Allow to include ajax url javascript argument in the template header

[alexvorn2]

in the admin-header.php we have a hardcoded javascript code for showing the ajax url in the header. I think this should be included in a function and enqueue when needed, allowing to include it in the template header too using only: wp_enqueue_script('load-ajax-url');

[SergeyBiryukov]

The code in question:
​http://core.trac.wordpress.org/browser/tags/3.5/wp-admin/admin-header.php#L51

• wp_enqueue_script() won't be enough, we would also need wp_localize_script() to set those values.
• Those variables are intended to be accessible throughout the admin, so hard-coding them in admin-header.php makes sense to me.
• ajaxurl on the front end should also be set via wp_localize_script():
  ​http://codex.wordpress.org/AJAX_in_Plugins#Ajax_on_the_Viewer-Facing_Side

So, wp_enqueue_script('load-ajax-url') alone doesn't seem feasible.