handling events in react - javascript

I need to make a login page, when I click the submit button this should be navigated to Dashboard page. The below is my code, what is the problem in it. When I give details in the login page and click on login, the details vanishes and not navigated to dashboard.
import React, { Component, useState } from "react";
import axios from 'axios';
import { setUserSession } from '../utils/common';
function Login(props) {
const username = useFormInput('');
const password = useFormInput('');
const [error, setError] = useState(null);
const [loading, setLoading] = useState(false);
// handle button click of login form
const handleLogin = () => {
props.history.push('/dashboard');
}
return (
<form>
<h3>Sign In</h3>
<div className="form-group">
<label>Email address</label>
<input type="email" className="form-control" placeholder="Enter email" />
</div>
<div className="form-group">
<label>Password</label>
<input type="password" className="form-control" placeholder="Enter password" />
</div>
<div className="form-group">
<div className="custom-control custom-checkbox">
<input type="checkbox" className="custom-control-input" id="customCheck1" />
<label className="custom-control-label" htmlFor="customCheck1">Remember me</label>
</div>
</div>
{error && <><small style={{ color: 'red' }}>{error}</small><br /></>}<br />
<input type="button" className="btn btn-primary btn-block" value={loading ? 'Loading...' : 'Sign-in'} onClick={handleLogin} disabled={loading} /><br />
<p className="forgot-password text-right">
Forgot password?
</p>
</form>
);
}
const useFormInput = initialValue => {
const [value, setValue] = useState(initialValue);
const handleChange = e => {
setValue(e.target.value);
}
return {
value,
onChange: handleChange
}
}
export default Login;

Do you have a route defined for /dashboard. Everything worked me in code sandbox without react router setup. Psuedo code shown below
<Switch>
<Route path="/dashboard">
<DashboardComponent />
</Route>
</Switch>

Related

FirebaseError: Firebase: Error (auth/invalid-email)

