我在 React 项目中有我的index.html页面，如下所示：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Bucard | Digital Business Card</title>
<meta name="title" content="Bucard | Digital Business Card">
<meta name="description" content="Bucard - Description for bucard" />
<meta property="og:title" content="Bucard | Digital Business Card" />
<meta property="og:image" content="http://m.digital-card.co.il/zedka/152/images/icon.png" />
<meta property="og:description" content="Bucard - Description for bucard" />
<meta property="og:url" content="https://bucard.co.il/" />
</head>
<body>
<div id="root"></div>
</body>
</html>
并有我的react-helmet部分，它存在于组件中，其自身路径在url上：
<Helmet>
<title>{"Digital card of " + this.state.card.Name}</title>
<meta name="title" content={"Digital card of " + …这是我在 React js 中的代码的一部分：
export default function Registration() {
const [email, setEmail] = useState(null);
const [password, setPassword] = useState(null);
const [passwordRepeat, setPasswordRepeat] = useState(null);
const [isFieldsOK, setFieldsOK] = useState(false);
useEffect(() => {
if (checkFieldsOK()) {
setFieldsOK(true);
} else {
setFieldsOK(false);
}
}, [checkFieldsOK])
const checkFieldsOK = () => {
return (isEmail(email) && isValidPassword(password) && passwordRepeat === password);
}
}
我有 isFieldsOK 状态，它告诉我我的字段是否有效，并且我希望它“侦听”注册功能中的每个更改。运行此命令后，我收到此警告：
The 'checkFieldsOK' function makes the dependencies of useEffect Hook (at line 34) change on every render. Move it …