React onSubmit Form example

/* Form on submit */
<form onSubmit={(e) => {
  e.preventDefault();
  const data = [...this.state.data,
                this.state.inputText];
  this.setState({data, inputText: ''});
}}>
  <input
    type='text'
    name='inputText'
    value={this.state.inputText}
    onChange={(e) => {
      this.setState({[e.target.name]: e.target.value})
    }}
  />
</form>

/**
 * On form submit takes the event and prevent default behaviour
 * then create a new array at the end of ...this.state.data with the value from the input
 * then setState passing the new arra 'data' and re set inputText to empty.
 * JSX displays the name and the vale of the event target.
 */