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Slider

Drag the handle to select a numeric value.

slider option type — Theme Settings example 
$options = [
	'demo_slider' => [
		'label' => __( 'Slider', 'unysonplus' ),  // or false to hide the label column
		'type' => 'slider',
		'value' => 10,
		'desc' => __( 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.', 'unysonplus' ),
		'help' => sprintf( "%s \n\n'\"<br/><br/>\n\n <b>%s</b>",
			__( 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.', 'unysonplus' ),
			__( 'Sed ut perspiciatis, unde omnis iste natus error sit voluptatem accusantium doloremque laudantium', 'unysonplus' )
		),
		// — Optional attributes you can add —
		// 'attr' => [ 'class' => 'my-class', 'data-foo' => 'bar' ],  // extra HTML attributes
		// 'properties' => [ 'min' => 0, 'max' => 100, 'step' => 1 ],
	],
];

Reading the value​

slider returns a number — output it directly.

In a shortcode​

The shortcode framework passes the option values into view.php as $atts:

echo (float) $atts['demo_slider'];

In a page template — a per-page option​

Options defined on a post/page (a metabox) are read with fw_get_db_post_option():

$value = fw_get_db_post_option( get_the_ID(), 'demo_slider' );
echo (float) $value;

When the field is one of several inside a box/group, read the whole group once and pick fields by key — the common CPT pattern (e.g. a review or book box):

$book = fw_get_db_post_option( get_the_ID(), 'book' );
echo (float) $book['demo_slider'];

In Theme Settings — a global option​

Global options are read with fw_get_db_settings_option():

$value = fw_get_db_settings_option( 'demo_slider' );
echo (float) $value;

Saved value​

fw_print( fw_get_db_settings_option( 'demo_slider' ) ) outputs — the shape of this option type's stored value:

7