User:Zhaofeng Li/RefToggle.js Source: en.wikipedia.org/wiki/User:Zhaofeng_Li/RefToggle.js

$( document ).ready( function() {
	var refToggle = mw.util.addPortletLink( "p-tb", "#", "Toggle references");
	$( refToggle ).click( function() {
		$( ".reference" ).toggle();
	} );
} );