[英]Login page verification in reactjs
我想將 angularjs 登錄頁面轉換為 reactjs。 我做了代碼,但我想知道這是否是正確的方法,以及在我完成之前它是否正確。 另外我想添加只能通過身份驗證訪問的儀表板頁面,用戶登錄后將被重定向到儀表板。
$scope.login=function(){
$scope.newuser={
'password':$scope.signinpassword,
'email':$scope.emailid
}
return $http.post('/api/authenticate',$scope.newuser).then(function(response,status){
if(response.data=='redirect'){
$window.location.href="/dashboard";
}else if(response.data=='verifyemail'){
angular.element(document.querySelector('#verifyemailbtn')).click();
}else if(response.data=='Invalid Password'){
window.alert("Incorrect Password");
$scope.error='Failed to authenticate'
}
});
}
我到目前為止翻譯的 reactjs 代碼
class Login extends Component {
constructor(props){
super(props);
this.state={
emailid:'',
password:''
}
}
performLogin = async (event) => {
var body={
"emailid":"this.state.emailid",
"password":"this.state.password"
}
const options = {
method: "POST",
headers: {
"Content-Type": "application/json",
Accept: "application/json"
},
body: body
};
const url = "api/login";
try {
const response = await fetch(url, options);
const result = await response.json();
console.log(`login successful`);
} catch (error) {
console.error("login credentials wrong");
}
};
render() {
return (
<div>
<input type="text"
placeholder="emailid"
onChange = {(event,newValue) => this.setState({emailid:newValue})}
/>
<br/>
<input
type="password"
placeholder="Enter your Password"
onChange = {(event,newValue) => this.setState({password:newValue})}
/>
<br/>
<button type="submit" onClick={(event) => this.performLogin(event)}/>
</div>
);
}
}
export default Login;
您的代碼接近沒問題,但有一些語法問題。
1-您需要為構造函數中的方法綁定“this”
2- 在此.state.emailid 的 performLogin 中刪除雙引號
3-您不需要為每個輸入提供很多功能,您只需使用這樣的一個功能即可處理所有輸入領域。
我重構你的代碼:-)
class Login extends Component { constructor(props){ super(props); this.performLogin = this.performLogin.bind(this) this.handleChange = this.handleChange.bind(this) this.state={ emailid:'', password:'' } } performLogin = async (event) => { const { enteredText } = this.state; var body={ "emailid":this.state.emailid, "password":this.state.password } const options = { method: "POST", headers: { "Content-Type": "application/json", Accept: "application/json" }, body: body }; const url = "api/login"; try { const response = await fetch(url, options); const result = await response.json(); $window.location.href="/dashboard"; } catch (error) { console.error("login credentials wrong"); } }; handleChange(e) { this.setState({[e.target.name]:e.target.value}) } render() { return ( <div> <input type="text" placeholder="emailid" onChange = {handleChange} /> <br/> <input type="password" placeholder="Enter your Password" onChange = {handleChange} /> <br/> <button type="submit" onClick={this.performLogin}/> </div> ); } } export default Login;
對於重定向,您可以使用像React-Router 這樣的庫,或者只是用 $window.location.href="/dashboard" 替換 console.log( login successful
success )
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