Question

I’m trying to create a plugin in wordpress and want to include a JS script in the tags area only when i’m viewing the menu page.

add_action('admin_menu', 'register_custom_menu_page');

function register_custom_menu_page() {
  add_menu_page('Home', 'PCPAL', 'manage_options',  'pcpalmain', 'da_controller',   '', 99);
}

function DA_controller()
{
   add_action('admin_head', 'da_admin_head');
}

function da_admin_head()
{
  echo "<script type='text/javascript' src='".plugins_url('js/pcpal.js', __FILE__)."'></script>";
}

This script work if i move the add_action(‘admin_head’, ‘da_admin_head’); outside the DA_function function.

Answer 1

1. you are including JS the wrong way you need to enqueue it -> http://codex.wordpress.org/Function_Reference/wp_enqueue_script
2. your first add_action goes to the admin_head you need to use admin_init

tutorial about enqueue-ing
http://halfelf.org/2012/jquery-why-u-no-enqueued/