React contact form example

contactform.js

/** @jsx React.DOM */

var STATES = [
  'AL', 'AK', 'AS', 'AZ', 'AR', 'CA', 'CO', 'CT', 'DE', 'DC', 'FL', 'GA', 'HI',
  'ID', 'IL', 'IN', 'IA', 'KS', 'KY', 'LA', 'ME', 'MD', 'MA', 'MI', 'MN', 'MS',
  'MO', 'MT', 'NE', 'NV', 'NH', 'NJ', 'NM', 'NY', 'NC', 'ND', 'OH', 'OK', 'OR',
  'PA', 'RI', 'SC', 'SD', 'TN', 'TX', 'UT', 'VT', 'VA', 'WA', 'WV', 'WI', 'WY'
]

var Example = React.createClass({
  getInitialState: function() {
    return {
      email: true
    , question: true
    , submitted: null
    }
  }

, render: function() {
    var submitted
    if (this.state.submitted !== null) {
      submitted = <div className="alert alert-success">
        <p>ContactForm data:</p>
        <pre><code>{JSON.stringify(this.state.submitted, null, '  ')}</code></pre>
      </div>
    }

    return <div>
      <div className="panel panel-default">
        <div className="panel-heading clearfix">
          <h3 className="panel-title pull-left">Contact Form</h3>
          <div className="pull-right">
            <label className="checkbox-inline">
              <input type="checkbox"
                checked={this.state.email}
                onChange={this.handleChange.bind(this, 'email')}
              /> Email
            </label>
            <label className="checkbox-inline">
              <input type="checkbox"
                checked={this.state.question}
                onChange={this.handleChange.bind(this, 'question')}
              /> Question
            </label>
          </div>
        </div>
        <div className="panel-body">
          <ContactForm ref="contactForm"
            email={this.state.email}
            question={this.state.question}
            company={this.props.company}
          />
        </div>
        <div className="panel-footer">
          <button type="button" className="btn btn-primary btn-block" onClick={this.handleSubmit}>Submit</button>
        </div>
      </div>
      {submitted}
    </div>
  }

, handleChange: function(field, e) {
    var nextState = {}
    nextState[field] = e.target.checked
    this.setState(nextState)
  }

, handleSubmit: function() {
    if (this.refs.contactForm.isValid()) {
      this.setState({submitted: this.refs.contactForm.getFormData()})
    }
  }
})

/**
 * A contact form with certain optional fields.
 */
var ContactForm = React.createClass({
  getDefaultProps: function() {
    return {
      email: true
    , question: false
    }
  }

, getInitialState: function() {
    return {errors: {}}
  }

, isValid: function() {
    var fields = ['firstName', 'lastName', 'phoneNumber', 'address', 'city', 'state', 'zipCode']
    if (this.props.email) fields.push('email')
    if (this.props.question) fields.push('question')

    var errors = {}
    fields.forEach(function(field) {
      var value = trim(this.refs[field].getDOMNode().value)
      if (!value) {
        errors[field] = 'This field is required'
      }
    }.bind(this))
    this.setState({errors: errors})

    var isValid = true
    for (var error in errors) {
      isValid = false
      break
    }
    return isValid
  }

, getFormData: function() {
    var data = {
      firstName: this.refs.firstName.getDOMNode().value
    , lastName: this.refs.lastName.getDOMNode().value
    , phoneNumber: this.refs.phoneNumber.getDOMNode().value
    , address: this.refs.address.getDOMNode().value
    , city: this.refs.city.getDOMNode().value
    , state: this.refs.state.getDOMNode().value
    , zipCode: this.refs.zipCode.getDOMNode().value
    , currentCustomer: this.refs.currentCustomerYes.getDOMNode().checked
    }
    if (this.props.email) data.email = this.refs.email.getDOMNode().value
    if (this.props.question) data.question = this.refs.question.getDOMNode().value
    return data
  }

