Count Characters Including the Break Line of an HTML TAG

I have a regex to remove the html tags to count my characters. Which is working fine.

<string_variable>.replaceAll("<(.|\n)*?>","").replaceAll("&nbsp;"," ").replaceAll("&amp;","&");

alert <string_variavle>.length()

But I need to add the
(New Line) to count my characters.

ABC

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DEC

For example above ABC and DEC are 6 characters with 2 break lines it should be 9. As of now it is just counting with 6 characters.

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Tweaking my code

>Solution :

You can systematically replace all of your \n to a different char and then use the length:

const temp = myVar.replaceAll("\n", "a")
console.log(temp.length)