React アクセシビリティ ガイド: フロントエンド アプリケーションのアクセシビリティを確保する方法

import React from 'react';

function App() {
  return (
    <div>
      <header>
        <h1>网站标题</h1>
      </header>
      <nav>
        <ul>
          <li>首页</li>
          <li>产品</li>
          <li>关于我们</li>
        </ul>
      </nav>
      <main>
        <h2>欢迎来到我们的网站</h2>
        <p>这是一个关于我们的网站的描述。</p>
      </main>
      <footer>
        <p>版权所有 © 2021。</p>
      </footer>
    </div>
  );
}

export default App;

import React, { useState } from 'react';

function LoginForm() {
  const [username, setUsername] = useState('');
  const [password, setPassword] = useState('');

  const handleUsernameChange = (e) => {
    setUsername(e.target.value);
  };

  const handlePasswordChange = (e) => {
    setPassword(e.target.value);
  };

  return (
    <div>
      <label htmlFor="username-input">用户名:</label>
      <input
        id="username-input"
        type="text"
        value={username}
        onChange={handleUsernameChange}
      />

      <label htmlFor="password-input">密码:</label>
      <input
        id="password-input"
        type="password"
        value={password}
        onChange={handlePasswordChange}
      />

      <button type="submit">登录</button>
    </div>
  );
}

export default LoginForm;

import React, { useState } from 'react';

function SignupForm() {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const [errorMessage, setErrorMessage] = useState('');

  const handleEmailChange = (e) => {
    setEmail(e.target.value);
  };

  const handlePasswordChange = (e) => {
    setPassword(e.target.value);
  };

  const handleSignup = () => {
    // 执行注册逻辑，并处理错误
    if (password.length < 6) {
      setErrorMessage('密码至少需要6位字符');
    } else {
      setErrorMessage('');
      // 注册成功的逻辑
    }
  };

  return (
    <div>
      {errorMessage && <p>{errorMessage}</p>}

      <label htmlFor="email-input">电子邮件:</label>
      <input
        id="email-input"
        type="email"
        value={email}
        onChange={handleEmailChange}
      />

      <label htmlFor="password-input">密码:</label>
      <input
        id="password-input"
        type="password"
        value={password}
        onChange={handlePasswordChange}
      />

      <button type="button" onClick={handleSignup} aria-label="注册按钮">注册</button>
    </div>
  );
}

export default SignupForm;