How does WeChat Mini Programs's web-view page realize that he clicks the back button in the upper left corner to return to Mini Program's page at once?

WeChat Mini Programs"s web-view page is a website that can click on the categories in the site at will. After many clicks, how to click the return button in the upper left corner to return to the Mini Program page once without having to return once

Mar.11,2021

write a page jump, and write down the page path of the jump.
bindViewTab:function () {

wx.navigateTo({  
     url:"/pages/aaa/aaa"
})
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3bfc6-2c2e4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3bfc6-2c2e4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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