Your samples on this site with hardcoded source is very hard to understand.
To get more new jqwidget users I will suggest more samples with database connections.
I tried everything like this thread starter with no luck.
Thread starter had the text “using text with icons from database”
and the reply was with sample from harcoded source 
while ($row = $result->fetch_assoc()) {
$notyper[] = array(
'html' => '<b>sample html code</b>',
'vavalue' => $row[vavalue],
'vatext' => utf8_encode($row[vatext])
);
}
Tried this but it don’t display vatext 
$("#notype").jqxDropDownList({
theme: "boligdata",
width: '270',
source: notypeAdapter,
promptText: "Velg notistype...",
valueMember: 'vavalue',
displayMember: 'vatext'
});