Replacing document.write of external script

Question

Is there any way to replace document.write of an external script that I can't edit?

<div class="mydiv">
        <script type="text/javascript" src="https://www.formstack.com/forms/js.php?3349003-8L4WS0Z6Xi"></script>
</div>

I tried the below code to replace it but it just messed up all the things

document.write=function(s){
    var scripts = document.getElementsByTagName('script');
    var lastScript = scripts[scripts.length-1];
    lastScript.insertAdjacentHTML("beforebegin", s);
}```

Answer 1

Not sure why you want to overwrite it, maybe to improve performance with append?

document.write = function(s) {
    document.body.append(s)
}