报错信息
Error: Given action “SET_VISIBILITY_FILTER”, reducer “visibilityFilter” returned undefined. To ignore an action, you must explicitly return the previous state. If you want this reducer to hold no value, you can return null instead of undefined.
1
2
3
4
5
6
7
8
9
10
onClick
src/containers/FilterLink.js:12
9 |
10 | // mapDispatchToProps
11 | const mapDispatchToProps = (dispatch, ownProps) => ({
> 12 | onClick: () => dispatch(setVisibilityFilter(ownProps.filter))
13 | });
14 |
15 | // export
错误原因
输入错误 SHO_COMPLETED VisibilityFilters.SHO_COMPLETED
1
2
3
<FilterLink filter={VisibilityFilters.SHO_COMPLETED}>
禁用
</FilterLink>
解决方法
将 SHO_COMPLETED 改为 SHOW_COMPLETED
1
2
3
<FilterLink filter={VisibilityFilters.SHOW_COMPLETED}>
禁用
</FilterLink>
项目地址
https://github.com/cwy007/todos_app
