React render return 空行问题 傑

Uncaught Invariant Violation: App.render(): A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object.

原本:

然后改成这样:

就会报这样的错误

解决办法 :    1--还像之前那样

        2-- 就是在这之前加上 ()

 解决的 度娘出来的     http://stackoverflow.com/questions/37886727/react-uncaught-invariant-violation

还有---http://blog.csdn.net/liangklfang/article/details/53694994

原文地址:https://www.cnblogs.com/djlele/p/6776401.html