render(){
return(
<div>
<h2> word : {this.state.value} </h2>
<button onClick={this.handleClick}> Click </button>
<list>1</list>
<textarea placeholder="(50 words over)" rows={10} style={{ width: '100%' }}/>
</div>
);
}
如何将textarea中的文本保存到本地txt文件中?