I am making a react project and when I am trying to sign up through email and password using firebase authentication then this 👇your text error is showing
This is the error I am getting
This is the whole code:
import React,{useState} from 'react';
import { Link, useNavigate } from 'react-router-dom';
import Layout from '../components/layout/Layout';
import {BsFillEyeFill} from "react-icons/bs";
import { getAuth, createUserWithEmailAndPassword , updateProfile} from "firebase/auth";
import {db} from "../firebase.config"
const SignUp = () => {
// to hide password
const [showPassword, setShowPassword] = useState(false);
const [formData, setFormData] = useState({
email:"",
name: "",
password: "",
})
const {name, email, password} = formData;
const navigate = useNavigate();
const onChange = (e) => {
setFormData((prevState) => ({
...prevState,
[e.target.id]: e.target.value,
}));
};
This is my signUp function
const onSubmitHandler= async (e) =>{
e.preventDefault();
try{
const auth= getAuth()
const userCredential = await createUserWithEmailAndPassword(auth,email,password);
const user = userCredential.user
updateProfile(auth.currentUser,{displayName: name})
navigate("/")
alert("Signup Success")
}catch(error){
console.log(error);
}
}
return (
<Layout>
<div className="d-flex align-items-center justify-content-center w-100 mt-5 mb-5">
<form className='bg-light p-4 rounded-3 border border-dark border-3' onSubmit={onSubmitHandler}>
<h4 className='bg-dark p-2 mt-2 text-light rounded-2 text-center'>Sign Up</h4>
<div className="mb-3">
<label htmlFor="exampleInputEmail1" className="form-label">Enter Name</label>
<input
type="text"
defaultValue={name}
id="name"
onChange={onChange}
className="form-control"
aria-describedby="nameHelp"
/>
</div>
<div className="mb-3">
<label htmlFor="exampleInputEmail1" className="form-label">Email address</label>
<input
type="email"
defaultValue={email}
onChange={onchange}
className="form-control"
id="email"
aria-describedby="emailHelp"
/>
<div id="emailHelp" className="form-text">We'll never share your email with anyone else.</div>
</div>
<div className="mb-3">
<label htmlFor="exampleInputPassword1" className="form-label">Password</label>
<input
type={showPassword? "text" : "password"}
defaultValue={password}
onChange={onchange}
className="form-control"
id="password"
/>
<span >Show Password <BsFillEyeFill
className='text-primary ms-2'
style={{cursor: "pointer"}}
onClick={()=> setShowPassword((prevState)=> !prevState)}
/></span>
</div>
<button
type="submit"
className="btn btn-primary">Sign Up</button>
<div>
<h6>Login with Google</h6>
<span>Already User?</span> <Link to="/signin">Login</Link>
</div>
</form>
</div>
</Layout>
)
}
export default SignUp
After going through firebase documentation I have tried various emails but still it is showing the same error.
This is the email I had been using for signUp.
and I tried different emails as well like: piyush#gmail.com, and my personal email too but still it is showing the same error
This is the error message for your error
auth/invalid-email:
The provided value for the email user property is invalid. It must be a string email address.
Check to make sure your onSubmitHandler is within scope of your formData state, because your email and password might be undefined.
Your code has 2 issues,
1: Check the spelling of onChange on email and password field.
2: Change defaultValue to value
Below is the working code:
import React, { useState } from 'react';
import { Link, useNavigate } from 'react-router-dom';
import { BsFillEyeFill } from 'react-icons/bs';
import {
getAuth,
createUserWithEmailAndPassword,
updateProfile,
} from 'firebase/auth';
const Signup = () => {
const [showPassword, setShowPassword] = useState(false);
const [formData, setFormData] = useState({
email: '',
name: '',
password: '',
});
const { name, email, password } = formData;
const navigate = useNavigate();
const onChange = (e: any) => {
setFormData((prevState) => ({
...prevState,
[e.target.id]: e.target.value,
}));
};
const onSubmitHandler = async (e) => {
e.preventDefault();
console.log('email is ', email, password);
try {
const auth = getAuth();
const userCredential = await createUserWithEmailAndPassword(
auth,
email,
password,
);
const user = userCredential.user;
alert('Signup Success');
} catch (error) {
console.log(error);
}
};
return (
<div className="d-flex align-items-center justify-content-center w-100 mt-5 mb-5">
<form
className="bg-light p-4 rounded-3 border border-dark border-3"
onSubmit={onSubmitHandler}
>
<h4 className="bg-dark p-2 mt-2 text-light rounded-2 text-center">
Sign Up
</h4>
<div className="mb-3">
<label htmlFor="exampleInputEmail1" className="form-label">
Enter Name
</label>
<input
type="text"
value={name}
id="name"
onChange={onChange}
className="form-control"
aria-describedby="nameHelp"
/>
</div>
<div className="mb-3">
<label htmlFor="exampleInputEmail1" className="form-label">
Email address
</label>
<input
type="email"
value={email}
onChange={onChange}
className="form-control"
id="email"
aria-describedby="emailHelp"
/>
<div id="emailHelp" className="form-text">
We'll never share your email with anyone else.
</div>
</div>
<div className="mb-3">
<label htmlFor="exampleInputPassword1" className="form-label">
Password
</label>
<input
type={showPassword ? 'text' : 'password'}
value={password}
onChange={onChange}
className="form-control"
id="password"
/>
<span>
Show Password{' '}
<BsFillEyeFill
className="text-primary ms-2"
style={{ cursor: 'pointer' }}
onClick={() => setShowPassword((prevState) => !prevState)}
/>
</span>
</div>
<button type="submit" className="btn btn-primary">
Sign Up
</button>
<div>
<h6>Login with Google</h6>
<span>Already User?</span> <Link to="/signin">Login</Link>
</div>
</form>
</div>
);
};
export default Signup;

