React Base Fiddle (JSX)

Starting point for creating JSFiddles with React. This uses React with Addons.

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://npmcdn.com/react@latest/dist/react-with-addons.js"></script>
<script src="https://npmcdn.com/react-dom@latest/dist/react-dom.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration-babel.js"></script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

JavaScript 1.7

var Inputs = React.createClass({
	getInitialState: function() {
    return {
      inputarr: ['']
    };
	},
  render: function() {
  	var self = this;
    return <div>{ this.state.inputarr.map(function (value, i) {
    	return <div key={i}><input onChange={function (e) {self.onChangeInput(i, e)}}/>
      { i < (self.state.inputarr.length - 1) && <button onClick={function () {self.onRemove(i)}}>x</button>}
      </div>;
    })  }</div>;
  },
  onChangeInput: function (i, e) {
    this.state.inputarr[i] = e.target.value;
    if (this.state.inputarr[this.state.inputarr.length - 1] !== '') {
      this.state.inputarr.push('');
    }
    this.setState({
      inputarr: this.state.inputarr.slice(0)
    });
  },
  onRemove: function (i) {
    this.state.inputarr.splice(i, 1);
    this.setState({
      inputarr: this.state.inputarr.slice(0)
    });
  }
});

ReactDOM.render(
  <Inputs/>,
  document.getElementById('container')
);