JS replaces the contents of the script tag, including line break

These days in the project you need to use JS to replace the contents of the script tag

You can make a match with your own string, but once you have a large string of DOM content to match,

has been prompted to fail.

Surf the internet to find a lot of information, has not matched, debugging for a long time

Depressed time, a flash of light, difficult is the problem of the line, a test, sure enough.

var str = ' lkjkjk ' + ' <script type=text/html>  abc </SCRIPT> 'var reg =/<script.* >.*<\/script>/Gialert (reg.test (str))

Prompt true

var str = ' lkjkjk ' + ' <script type=text/html>  abc\n </SCRIPT> 'var reg =/<script.* >.*<\/script>/Gialert (reg.test (str))

Prompt false

Finally, the line break is added to the matching rule to successfully

var str = ' <script type=text/html>  ffff  \n</script> 'var reg =/<script.*> ([\s\s]*?) <\/script>/Gialert (reg.test (str))

JS replaces the contents of the script tag, including line break