用户在Javascipt中填写这两个字段后立即启用登录按钮

// 获取输入框和登录按钮的DOM元素
const usernameInput = document.getElementById('username');
const passwordInput = document.getElementById('password');
const loginButton = document.getElementById('login-button');

// 监听输入框的变化事件
usernameInput.addEventListener('input', toggleLoginButton);
passwordInput.addEventListener('input', toggleLoginButton);

// 根据输入框的内容判断是否启用登录按钮
function toggleLoginButton() {
  const username = usernameInput.value.trim();
  const password = passwordInput.value.trim();

  if (username !== '' && password !== '') {
    loginButton.disabled = false; // 启用登录按钮
  } else {
    loginButton.disabled = true; // 禁用登录按钮
  }
}