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I'm moving from AntD to MaterialUI and can't figure out how to easily implement form validation AND form submission without reloading the whole page.
As an example, upon clicking "sign in" the whole page reloads, which isn't a good idea with an SPA app.
I can bypass that by moving the handleFunction from the element to the element's onClick function and removing the type="submit" from the Button so as not to reload the whole page. That works but it removes the validation and it removes the ability for the user to click "Enter" to submit the form.
Any idea how to achieve this? Below is what I have so far which works but without form validation and without being able to click 'enter' to submit the form:
return (
<Container ponent="main" maxWidth="xs">
<CssBaseline/>
<div className={classes.paper}>
<Avatar className={classes.avatar}>
<LockOutlinedIcon/>
</Avatar>
<Typography ponent="h1" variant="h5">
Sign in
</Typography>
<form className={classes.form}>
<TextField
variant="outlined"
margin="normal"
required
fullWidth
id="email"
label="Email Address"
name="email"
autoComplete="email"
autoFocus
errorMessages={['this field is required', 'email is not valid']}
onInput={e => setEmail(e.target.value)}
/>
<TextField
variant="outlined"
margin="normal"
required
fullWidth
name="password"
label="Password"
type="password"
id="password"
autoComplete="current-password"
onInput={e => setPassword(e.target.value)}
/>
<FormControlLabel
control={<Checkbox value="remember" color="primary"/>}
label="Remember me"
/>
<Button
fullWidth
variant="contained"
color="primary"
className={classes.submit}
onClick={onFinish}
>
Sign In
</Button>
<Grid container>
<Grid item xs>
<Link to={"/forgotpassword1"} variant="body2">
Forgot password?
</Link>
</Grid>
<Grid item>
<Link to={"/register"} variant="body2">
{"Don't have an account? Sign Up"}
</Link>
</Grid>
</Grid>
</form>
</div>
</Container>
);
I'm moving from AntD to MaterialUI and can't figure out how to easily implement form validation AND form submission without reloading the whole page.
As an example, upon clicking "sign in" the whole page reloads, which isn't a good idea with an SPA app.
I can bypass that by moving the handleFunction from the element to the element's onClick function and removing the type="submit" from the Button so as not to reload the whole page. That works but it removes the validation and it removes the ability for the user to click "Enter" to submit the form.
Any idea how to achieve this? Below is what I have so far which works but without form validation and without being able to click 'enter' to submit the form:
return (
<Container ponent="main" maxWidth="xs">
<CssBaseline/>
<div className={classes.paper}>
<Avatar className={classes.avatar}>
<LockOutlinedIcon/>
</Avatar>
<Typography ponent="h1" variant="h5">
Sign in
</Typography>
<form className={classes.form}>
<TextField
variant="outlined"
margin="normal"
required
fullWidth
id="email"
label="Email Address"
name="email"
autoComplete="email"
autoFocus
errorMessages={['this field is required', 'email is not valid']}
onInput={e => setEmail(e.target.value)}
/>
<TextField
variant="outlined"
margin="normal"
required
fullWidth
name="password"
label="Password"
type="password"
id="password"
autoComplete="current-password"
onInput={e => setPassword(e.target.value)}
/>
<FormControlLabel
control={<Checkbox value="remember" color="primary"/>}
label="Remember me"
/>
<Button
fullWidth
variant="contained"
color="primary"
className={classes.submit}
onClick={onFinish}
>
Sign In
</Button>
<Grid container>
<Grid item xs>
<Link to={"/forgotpassword1"} variant="body2">
Forgot password?
</Link>
</Grid>
<Grid item>
<Link to={"/register"} variant="body2">
{"Don't have an account? Sign Up"}
</Link>
</Grid>
</Grid>
</form>
</div>
</Container>
);
3 Answers
Reset to default 2You can try it:
...
export default function SignIn() {
...
const [email, setEmail] = React.useState("");
const [password, setPassword] = React.useState("");
const [emailErrorText, setEmailErrorText] = React.useState("");
const [passwordErrorText, setPasswordErrorText] = React.useState("");
const onSubmit = e => {
e.preventDefault();
if (!email) {
setEmailErrorText("Please enter email");
} else {
setEmailErrorText("");
}
if (!password) {
setPasswordErrorText("Please enter password");
} else {
setPasswordErrorText("");
}
};
return (
<Container ponent="main" maxWidth="xs">
<CssBaseline />
<div className={classes.paper}>
<Typography ponent="h1" variant="h5">
Sign in
</Typography>
<form className={classes.form} noValidate>
<TextField
variant="outlined"
margin="normal"
required
type="email"
fullWidth
id="email"
label="Email Address"
name="email"
autoComplete="email"
autoFocus
value={email}
error={!!emailErrorText}
helperText={emailErrorText}
onChange={e => setEmail(e.target.value)}
/>
<TextField
variant="outlined"
margin="normal"
required
fullWidth
name="password"
label="Password"
type="password"
id="password"
autoComplete="current-password"
value={password}
error={!!passwordErrorText}
helperText={passwordErrorText}
onChange={e => setPassword(e.target.value)}
/>
<FormControlLabel
control={<Checkbox value="remember" color="primary" />}
label="Remember me"
/>
<Button
type="submit"
fullWidth
variant="contained"
color="primary"
className={classes.submit}
onClick={onSubmit}
>
Sign In
</Button>
<Grid container>
<Grid item xs>
<Link href="#" variant="body2">
Forgot password?
