React Form submit example

Hello React - forms - using controlled components in a form. author(s): Ryan Vice

by Allie Yu

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://fb.me/react-with-addons-0.14.0.js"></script>
<script src="https://fb.me/react-dom-0.14.0.js"></script>

<div id="view"/>

CSS

button {
    margin-left: 5px;
}

input {
    margin: 5px;
}

form {
 padding-right: 10px;   
}
}

Babel + JSX

class TextBox extends React.Component{
    render() {
        return (
            <input className='form-control' 
                name={this.props.name}
                type='text' 
                value={this.props.value}
                onChange={this.props.onChange}/>
        )
    }
}
class ExampleForm extends React.Component{
    state = {
        form: { 
        	firstName: 'allie', 
          lastName: 'yu'
        } 
    }
    
    onChange = event => {
        this.state.form[event.target.name] = event.target.value;

        this.setState({form: this.state.form});
    }
    
    onSubmit = event => {
        event.preventDefault();
        
        alert('Form submitted. firstName: ' +
            this.state.form.firstName +
            ', lastName: ' +
            this.state.form.lastName);
            
    }
    
    render(){
       return (
            <form onSubmit={this.onSubmit}>
                <TextBox name='firstName' 
                    value={this.state.form.firstName}
                    onChange={this.onChange}/>
                <TextBox name='lastName'
                    value={this.state.form.lastName}
                    onChange={this.onChange}/>
                <button className='btn btn-success' 
                	type='submit'>Submit</button>
            </form>
        );
    }
};

ReactDOM.render(
    <ExampleForm/>,
    document.getElementById('view')
);