如何禁用自动填写的已保存用户名/密码

<input type="text" name="username" autocomplete="off" />
<input type="password" name="password" autocomplete="off" />

<form action="login.php" method="post" autocomplete="off">
  <input type="text" name="username" />
  <input type="password" name="password" />
  <input type="submit" value="Login" />
</form>

<TextInput
  autoCompleteType="off"
  placeholder="Username"
  onChangeText={(text) => setUsername(text)}
/>
<TextInput
  autoCompleteType="off"
  secureTextEntry={true}
  placeholder="Password"
  onChangeText={(text) => setPassword(text)}
/>