$("#myinput").on("keyup", function(event) {

var val = $(event.currentTarget).val(); ...

});

So I get a new typed value at every character typed, including backspace ou CR (that I can test by :

if (event.keyCode == 13) ...)

Eveything works fine on all browsers I tested ... except one : Aurora (Firefox) browser on Android (4.0) running on my tab (but Chrome works well). 

The only event that I may catch is "change" but the application behaviour is really different : I only get a value after a loss of input focus (tab or CR).

What is wrong with this browser masking the "keyup" event to jqm developers ?

Is it a workaround (compatible with other browsers) ?

Thanks