react-examples/form-uncontrolled.htm at master · arvindpdmn/react-examples · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>React Uncontrolled Form</title>
</head>

<body>
    <div id="root"></div>

    <script src="https://unpkg.com/react@15/dist/react.js"></script>
    <script src="https://unpkg.com/react-dom@15/dist/react-dom.js"></script>
    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>

    <script type="text/jsx">
class NameForm extends React.Component {
  constructor(props) {
    super(props);
    this.handleNameChange = this.handleNameChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }

  handleNameChange(event) {
    // This is DOM manipulation
    this.name.value = this.name.value.toUpperCase();
  }

  handleSubmit(event) {
    alert(this.name.value + '\n' + this.sex.value + '\n' + this.address.value);
    event.preventDefault();
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit}>
        <label>
          Name:
          <input type="text" ref={input => this.name = input} onChange={this.handleNameChange} />
        </label>
        <br/>

        <label>
          Sex:
          <select ref={input => this.sex = input} >
            <option value="Male">Male</option>
            <option value="Female">Female</option>
          </select>
        </label>
        <br/>

        <label>
          Address:
          <textarea  ref={input => this.address = input} />
        </label>
        <br/>

        <input type="submit" value="Submit" />
      </form>
    );
  }
}

ReactDOM.render(
  <NameForm />,
  document.getElementById('root')
);
    </script>
</body>

</html>