You need to refresh the select to reflect the changes after changing value:
$('#group_e').selectmenu('refresh', true);
Question
I can't select an option in a select box with a specific value. This is the code I am using:
$('#group_e option[value="'+parameters.group+'"]').attr("selected", "selected");
I did console.log()
the parameters.group
value so I know it is equal to the option I am trying to select.
I am doing this in an XCODE emulator using Phonegap and jQuery Mobile.
Solution
You need to refresh the select to reflect the changes after changing value:
$('#group_e').selectmenu('refresh', true);