For dynamically setting state properties for form inputs and keeping them controlled you could do something like this:
const inputs = [
{ name: 'email', type: 'email', placeholder: "Enter your email"},
{ name: 'password', type: 'password', placeholder: "Enter your password"},
{ name: 'passwordConfirm', type: 'password', placeholder: "Confirm your password"},
]
class Form extends Component {
constructor(props){
super(props)
this.state = {} // Notice no explicit state is set in the constructor
}
handleChange = (e) => {
const { name, value } = e.target;
this.setState({
[name]: value
}
}
handleSubmit = (e) => {
// do something
}
render() {
<form onSubmit={(e) => handleSubmit(e)}>
{ inputs.length ?
inputs.map(input => {
const { name, placeholder, type } = input;
const value = this.state[name] || ''; // Does it exist? If so use it, if not use an empty string
return <input key={name} type={type} name={name} placeholder={placeholder} value={value} onChange={this.handleChange}/>
}) :
null
}
<button type="submit" onClick={(e) => e.preventDefault }>Submit</button>
</form>
}
}