warning: React does not recognize the `subTitle` prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `subtitle` instead. If you accidentally passed it from a parent component, remove it from the DOM element.

1.原因： 不要将组件的属性, 传给DOM节点。

2.修改方法：

     将<div>或其他html标签，非其属性去掉。

react语法不喜欢冗余的写法。