ReactJS Transitions - Why Doesn't It Work?

Question

I would like to move one element when it changes to another element.

I have 3 examples:

• one that works but uses a list of items that are stored around (jsfiddle)
• one that doesn't work and only supports one item depending on state (jsfiddle)
• another that doesn't work, which stores both elements and hides / shows them (jsfiddle using hide / show)

What I want is more like a second, which is a very minor change to the first attempt that works.

Option 1:

/** @jsx React.DOM */

var ReactTransitionGroup = React.addons.TransitionGroup;

var TodoList = React.createClass({
  getInitialState: function() {
    return {items: ['hello', 'world', 'click', 'me']};
  },
  handleAdd: function() {
    var newItems =
      this.state.items.concat([prompt('Enter some text')]);
    this.setState({items: newItems});
  },
  handleRemove: function(i) {
    var newItems = this.state.items;
    newItems.splice(i, 1)
    this.setState({items: newItems});
    },

    render: function() {
        var items = this.state.items.map(function(item, i) {
            return (
                <div key={item} onClick={this.handleRemove.bind(this, i)}>
                    {item}
                </div>
            );
        }.bind(this));

        return (
            <div>
                <div><button onClick={this.handleAdd} /></div>
                <ReactTransitionGroup transitionName="example">
                    {items}
                </ReactTransitionGroup>
            </div>
        );
    }
});

var app = React.renderComponent(<TodoList />, document.body);

Option 2: JSX, which does not work, but is closer to what I would like to do (indeed, hide one view and show another)

/** @jsx React.DOM */

var ReactTransitionGroup = React.addons.TransitionGroup;

var Test = React.createClass({
  getInitialState: function() {
    return {showOne:true}
  },
  onClick: function() {
    this.setState({showOne:! this.state.showOne});
  },
    render: function() {
      var result;
      if (this.state.showOne)
      {
        result = <div ref="a">One</div>
      }
      else 
      {
        result = <div ref="a">Two</div>
      }

        return (
            <div>
                <div><button onClick={this.onClick}>switch state</button></div>
                <ReactTransitionGroup transitionName="example">
                    {result}
                </ReactTransitionGroup>
            </div>
        );
    }
});

var app = React.renderComponent(<Test />, document.body);

3: hide/show, 2 , .

/** @jsx React.DOM */

var ReactTransitionGroup = React.addons.TransitionGroup;

var Test = React.createClass({
  getInitialState: function() {
    return {showOne:true}
  },
  onClick: function() {
    this.setState({showOne:! this.state.showOne});
  },
    render: function() {
      var result;
      var c1 = this.state.showOne ? "hide" : "show";
      var c2 = this.state.showOne ? "show" : "hide";


      return (
            <div>
                <div><button onClick={this.onClick}>switch state</button></div>
                <ReactTransitionGroup transitionName="example">
        <div className={c1}>One</div>
        <div className={c2}>Two</div>
                </ReactTransitionGroup>
            </div>
        );
    }
});

var app = React.renderComponent(<Test />, document.body);

, "" ? , 1, 2 !

Answer 1

React - DOM, . , .

  if (this.state.showOne)
  {
    result = <div key="one">One</div>
  }
  else 
  {
    result = <div key="two">Two</div>
  }

JSFiddle

Answer 2

Michelle Treys React-Router (1.0.1). Api , . React-routers, :

render() {
    return (
        <div id='app-wrapper'>
          <ReactTransitionGroup component='div' className='transition-wrapper'>
            {this.props.children}
          </ReactTransitionGroup>
        </div>
    );
  }

WillEnter . Michelle, :

render() {

    const { location } = this.props;

    return (
        <div id='app-wrapper'>
          <ReactTransitionGroup component='div' className='transition-wrapper'>
            {React.cloneElement(this.props.children, {
              key: location.pathname,
            })}
          </ReactTransitionGroup>
        </div>
    );
  }

.