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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@tev
I'll admit that this threw me off a bit too at first.
It does appear that there is some inconsistency in the standard app UIs as to what Back does, which is unfortunate since it probably makes things more confusing than they could be. For instance, in the Alarms app, going to the menu to create a new alarm or timer, then immediately tapping Back without making changes, immediately creates a new alarm or timer with default settings, which isn't really what I personally would expect to happen. I'd expect the operation to be canceled, or perhaps a prompt asking whether I meant to save the new item. But then in most other places, Back actually does cancel the changes rather than confirming them. It's not really obvious which “rule” is in effect on a particular menu.
In the case of the number-changer screen, perhaps having an OK button on Bangle 2 to set the value would be a bit more intuitive, assuming there is space for it.