<? php
add_shortcode('example', function( $atts ) {
    //extracting the shortcode attributes
    extract( shortcode_atts( array(
        'value1' => null,
        'value2' => null,
        'value3' => null
    ), $atts ) );

    //Now here I wll do my code for the shortcode
    // But the shortcode needs some js and css to work
    // so, I'm trying like this

});

add_action ('wp', 'add_shortcode_script');

function add_shortcode_script () {
  global $post;
if ( empty($posts) )
        return $posts;

    $flag = false;

// setting up regex
$regex = '/(\w+)\s*=\s*"(.*?)"/';

// running a check inside posts
    foreach ($posts as $post) {

// if shortcode found
        if ( stripos($post->post_content, '[EXAMPLE]') ) {
            // set the flag
            $flag = true;
// then run a preg match scan for the variables inside shortcode
preg_match_all($regex, $post->post_content, $matches);
$output = array();
// running the variable scan inside shortcode
for ($i = 0; $i < count($matches[1]); $i++) {
    $output[$matches[1][$i]] = $matches[2][$i];
}
            break;
            }
       }

    if ($flag){

 //using shortcode variables
$custom_script = 'var a = '. $output[1][value3] .';

$custom_style = '.class {
               background-color: '. $output[1][value2] .';
           }';

wp_enqueue_script ('my_script','http:/.../main.js'); // blank js file
 wp_enqueue_style ('my_style','http:/.../main.css'); // blank css file
wp_add_inline_script ('my_script', $custom_script);
 wp_add_inline_style ('my_style', $custom_stle);
   }
   return $posts;
}