If you insert </script>
inside a script tag, no matter if it’s a string in quotes, apostrophes, or even a template literal, it will always close the script tag. You have to escape it, for example like that:
var str=`
<script>
<\/script>
`
var pre = document.createElement('pre')
pre.textContent = str
document.body.appendChild(pre)
However, if you use external script <script src="https://stackoverflow.com/questions/36607932/url"></script>
, it should work fine without escaping.