import React, { Component, Fragment } from 'react';
class TodoList extends Component {
    render(){
        return(
         <Fragment>
            <div><input /><button>提交</button></div>
            <ul>
                <li>学习react<li/>
                <li>Learning React</li>
            </ul>
         <Fragment/>
        )
    }
}
export default TodoList

//放在construcor里
this.state = {
    list: [1, 2, 3]
}

function showhtml(htmlString){
    var html = {__html:htmlString};
    return   <div dangerouslySetInnerHTML={html}></div> ;
}