Reactjs - Form input validation

Question

My Contact page form is as follows,

  <         


        

Answer 1

I've taken your code and adapted it with library react-form-with-constraints: https://codepen.io/tkrotoff/pen/LLraZp

const {
  FormWithConstraints,
  FieldFeedbacks,
  FieldFeedback
} = ReactFormWithConstraints;

class Form extends React.Component {
  handleChange = e => {
    this.form.validateFields(e.target);
  }

  contactSubmit = e => {
    e.preventDefault();

    this.form.validateFields();

    if (!this.form.isValid()) {
      console.log('form is invalid: do not submit');
    } else {
      console.log('form is valid: submit');
    }
  }

  render() {
    return (
       this.form = form}
        onSubmit={this.contactSubmit}
        noValidate>

        

          
          
            
          

          
          
            
          

          
          
            
          

          
          
            
          
        

        

                    <FieldFeedbacks for="comments">
            <FieldFeedback when="*" />
          </FieldFeedbacks>
        </div>

        <div className="col-md-12">
          <button className="btn btn-lg btn-primary">Send Message</button>
        </div>
      </FormWithConstraints>
    );
  }
}
</code></pre>

<p>Screenshot:</p>

<p></p>

<p>This is a quick hack. For a proper demo, check  https://github.com/tkrotoff/react-form-with-constraints#examples</p>
    </p>
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            });
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            	});
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