oddcomments

I ended up getting the answer at stackoverflow. If anyone runs into this, the answer is to wrap it in an if ($(window).width() < 768). The modified code is as follows:

if ($(window).width() < 768) {
	wp.customize( 'background_color', function( value ) {
		value.bind( function( newval ) {
			$('nav').css('background-color', newval );
		} );
	} );
}

One flaw, however, is that it doesn’t work if you start larger and resize. The response to that was to use $(window).trigger('resize'); and load it on $(document).ready(function() { $(window).trigger('resize'); });