老师,我看了6-10完成了list的删除,
handleDelete(index){ const action = { type:"delete_item", index } dispatch(action) } 可是 if(action.type === 'delete_item'){ const newState = {...state}; newState.list.splice(action.index,1); console.log(newState.list); //这里打出来删掉了 return newState; } 页面中没有删除掉,是为什么呢