Edit in JSFiddle

<select id="rifcs-idtype" name="rifcs-id-for" value=""></select>
$("#rifcs-idtype").vocab_widget({
	mode:"narrow",
	endpoint: 'https://vocabs.ands.org.au/apps/vocab_widget/proxy/',	mode_params:"http://purl.org/au-research/vocabulary/RIFCS/RIFCSIdentifierType",
	repository:"rifcs-current",
	cache: false,
	fields: ['definition'],
	target_field: 'label'
});