How to add custom javascript to WordPress Admin?

Question

I want to add some custom jquery code to the Edit Post page, something really simple like showing a div when someone presses Publish.

The only restriction is that I want to achieve this through the use of a plugin, not hacking the admin template files.

I've tried echoing some script tags using some actions but it doesn't seem to be the way.

Answer 1

you can add javascript to pages inside wpadmin page editor. wrap it in [RAW]...[/RAW] tags

[RAW]
<script type='text'/javascript'>
 // ...
</script>
[/RAW]

Answer 2

<?php
function add_jquery_data() {
    global $parent_file;

    if ( isset( $_GET['action'] ) && $_GET['action'] == 'edit' && isset( $_GET['post'] ) && $parent_file == 'edit.php') {
    // Do some stuff.
    }
}

add_filter('admin_head', 'add_jquery_data');

?>