The position of the first underline selected by the vant tabs component is abnormal

Example of error diagram

Create a scene ： The top title is the background interface data return .vnat-tabs Already in data Setting jump to this page is the selected state active=0, After the data appears , The underline label position is abnormal , Set again after the title is successfully obtained active=0, No effect , But sometimes the underlined data is normal .
Cause analysis ：Tabs When the component is mounted , Will get its own width , And calculate the position of the bottom bar . If the component is hidden at first , Then the obtained width is always 0, Therefore, the position of the bottom bar cannot be displayed .

Problem solving : I used method two

Be careful ： Call after getting the title data selectComponent Method , Otherwise, redrawing is invalid .
vant-tabs Official address