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I want to run a javascript function when the add_attachment hook fires. The following code does not interfere with uploading an image.

add_action('add_attachment', function( $post_ID ) {
    ?>
    <?php
});

When I add script tags and console.log("x"); I get an error message. The error message says "Bei dem Upload ist ein Fehler aufgetreten. Bitte versuche es später nochmal." See picture.

add_action('add_attachment', function( $post_ID ) {
    ?>
    <script type="text/javascript">
        console.log("x");
    </script>
    <?php
});

How can I avoid the error message and validate that my javascript code runs?

本文标签: Call javascript function when addattachment hook fires