I want to render a background image for only this page not whole application but i am not able to do that i am still a new bee

this is my code for login page but i am not able to set bg image for this page i can do that by setting to app component which sets to whole application if i do the same to this then only the component is getting the background image not the whole page i am doing it by importing image
import React, { useState } from "react";
import "./Loginp.css";
import axios from "axios";
import bgimg from "../../assets/Loginimage.jpg";
function Loginp() {
const [usernamed, setusername] = useState("");
const [passwordd, setpassword] = useState("");
const check = false;
function clicki() {
console.log("clicked");
const dat = {
username: usernamed,
password: passwordd,
};
axios.post("http://localhost:7000/login", dat).then((resp) => {
check = resp.data;
});
if (check) {
alert("User name already exists");
}
}
return (
<div
id="loginform"
style={{
backgroundImage: bgimg,
height: 100,
marginTop: 10,
textAlign: "center",
}}
>
<FormHeader title="Login" />
{/* <Form /> */}
<div>
<div class="row">
<label>Username</label>
<input
type="text"
placeholder="Enter your username"
onChange={(e) => {
setusername(e.target.value);
}}
/>
</div>
<div class="row">
<label>Password</label>
<input
type="text"
placeholder="Enter your password"
onChange={(e) => {
setpassword(e.target.value);
}}
/>
</div>
<div id="button" class="row">
<button onClick={clicki}>Log in</button>
</div>
</div>
</div>
);
}
const FormHeader = (props) => <h2 id="headerTitle">{props.title}</h2>;
export default Loginp;
try this.
backgroundImage: url(${bgimg})

Why is my useState not working (error in console)?

I have react components:
WelcomePage.jsx
import { useState } from "react";
import SignUpPage from "./SignUpPage";
function WelcomePage() {
const [signUp, toSignUp] = useState(false);
function signUpClick() {
toSignUp(true);
}
return (
<div>
{signUp ? (
<SignUpPage isOpen={toSignUp} back={toSignUp} />
) : (
<div className="Welcome_page__container animate__animated animate__fadeIn">
<h1 className="Welcome_page__title">Welcome to Hotel Review </h1>
<h3 className="Welcome_page__subtitle">Sign in :</h3>
<div className="Welcome_page__wrapper">
<label className="Welcome_page__input-title" htmlFor="welcome_mail">
E-mail:
</label>
<input
value={inputEmail}
onInput={(e) => setInputEmail(e.target.value)}
className="Welcome_page__input"
id="welcome_mail"
type="email"
placeholder="Your e-mail..."
/>
<label className="Welcome_page__input-title" htmlFor="welcome_pass">
Password:
</label>
<input
value={inputPass}
onInput={(e) => setInputPass(e.target.value)}
className="Welcome_page__input"
id="welcome_pass"
type="password"
placeholder="Your password..."
/>
<button className="Welcome_page__btn" onClick={loginClick}>
Login
</button>
<button className="Welcome_page__btn" onClick={signUpClick}>
Sign Up
</button>
</div>
</div>
)}
</div>
);
}
export default WelcomePage;
SignUpPage.jsx
import { useState } from "react";
import { Hotels } from "./Hotels";
function SignUpPage(props) {
const { isOpen, back } = props;
const [isSignUp, setSignUp] = useState(false);
return (
<div>
{isSignUp ? (
<Hotels />
) : (
<div className="Welcome_page__container animate__animated animate__fadeIn">
<button onClick={back(false)}>Back...</button>
<h1 className="Welcome_page__title">Welcome to Hotel Review </h1>
<h3 className="Welcome_page__subtitle">Sign up :</h3>
<div className="Welcome_page__wrapper">
<label className="Welcome_page__input-title" htmlFor="welcome_mail">
E-mail:
</label>
<input
value={inputEmail}
onInput={(e) => setInputEmail(e.target.value)}
className="Welcome_page__input"
id="welcome_mail"
type="email"
placeholder="Your e-mail..."
/>
<label className="Welcome_page__input-title" htmlFor="welcome_pass">
Password:
</label>
<input
value={inputPass}
onInput={(e) => setInputPass(e.target.value)}
className="Welcome_page__input"
id="welcome_pass"
type="password"
placeholder="Your password..."
/>
<label
className="Welcome_page__input-title"
htmlFor="welcome_pass"
></label>
<input
value={inputPass2}
onInput={(e) => setInputPass2(e.target.value)}
className="Welcome_page__input"
id="welcome_pass_repeat"
type="password"
placeholder="Repeat password..."
/>
<button className="Welcome_page__btn_2">Sign Up</button>
</div>
</div>
)}
</div>
);
}
export default SignUpPage;
When I click on Back in the SignUpPage component I get an error -
It is necessary that after clicking on back there is a return to WelcomePage.jsx
Maybe I'm not using or passing useState in SignUpPage.jsx
I read about the error on the Internet, they say that you need to useEffect (), but I doubt that this is the problem ...
Here is the error:
<button onClick={back(false)}>Back...</button>
You are basically calling the back function immediately causing the WelcomePage component to update while rendering the SignUpPage component.
You should do this:
<button onClick={() => back(false)}>Back...</button>
By doing this you are going to execute the back function only when you click on the button

