效果如图所示：
输入会有提示：
代码如下：
class Suggest extends React.Component{
getValue(){
return this.refs.lowlevelinput.valaue;
}
render(){
const randomid=Math.random().toString(16).substring(2);
return (
<div>
<input
list={randomid}
defaultValue={this.props.defaultValue}
ref='lowlevelinput'
id={this.props.id}
/>
<datalist id={randomid}>
{this.props.options.map((item,idx)=>
<option value={item} key={idx}/>
)}</datalist>
</div>
);
}
}
ReactDOM.render(
<div>
<Suggest options={['esd','feff','fsf','fdsg','ghg']}/>
</div>,
document.getElementById('app')
);
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