subdomain);
console.log(subdomainCookies);

document.cookie = "username=John; domain=subdomain.example.com; path=/; Secure; HttpOnly";