vue項目常見問題一--------------獲取不到子組件的值以及解決方法

原創 布朗狗熊 2020-06-21 07:46

1.在父組件打印this.$refs子組件的值，然後報錯undefined!
在頁面加載完成打印第二個子組件，報錯，因爲第二部分沒有加載
所以寫的時候加個判斷控制，賦值的時候也加上條件控制，就不會報錯了
下圖參考
在這裏插入圖片描述
然後tab切換的時候v-if的值對應改變。

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