React(0.13) 定义一个使用动画

时间：2023-03-09 07:34:16
React(0.13) 定义一个使用动画 
<!DOCTYPE html>

<html>

    <head>

        <title>React JS</title>

        <script src="../build_0.13/react.js"></script>

        <script src="../build_0.13/JSXTransformer.js"></script>

        <script src="../build_0.13/react-with-addons.min.js"></script>

        <style type="text/css">

            .example-enter{color:red;}

            .example-active{color:green;}

        </style>

    </head>

    <body>

        <div id="example" ></div>

        <script type="text/jsx">

            var ReactCSSTransitionGroup = React.addons.CSSTransitionGroup;

            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>

                                 <button onClick={this.handleAdd}>Add Item</button>

                                 <ReactCSSTransitionGroup transitionName="example">

                                    {items}

                                </ReactCSSTransitionGroup>

                            </div> );

                }

            });

            //将组件加到对应的元素上

            React.render( <TodoList />, document.getElementById('example') );

        </script>

    </body>

</html>

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