1 回答Error in mounted hook: "TypeError: Cannot read property 'display' of undefined"

3 回答 Error in mounted hook: "TypeError: Cannot read property 'display' of undefined"

1 回答為什么報錯，沒有thems屬性？TypeError: Cannot read property 'themes' of undefined

1 回答container : undefined

1 回答獲取navigationd是 undefined