Auto-advance slider

gistfile1.phtml

	/**
	 * Add an option to auto-advance the Featured Content Slider.
	 */ 
	$wp_customize->add_setting( 'featured_content_autoplay', array(
		'default'           => 'off',
		'sanitize_callback' => 'mytheme_sanitize_autoplay',
	) );
	$wp_customize->add_control( 'featured_content_autoplay', array(
		'label'   => __( 'Autoplay', 'sendtheme' ),
		'section' => 'featured_content',
		'type'    => 'select',
		'choices' => array(
			'off'   => __( 'Off', 'sendtheme' ),
			'on' => __( 'On', 'sendtheme' ),
		),
		'priority' => 40,
	) );
	
	
	
/**
 * Sanitize the Featured Content Slider autoplay value.
 */
function mytheme_sanitize_autoplay( $autoplay ) {
	if ( ! in_array( $autoplay, array( 'off', 'on' ) ) ) {
		$autoplay = 'off';
	}
	
	return $autoplay;
}	
	
	

/**
 * If auto-advance has been enabled for the Featured Content slider, add the appropriate code.
 */ 
if ( get_theme_mod( 'featured_content_autoplay' ) === 'on' ) :
	/**
	 * Add some custom jQuery code to enable the Featured Content slider to auto advance.
	 * http://wordpress.org/support/topic/twenty-fourteen-slider-not-slide?replies=4#post-5046422
	 */ 
	function mytheme_add_slider_autoplay_script() { ?>
		<script type="text/javascript" charset="utf-8">
			jQuery(document).ready(function(){
				var change_every = 8; 
				var current = 1;
				function auto_advance(){
					if(current == -1) return false;
					jQuery('.flexslider .flex-next').eq(current % jQuery('.flexslider .flex-next').length).trigger('click', [true]);
					current++;
				};
				setInterval(function(){auto_advance()}, change_every * 1000);
			});
		</script>
	<?php }
	add_action('wp_footer', 'mytheme_add_slider_autoplay_script');
endif;