react-modal - onChange on input is not updating state

I hope you will be able to help me with an answer to my question. I am using react-modal and inside the modal I have an input where users can write an email. When writing the email it should update the state but that is not happening.
What is happening right now is that the model re-renders every time I write a new letter and that results in the state only updating with the first letter I typed and then focus is lost.
I am using react hooks. I know that changes a bit.
My code looks like the following:
import React, { useState, useContext } from 'react';
import AppContext from '../../AppContext.jsx';
import GroupContext from './GroupContext.jsx';
import Section from '../../Elements/PageContent/Section.jsx';
import PageTitle from '../../Elements/PageContent/PageTitle.jsx';
import WhiteContainer from '../../Elements/PageContent/WhiteContainer.jsx';
import { Form, FormGroup, FormSection, FormSection_Split, Label, Input, Select, Submit } from '../../Elements/Forms/FormCollection.jsx';
import { MusicGenres } from '../../Elements/Forms/MusicGenres.jsx';
import { Years } from '../../Elements/Forms/Years.jsx';
import { H3 } from '../../Elements/Fonts/FontCollection.jsx';
import { Icon } from '../../Elements/Image/ImageUtil.jsx';
import ReactModal from "react-modal";
import { useModal } from "react-modal-hook";
export default function Groups(props) {
const AC = useContext(AppContext);
const GC = useContext(GroupContext);
const [groupName, setGroupName] = useState("");
const [groupDescription, setGroupDescription] = useState("");
const [memberEmail, setMemberEmail] = useState("");
const [groupMembers, setGroupMembers] = useState([]);
const [showModal, hideModal] = useModal(() => (
<ReactModal className="DialogPopup" isOpen ariaHideApp={false}>
<Form>
<FormGroup>
<FormSection>
<Label htmlFor="memberEmail" title="Email of your group member:" />
<Input type="email" name="memberEmail" value={memberEmail} onChange={(e) => setMemberEmail(e.target.value)} placeholder="#" />
</FormSection>
</FormGroup>
</Form>
<button onClick={(e) => hideModal()} className="Close" aria-label="Close popup"><Icon iconClass="fal fa-times" /></button>
</ReactModal>
), []);
async function addObjectToGroupMembersArray(e) {
e.preventDefault();
console.log("Adding member");
}
return (
<React.Fragment>
<PageTitle title="Add group" />
<Section>
<Form>
<FormGroup>
<FormSection>
<WhiteContainer>
<Label htmlFor="groupName" title="Group name:" />
<Input type="text" name="groupName" value={groupName} onChange={(e) => setGroupName(e.target.value)} maxLength="60" required />
<span className="CharactersLeft">Characters left: {60 - groupName.length}</span>
</WhiteContainer>
</FormSection>
<FormSection>
<WhiteContainer>
<Label htmlFor="groupDescription" title="Describe your group:" />
<textarea name="groupDescription" id="groupDescription" value={groupDescription} onChange={(e) => setGroupDescription(e.target.value)} maxLength="500"></textarea>
<span className="CharactersLeft">Characters left: {500 - groupDescription.length}</span>
</WhiteContainer>
</FormSection>
<FormSection>
<WhiteContainer>
<Label htmlFor="groupMembers" title="List the emails of your group members?" />
<a href="#" className="AddLink" aria-label="Add member" title="Click to add a member" onClick={(e) => { e.preventDefault(); showModal(); }}>
<Icon iconClass="fal fa-plus" />
</a>
</WhiteContainer>
</FormSection>
<FormSection className="FormSection--Submit">
<Submit text="Create group" />
</FormSection>
</FormGroup>
</Form>
</Section>
</React.Fragment>
);
}
Does anyone of you know why the modal is updating every time I type, resulting in not being able to write anything in the input. Should i use "ref" and if I should, how would I do that?
The onChange method I am using is always working, just not inside react-modal.
I finally figured it out. It's because modal is working a little like the useEffect hook. If i add memberEmail to the bottom of the modal state, then it is working.
const [memberEmail, setMemberEmail] = useState("");
const [showModal, hideModal] = useModal(() => (
<ReactModal className="DialogPopup" isOpen ariaHideApp={false}>
<Form>
<FormGroup>
<FormSection>
<Label htmlFor="memberEmail" title="Email of your group member:" />
<Input type="email" name="memberEmail" value={memberEmail} onChange={(e) => setMemberEmail(e.target.value)} placeholder="#" />
</FormSection>
</FormGroup>
</Form>
<button onClick={(e) => hideModal()} className="Close" aria-label="Close popup"><Icon iconClass="fal fa-times" /></button>
</ReactModal>
), [memberEmail]);
What about creating an external function that you would call in onChange?
something like:
const handleOnChange = (event) => {
setMemberEmail(event.target.value);
}
// then call it in your component
<Input type="email" name="memberEmail" value={memberEmail} onChange={handleOnChange} placeholder="#" />

