#### 货币选择
关键字：单选，记录5个最近选择结果，前端搜索
```jsx inside Markdown  

    class Example extends React.Component{
        constructor(props){
            super(props);
            this.state={
                text:'选择货币',
            };
        }
        render(){
            let mockData=[
                {
                "id":123,
                "code":"CNY",
                "name":"人民币",
                "symbol":"¥",
                "popularity":1,
                "currency_no":"123",
                "fractional":2
                },
                {
                "id":124,
                "code":"HKD",
                "name":"港币",
                "symbol":"$",
                "popularity":1,
                "currency_no":"124",
                "fractional":2
                }
            ];
            const {text} = this.state;
            return (<div>
                <CurrencySelector data={mockData} onChange={(val)=>{ this.setState({text:val.name}) }}>
                    <div sytle={{position:'relative'}}>{text}</div>
                </CurrencySelector>
            </div>  ) 
        }
    };
    <Example />
    

```