, render: function() {
    return <div className="form-horizontal">
      {this.renderTextInput('firstName', 'First Name')}
      {this.renderTextInput('lastName', 'Last Name')}
      {this.renderTextInput('phoneNumber', 'Phone number')}
      {this.props.email && this.renderTextInput('email', 'Email')}
      {this.props.question && this.renderTextarea('question', 'Question')}
      {this.renderTextInput('address', 'Address')}
      {this.renderTextInput('city', 'City')}
      {this.renderSelect('state', 'State', STATES)}
      {this.renderTextInput('zipCode', 'Zip Code')}
      {this.renderRadioInlines('currentCustomer', 'Are you currently a ' + this.props.company + ' Customer?', {
        values: ['Yes', 'No']
      , defaultCheckedValue: 'No'
      })}
    </div>
  }

, renderTextInput: function(id, label) {
    return this.renderField(id, label,
      <input type="text" className="form-control" id={id} ref={id}/>
    )
  }

, renderTextarea: function(id, label) {
    return this.renderField(id, label,
      <textarea className="form-control" id={id} ref={id}/>
    )
  }

, renderSelect: function(id, label, values) {
    var options = values.map(function(value) {
      return <option value={value}>{value}</option>
    })
    return this.renderField(id, label,
      <select className="form-control" id={id} ref={id}>
        {options}
      </select>
    )
  }

, renderRadioInlines: function(id, label, kwargs) {
    var radios = kwargs.values.map(function(value) {
      var defaultChecked = (value == kwargs.defaultCheckedValue)
      return <label className="radio-inline">
        <input type="radio" ref={id + value} name={id} value={value} defaultChecked={defaultChecked}/>
        {value}
      </label>
    })
    return this.renderField(id, label, radios)
  }

, renderField: function(id, label, field) {
    return <div className={$c('form-group', {'has-error': id in this.state.errors})}>
      <label htmlFor={id} className="col-sm-4 control-label">{label}</label>
      <div className="col-sm-6">
        {field}
      </div>
    </div>
  }
})

React.renderComponent(<Example company="FakeCo"/>, document.getElementById('contactform'))

// Utils

var trim = function() {
  var TRIM_RE = /^\s+|\s+$/g
  return function trim(string) {
    return string.replace(TRIM_RE, '')
  }
}()

function $c(staticClassName, conditionalClassNames) {
  var classNames = []
  if (typeof conditionalClassNames == 'undefined') {
    conditionalClassNames = staticClassName
  }
  else {
    classNames.push(staticClassName)
  }
  for (var className in conditionalClassNames) {
    if (!!conditionalClassNames[className]) {
      classNames.push(className)
    }
  }
  return classNames.join(' ')
}

index.html

<!DOCTYPE html>
<html>
  <head>
    <title>React Contact Form Example</title>
    <script src="http://fb.me/react-0.8.0.js"></script>
    <script src="http://fb.me/JSXTransformer-0.8.0.js"></script>
    <link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
    <link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap-theme.min.css">
  </head>
  <body>
    <div class="container">
      <div class="page-header">
        <h1><a href="http://facebook.github.io/react/">React</a> Contact Form Example</h1>
        <p>An example of building a reusable contact form using <a href="http://facebook.github.io/react/docs/forms.html#uncontrolled-components">uncontrolled components</a>, extracted from a <a href="http://facebook.github.io/react/">React</a> app I'm working on.</p>
        <p>Plain old JavaScript functions are used to remove duplication of structure and logic from the form layout.</p>
        <p>The validation is barebones and whole-form-at-a-time for now, as I have plans for <a href="http://github.com/insin/newforms">newforms</a> in this area&hellip;</p>
      </div>
      <div id="contactform"></div>
    </div>
    <script type="text/jsx" src="contactform.js"></script>
    <a href="https://gist.github.com/insin/8418675"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png" alt="Fork me on GitHub"></a>
  </body>
</html>

https://jsbin.com/yezabe/edit?html,js,output
?

@daslicht
Replace this line
React.renderComponent(, document.getElementById('contactform'));

with

React.render(, document.getElementById('contactform'))