The beginning of the problems encountered:
Click to select the category [rescue] -> click [submit] -> jump to another page ---> then choose to enter this page
Select a category because when I do a style: click that will change the background color
However, the problem is encountered: the first time to enter the page background color will become, and the second will not become the
Solution:
In fact, this is the page after the page jump there has not been destroyed, but after using the methods of destruction are still useless
Together with v-if the page is determined, the initialization is true, the jump after which it goes false
