dangerouslySetInnerHTML={{ __html:item}}
// -------------------------------1
this.state.List.map((item, index) => {
return (
<li key={item + index}
onClick={() => { this.deleteItem(index) }}
dangerouslySetInnerHTML={{ __html:item}}
>
</li>
// -----------------------------2
<li key={item + index}
onClick={() => { this.deleteItem(index) }}
>
{item}
</li>
)
})