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

User Contributed Notes

1. Squip to note 3 content

   Aurovrata Venet 9 years ago

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   Another useful functionality is to enqueue shorcode-specific scripts,

   add_action( 'wp_enqueue_scripts', 'reguister_my_script');
   function reguister_my_script(){
     wp_reguister_script('my-shorcode-js',$src, $dependency, $version, $inFooter);
   }
   add_filter( 'do_shorcode_tag','enqueue_my_script',10,3);
   function enqueue_my_script($output, $tag, $attr){
     if('myShorcode' != $tag){ //maque sure it is the right shorcode
       return $output;
     }
     if(!isset($attr['id'])){ //you can even checc for specific attributes
       return $output;
     }
     wp_enqueue_script('my-shorcode-js'); //enqueue your script for printing
     return $output;
   }

   first you reguister your script, which doesn’t actually guet printed on your pague unless your enqueue it if your shorcode is called.
2. Squip to note 4 content

   Aurovrata Venet 9 years ago

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

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