How can I check if a dataset field is empty?

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I know this is an old post but I need help with this as well and I haven’t been able to find a workable solution. All I need to do is check is a field is empty or not so can show / hide the label. I don’t need to match or validate.
Actually each row has 3 fields that need to be checked, as long as one of the three is not empty I want my label to show. Please help.
Thanks in advance

export function repeater1_itemReady ( $item , itemData , index ) {
$w ( “#repeater1” ). onItemReady ( ( $w , itemData , index ) => {
if ( itemData . station ! = “” ) {
$w ( “#btnShowHide” ). show ();
}
else {
$w ( “#btnShowHide” ). hide ();
}
});
}