点击按钮增加数量.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script src="https://cdn.bootcss.com/react/15.6.1/react.min.js"></script>
    <script src="https://cdn.bootcss.com/react/15.6.1/react-dom.min.js"></script>
    <script src="https://cdn.bootcss.com/babel-standalone/7.0.0-alpha.15/babel.min.js"></script>
    <script type="text/babel">
        var ButtonCount = React.createClass({
            getInitialState: function(){
                return {
                    clickCount: 0 //设置h1点击数量初始值
                }
            },
            buttonClick: function(){
                this.setState({
                    clickCount: this.state.clickCount +1 //出发按钮点击事件后clickCount的值+1
                });
            },
            render: function(){
                return (
                    <div>
                        <button onClick={this.buttonClick}>点击</button>
                        <h1>点击数量：{this.state.clickCount}</h1>
                    </div>
                );
            }
        });
        ReactDOM.render(
            <ButtonCount/>,
            document.getElementById('root')
        );
    </script>
</body>
</html>