</Link>
</Grid>
<Grid item>
<Link href="#" variant="body2">
{"Don't have an account? Sign Up"}
</Link>
</Grid>
</Grid>
</form>
</div>
<Box mt={8}>
<Copyright />
</Box>
</Container>
);
}We can achieve this by adding preventDefault while onSubmit.
handleSubmit:
const handleSubmit = e => {
e.preventDefault();
console.log("submit");
};
onSubmit:
<form className={classes.form} noValidate onSubmit={handleSubmit}>
Check the updated code in codesandbox
Register Card import React from 'react';
import { withRouter } from 'react-router-dom'
import { Grid, Paper, Avatar, TextField, Button } from '@material-ui/core'
class Register extends React.Component {
state = { username: "", password: "", confirmPassword: "", location: "", phonenumber: "", email: "" };
handleClickSignIn()
{
this.props.history.push("/Login");
}
validateEmail() {
console.log("Validate Email fun enter")
// var re = /\S+@\S+\.\S+/;
// return re.test(email);
if (this.state.email === "") {
alert("Plsease Enter Validate number");
}
}
validateNumber() {
if (this.state.phonenumber < 10) { alert("Please enter your phone number"); }
}
validateUsername() {
if (this.state.username === "") {
alert("Please Enter username");
return false
}
}
validatePassword() {
if (this.state.password < 6) { alert("Password must be at least 6 characters long."); }
}
validateLocation() {
if (this.state.location ==="") { alert("Please enter your location "); }
}
onSubmit() {
// this.validateUsername();
var un = this.validateUsername();
if (un ===false) {
return
}
// this.validatePassword();
// this.validateEmail();
// this.validateNumber();
// this.validateLocation();
console.log(this.state.username, this.state.password);
console.log(this.state.email);
console.log(this.state.confirmPassword);
console.log(this.state.location);
console.log(this.state.phonenumber);
}
render() {
const paperstyle = { padding: 30, height:'100', width: 350, margin: '20px auto' }
const avatarStyle = { backgroundColor: '#00adb5' }
const headerstyle = { margin: '10px 0' }
const btstyle = { margin: '10px 0' }
const ttstyle={margin:'5px 0'}
// const FormControlLabel = {fontSize:'5'}
return (
<Grid align='center' container
spacing={0}
direction="column"
alignItems="center"
justify="center"
style={{ minHeight: '100vh' }}>
<Paper elevation={10} style={paperstyle}>
<Avatar style={avatarStyle} > G</Avatar>
<h1 style={headerstyle}>GILGAL</h1>
<h2>Get Started Now</h2>
<TextField label='Name' fullWidth required style={ttstyle}
onChange={event => {
this.setState({username: event.target.value })
}}
/>
<TextField fullWidth label='Email ' style={ttstyle}
onChange={
event => {
this.setState
(
{
email: event.target.value
})
}} />
<TextField label='Password' type='password' fullWidth required style={ttstyle}
onChange={
event => { this.setState({ password: event.target.value }) }
}
/>
<TextField label='Confirm Password' type='password' fullWidth required style={ttstyle}
onChange={
event => { this.setState({ confirmPassword: event.target.value }) }
}
/>
<TextField label='Phonenumber' fullWidth required style={ttstyle}
onChange={
event => { this.setState({ phonenumber: event.target.value }) }
}
/>
<TextField label='Location' fullWidth style={ttstyle}
onChange={
event => { this.setState({ location: event.target.value }) }
}
/>
<input type="checkbox" id="agree" style={btstyle} /><label htmlFor="agree"> I agree to the website's <b>Privacy Policy & Terms and condition</b></label>
<Button type='submit' onClick={this.onSubmit.bind(this)} color='primary' variant="contained" fullWidth style={btstyle}>Register</Button>
<div><p > Already have an acount?
< a href onClick={this.handleClickSignIn.bind(this)} >Log in</a>
</p></div>
</Paper>
</Grid>
);
}
}
export default withRouter(Register)
本文标签： javascriptForm submit and validation with MaterialUI amp ReactJSStack Overflow
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