Missing “Add Bookmark” button on Safari iPad

Here is the script:

javascript:(function%20()%20%7B%20var%20script%20=%20document.createElement('script');%20script.src=%22//cdn.jsdelivr.net/npm/eruda%22;%20document.body.appendChild(script);%20script.onload%20=%20function%20()%20%7B%20eruda.init()%20%7D%20%7D)();

I just cannot edit the link

I just want to be honest that I wanted to bookmark a script, However, That method was for websites only