Cannot read property 'value' of null in ReactJS

I've been trying to console.log these 2 inputs, but can't seem to figure it out, can anyone tell me what I've done wrong?
I keep getting the Cannot read property 'value' of null error
function printInputs() {
let username = document.getElementById('user').value
let password = document.getElementById('pass').value
console.log(username);
console.log(password);
}
function App() {
return (
<div className="App">
<h1>Log In</h1>
<h1>{code}</h1>
<form>
<input className='userInput' id='user' type='text' placeholder='username' /><br />
<input className='userInput' id='pass' type='password' placeholder='password' /><br />
<input className='userSubmit' type='submit' value='Log In' onSubmit={printInputs()} />
</form>
</div>
);
}
onSubmit={printInputs()}
You are trying to call printInputs immediately (before the render function has returned anything so before the inputs are in the page).
You need to pass a function to onSubmit:
onSubmit={printInputs}
That said, this is not the approach to take for getting data from forms in React. See the Forms section of the React guide for the right approach.
The way to write forms in react. Working example demo
function App() {
const [state, setState] = React.useState({ username: "", password: "" });
const handleSubmit = e => {
e.preventDefault();
console.log(state);
};
const handleChange = e => {
setState({
...state,
[e.target.name]: e.target.value
});
};
return (
<div className="App">
<h1>Log In</h1>
<form onSubmit={handleSubmit}>
<input
className="userInput"
name="username"
type="text"
placeholder="username"
onChange={handleChange}
/>
<br />
<input
className="userInput"
name="password"
type="password"
placeholder="password"
onChange={handleChange}
/>
<br />
<input className="userSubmit" type="submit" value="Log In" />
</form>
</div>
);
}
in the first never use real dom to manipulate the dom in
React ,use a state to get de value and the onSumbit is used in Form tag
import React, { useState } from "React";
const App = () => {
const [userName, setUserName] = useState("");
const [password, setPassword] = useState("");
const printInputs = () => {
console.log(userName);
console.log(password);
};
return (
<div className="App">
<h1>Log In</h1>
<form onSubmit={printInputs}>
<input
className="userInput"
id="user"
type="text"
placeholder="username"
onChange={event => setUserName(event.target.value)}
/>
<br />
<input
className="userInput"
id="pass"
type="password"
placeholder="password"
onChange={event => setPassword(event.target.value)}
/>
<br />
<input
className="userSubmit"
type="submit"
value="Log In"/>
</form>
</div>
);
};
export default App;

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