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