pattern="[a-z0-9._%+-]+@[a-z0-9.-]+.[a-z]{2,3}$"import React from 'react';
import {sendFormData} from '../services/';
class Signup extends React.Component{
constructor(props){
super(props);
this.state = {
isDisabled:true
}
this.submitForm = this.submitForm.bind(this);
}
validateEmail(email){
const pattern = /[a-zA-Z0-9]+[.]?([a-zA-Z0-9]+)?[@][a-z]{3,9}[.][a-z]{2,5}/g;
const result = pattern.test(email);
if(result===true){
this.setState({
emailError:false,
email:email
})
} else{
this.setState({
emailError:true
})
}
}
handleChange(e){
const target = e.target;
const value = target.type === 'checkbox' ? target.checked : target.value;
const name = target.name;
this.setState({
[name]: value
});
if(e.target.name==='firstname'){
if(e.target.value==='' || e.target.value===null ){
this.setState({
firstnameError:true
})
} else {
this.setState({
firstnameError:false,
firstName:e.target.value
})
}
}
if(e.target.name==='lastname'){
if(e.target.value==='' || e.target.value===null){
this.setState({
lastnameError:true
})
} else {
this.setState({
lastnameError:false,
lastName:e.target.value
})
}
}
if(e.target.name==='email'){
this.validateEmail(e.target.value);
}
if(e.target.name==='password'){
if(e.target.value==='' || e.target.value===null){
this.setState({
passwordError:true
})
} else {
this.setState({
passwordError:false,
password:e.target.value
})
}
}
if(this.state.firstnameError===false && this.state.lastnameError===false &&
this.state.emailError===false && this.state.passwordError===false){
this.setState({
isDisabled:false
})
}
}
submitForm(e){
e.preventDefault();
const data = {
firstName: this.state.firstName,
lastName: this.state.lastName,
email: this.state.email,
password: this.state.password
}
sendFormData(data).then(res=>{
if(res.status===200){
alert(res.data);
this.props.history.push('/');
}else{
}
});
}
render(){
return(
<div className="container">
<div className="card card-login mx-auto mt-5">
<div className="card-header">Register here</div>
<div className="card-body">
<form id="signup-form">
<div className="form-group">
<div className="form-label-group">
<input type="text" id="firstname" name="firstname" className="form-control" placeholder="Enter firstname" onChange={(e)=>{this.handleChange(e)}} />
<label htmlFor="firstname">firstname</label>
{this.state.firstnameError ? <span style={{color: "red"}}>Please Enter some value</span> : ''}
</div>
</div>
<div className="form-group">
<div className="form-label-group">
<input type="text" id="lastname" name="lastname" className="form-control" placeholder="Enter lastname" onChange={(e)=>{this.handleChange(e)}} />
<label htmlFor="lastname">lastname</label>
{this.state.lastnameError ? <span style={{color: "red"}}>Please Enter some value</span> : ''}
</div>
</div>
<div className="form-group">
<div className="form-label-group">
<input type="email" id="email" name="email" className="form-control" placeholder="Enter your email" onChange={(e)=>{this.handleChange(e)}} />
<label htmlFor="email">email</label>
{this.state.emailError ? <span style={{color: "red"}}>Please Enter valid email address</span> : ''}
</div>
</div>
<div className="form-group">
<div className="form-label-group">
<input type="password" id="password" name="password" className="form-control" placeholder="Password" onChange={(e)=>{this.handleChange(e)}} />
<label htmlFor="password">Password</label>
{this.state.passwordError ? <span style={{color: "red"}}>Please enter some value</span> : ''}
</div>
</div>
<button className="btn btn-primary btn-block" disabled={this.state.isDisabled} onClick={this.submitForm}>Signup</button>
</form>
</div>
</div>
</div>
);
}
}
export default Signup;
class Test extends React.Component {
constructor(props){
super(props);
this.state = {
fields: {},
errors: {}
}
}
handleValidation(){
let fields = this.state.fields;
let errors = {};
let formIsValid = true;
//Name
if(!fields["name"]){
formIsValid = false;
errors["name"] = "Cannot be empty";
}
if(typeof fields["name"] !== "undefined"){
if(!fields["name"].match(/^[a-zA-Z]+$/)){
formIsValid = false;
errors["name"] = "Only letters";
}
}
//Email
if(!fields["email"]){
formIsValid = false;
errors["email"] = "Cannot be empty";
}
if(typeof fields["email"] !== "undefined"){
let lastAtPos = fields["email"].lastIndexOf('@');
let lastDotPos = fields["email"].lastIndexOf('.');
if (!(lastAtPos < lastDotPos && lastAtPos > 0 && fields["email"].indexOf('@@') == -1 && lastDotPos > 2 && (fields["email"].length - lastDotPos) > 2)) {
formIsValid = false;
errors["email"] = "Email is not valid";
}
}
this.setState({errors: errors});
return formIsValid;
}
contactSubmit(e){
e.preventDefault();
if(this.handleValidation()){
alert("Form submitted");
}else{
alert("Form has errors.")
}
}
handleChange(field, e){
let fields = this.state.fields;
fields[field] = e.target.value;
this.setState({fields});
}
render(){
return (
<div>
<form name="contactform" className="contactform" onSubmit= {this.contactSubmit.bind(this)}>
<div className="col-md-6">
<fieldset>
<input ref="name" type="text" size="30" placeholder="Name" onChange={this.handleChange.bind(this, "name")} value={this.state.fields["name"]}/>
<span style={{color: "red"}}>{this.state.errors["name"]}</span>
<br/>
<input refs="email" type="text" size="30" placeholder="Email" onChange={this.handleChange.bind(this, "email")} value={this.state.fields["email"]}/>
<span style={{color: "red"}}>{this.state.errors["email"]}</span>
<br/>
<input refs="phone" type="text" size="30" placeholder="Phone" onChange={this.handleChange.bind(this, "phone")} value={this.state.fields["phone"]}/>
<br/>
<input refs="address" type="text" size="30" placeholder="Address" onChange={this.handleChange.bind(this, "address")} value={this.state.fields["address"]}/>
<br/>
</fieldset>
</div>
</form>
</div>
)
}
}
React.render(<Test />, document.getElementById('container'));