使用React实现类似快递单号查询效果

来源：互联网发布：apk下载引导页html源码编辑：程序博客网时间：2024/06/10 06:12

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <meta name="Keywords" content="关键词一，关键词二">    <meta name="Description" content="网站描述内容">    <meta name="Author" content="刘艳">    <title></title></head><body>    <div id = "example"></div></body></html><script src = "build/jquery-1.11.2.min.js"></script><script src = "build/react.js"></script><script src = "build/react-dom.js"></script><script src = "build/browser.min.js"></script><script type="text/babel">    var MyComponent = React.createClass({        handKeyUp: function () {            this.refs.clone.innerHTML = this.refs.target.value;        },        render: function () {            return (<div>                        <div ref = "clone" style = {{height:40+'px',fontSize:28+'px'}}></div>                        <input type = "text"  ref = "target" onKeyUp = {this.handKeyUp}></input>                    </div>);        }    });    ReactDOM.render(<MyComponent></MyComponent>,document.querySelector("#example"));</script>

实现效果如下：
这里写图片描述
CSS美化略过，因为主要是学习React使用。
另一种更为简便的写法如下，充分利用react组件的state：

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <meta name="Keywords" content="关键词一，关键词二">    <meta name="Description" content="网站描述内容">    <meta name="Author" content="刘艳">    <title></title></head><body><div id = "example"></div></body></html><script src="build/react.js"></script><script src="build/react-dom.min.js"></script><script src="build/browser.min.js"></script><script type="text/babel">    var Input = React.createClass({        getInitialState: function(){            return {value: "Hello"};        },        handleChange: function (event) {            this.setState({value: event.target.value});        },        render: function(){            var value = this.state.value;            return (                <div>                    <p>{value}</p>                    <input type = "text" value = {value} onChange = {this.handleChange} />                </div>            );        }    });    ReactDOM.render(        <Input />,        document.querySelector("#example")    )</script>

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