Is there a JavaScript regular expression to remove all whitespace except newline?

Question

How do I remove white spaces in a string but not new line character in JavaScript. I found a solution for C# , by using \t , but it's not supported in JavaScript.

To make it more clear, here's an example:

var s = "this\n is a\n te st"

using regexp method I expect it to return

"this\nisa\ntest"

Answer 1

Try this

var trimmedString = orgString.replace(/^\s+|\s+$/g, '') ;

Answer 2

Check here

Answer 3

try this '/^\\s*/'

Answer 4

This will work, even on \t.

var newstr = s.replace(/ +?/g, '');

Answer 5

Although in Javascript / /g does match \t, I find it can hide the original intent as it reads as a match for the space character. The alternative would be to use a character collection explicitly listing the whitespace characters, excluding \n. i.e. /[ \t\r]+/g.

var newString = s.replace(/[ \t\r]+/g,"");

Answer 6

If you want to match every whitespace character that \s matches except for newlines, you could use this:

/[\t\v\f\r \u00a0\u2000-\u200b\u2028-\u2029\u3000]+/g

Note that this will remove carriage returns (\r), so if the input contains \r\n pairs, they will be converted to just \n. If you want to preserve carriage returns, just remove the \r from the regular expression.