campus_activity_system/static/js/main.js

document.getElementById('registerForm').addEventListener('submit', async function (event) {
    event.preventDefault();

    const form = document.getElementById('registerForm');
    const formData = new FormData(form);

    const response = await fetch('/register', {
        method: 'POST',
        body: formData,
    });

    const result = await response.json();

    if (response.ok) {
        document.getElementById('message').innerText = '注册成功！';
        document.getElementById('message').style.color = 'green';
    } else {
        document.getElementById('message').innerText = `注册失败: ${result.error}`;
        document.getElementById('message').style.color = 'red';
    }
});