How to run the app made by h5 in the background

there is a project that uses App written in H5 to package hubilder

.

if you click on another page, click the return button to return to the previous page;

but if you click on the home page, the app will end

how to click the return key to run app in the background,

Apr.09,2021
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-64f5-1e8e9b4-11f3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e8e9b4-11f3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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