check length

[titosd]

I want to ask you

If i want to check length from input, but when the user is add new line i want the length to decrease 2 chars

for example this string :

Hello
World

I want this string to be 12 chars, because Hello 5 chars + 2 chars because the new line and 5 chars for the World

but in another side if the string is:
Hello World
I want the length to be 11 chars because 5 for the 'Hello' and 1 for the space and 5 for the 'World'

[Airshow]

I'm not sure exactly what you want but this sort of thing is very simple with regular expressions.

Maybe you want to strip all white space or just carriage returns/linefeeds:

function stripWhiteSpace(str) {
    return str.replace(/\s/g, '');
}

function stripReturns(str) {
    return str.replace(/[\n\r]/g, '');
}

You can see these functions working here.

Airshow