Question

This must be an easy question for those who are not new to WordPress (I am).

I want to add some HTML (a <script> tag, actually) to the page where you edit a post. I do NOT want to add HTML code to the post itself, rather I want to add some stuff somewhere in the code around the editor.

I think what I need is to hook into some action that fires when the editor page is created, but I’m not sure.

(I am guessing this is probably not a good practice but I’m trying to do a quick and dirty hack to save myself a lot of time in a project that is not going to be reused in the future. I want to use javascript to modify the editor page slightly when the DOM ready event fires.)

Also, can I do it from my theme’s functions.php file, or does it have to be a plugin?

Any help much appreciated.

Answer 1

Here is a simple function which you can put in you functions.php file and add your script code, and it will only show up on the new/edit post page:

add_action('admin_footer','add_my_script');
function add_my_script() {
    global $pagenow;
    if (in_array( $pagenow, array( 'post.php', 'post-new.php' ) )){
        ?>
        <SCRIPT TYPE="text/javascript">
            //your script here
        </SCRIPT>
        <?php
    }
}