how does WeChat Mini Programs chat Mini Program trigger that when there is a new message at the bottom of the page, the page is automatically pushed up when users flip up to view historical messages

at present, both the self-sent message and the other-sent message will be pushed to display the new message on the page, but in this way, if the user views the previous message, the new message page will immediately slide to the bottom. Is there any way to monitor the distance of the chat module from the bottom of the page? this part of the scroll-view