How to remove all line breaks from a string

Question

I have a text in a textarea and I read it out using the .value attribute.

Now I would like to remove all linebreaks (the character that is produced when you press

Answer 1

I am adding my answer, it is just an addon to the above, as for me I tried all the /n options and it didn't work, I saw my text is comming from server with double slash so I used this:

var fixedText = yourString.replace(/(\r\n|\n|\r|\\n)/gm, '');

Answer 2

You can use \n in a regex for newlines, and \r for carriage returns.

var str2 = str.replace(/\n|\r/g, "");

Different operating systems use different line endings, with varying mixtures of \n and \r. This regex will replace them all.

Answer 3

A linebreak in regex is \n, so your script would be

var test = 'this\nis\na\ntest\nwith\newlines';
console.log(test.replace(/\n/g, ' '));

Answer 4

Try the following code. It works on all platforms.

var break_for_winDOS = 'test\r\nwith\r\nline\r\nbreaks';
var break_for_linux = 'test\nwith\nline\nbreaks';
var break_for_older_mac = 'test\rwith\rline\rbreaks';

break_for_winDOS.replace(/(\r?\n|\r)/gm, ' ');
//output
'test with line breaks'

break_for_linux.replace(/(\r?\n|\r)/gm, ' ');
//output
'test with line breaks'

break_for_older_mac.replace(/(\r?\n|\r)/gm, ' ');
// Output
'test with line breaks'

Answer 5

var str = " \n this is a string \n \n \n"

console.log(str);
console.log(str.trim());

String.trim() removes whitespace from the beginning and end of strings... including newlines.

const myString = "   \n \n\n Hey! \n I'm a string!!!         \n\n";
const trimmedString = myString.trim();

console.log(trimmedString);
// outputs: "Hey! \n I'm a string!!!"

Here's an example fiddle: http://jsfiddle.net/BLs8u/

NOTE! it only trims the beginning and end of the string, not line breaks or whitespace in the middle of the string.

Answer 6

If you want to remove all control characters, including CR and LF, you can use this:

myString.replace(/[^\x20-\x7E]/gmi, "")

It will remove all non-printable characters. This are all characters NOT within the ASCII HEX space 0x20-0x7E. Feel free to modify the HEX range as needed.