apply_filters( ‘do_shortcode_tag’, string $output, string $tag, array $attr, array $m )

User Contributed Notes

1. Skip to note 3 content

   Aurovrata Venet 8 years ago

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   Another useful functionality is to enqueue shortcode-specific scripts,

   add_action( 'wp_enqueue_scripts', 'register_my_script');
   function register_my_script(){
     wp_register_script('my-shortcode-js',$src, $dependency, $version, $inFooter);
   }
   add_filter( 'do_shortcode_tag','enqueue_my_script',10,3);
   function enqueue_my_script($output, $tag, $attr){
     if('myShortcode' != $tag){ //make sure it is the right shortcode
       return $output;
     }
     if(!isset($attr['id'])){ //you can even check for specific attributes
       return $output;
     }
     wp_enqueue_script('my-shortcode-js'); //enqueue your script for printing
     return $output;
   }

   first you register your script, which doesn’t actually get printed on your page unless your enqueue it if your shortcode is called.
2. Skip to note 4 content

   Aurovrata Venet 8 years ago

   You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note

   This filter is very useful to either add additional content at the end of a shortcode (for example an inline script),

   add_filter( 'do_shortcode_tag','add_my_script',10,3);
   function enqueue_my_script($output, $tag, $attr){
     if('aShortcode' != $tag){ //make sure it is the right shortcode
       return $output;
     }
     if(!isset($attr['id'])){ //you can even check for specific attributes
       return $output;
     }
     $output.='<script> ... </script>';
     return $output;
   }