jquery-mobile/js/jquery.mobile.widget.js

(function( $ ) {

$.widget( "mobile.widget", {
	_getCreateOptions: function() {
		var elem = this.element,
			options = {};
		$.each( this.options, function( option ) {
			var value = elem.data( option.replace( /[A-Z]/g, function( c ) {
				return "-" + c.toLowerCase();
			} ) );
			if ( value !== undefined ) {
				options[ option ] = value;
			}
		});
		return options;
	}
});

})( jQuery );