Question

I want to do something like this:

/<script[^>]*>(?!<\/script>)*<\/script>/g

to match all scripts tag in a html string using javascript.

I know this won’t work but i can’t seem to find any other solutions.
The script-tag can either use the src attribute and close it self right after (<script src="..." type="text/javascript"></script>) or can contain the code within the script-tag (<script type="text/javascript">...</script>)

Answer 1

You were close

/<script[^>]*>(?:(?!<\/script>).)*<\/script>/g

You must have something to eat the actual script body. That’s what the . does here.

The look-ahead check must occur before every character, so it is wrapped in an extra (non-capturing) group. To capture the script source code in group 1, just add another set of parens around the (?:...) like @AlanMoore pointed out in the comments.