An example of a WordPress shortcode that takes parameters

functions.php

<?php

/*
Collect and display a sorted, unordered list element containing all children of the current post
Supported attributes:
	`remove` = this string will be removed in the resulting links
	`exclude` = posts whose title contains one of these comma-separated strings will be omitted
  
TODO: fix both params to be pipe-delimited because flexibility
*/
function foo_get_child_pages($atts = [], $content = null, $tag = '')
{
	global $post;

	$children = get_posts(array(
		'post_parent' => $post->ID,
		'post_status' => 'publish',
		'post_type' => 'page',
		'orderby'	=> 'menu_order',
		'numberposts' => -1
	));

	if ($children) {
		$atts = array_change_key_case((array)$atts, CASE_LOWER);
		$ourattrs = shortcode_atts(
			array('remove' => '', 'exclude' => ''),
			$atts,
			$tag
		);
		$excludes = explode(',', $ourattrs['exclude']);
		$outp = '<ul class="academy-module-menu">';
		foreach ($children as $child) {
			if (!empty($excludes)) {
				$skip = false;
				foreach ($excludes as $exclude) {
					if (stristr($child->post_title, $exclude)) {
						$skip = true;
					}
				}
				if ($skip) {
					continue;
				}
			}
			$title = str_replace($ourattrs['remove'], '', $child->post_title);
			$outp .= '<li><a href="' . get_the_permalink($child->ID) . '">' . $title . '</a></li>';
		}
		$outp .= '<ul>';
		return $outp;
	} else {
		return;
	}
}
add_shortcode('foo_generate_inline_menu', 'foo_get_child_pages');