Question

I run this regex on #q keyup event to avoid extra spaces in a string.

$('#q').val($('#q').val().replace(/\s+/g,' '));

The problem is that it is also deleting all new lines. How can I delete extra spaces but keep new lines intact?

Answer 1

The issue is that \s represents all whitespace including newlines. If you just want spaces, you can have a literal space:

$('#q').val($('#q').val().replace(/ +/g,' '));

If you want spaces and tabs, you could use a character class instead:

$('#q').val($('#q').val().replace(/[\t ]+/g,' '));