Remove carriage return and space from a string

Question

I want to remove carriage return and space from a string for exemple:

var t ="     \n \n    aaa \n bbb \n ccc \n";

I want to have as result:

t = "aaa bbb ccc"

I use this one, it removes carriage return but I still have spaces

t.replace(/[\n\r]/g, '');

Please someone help me.

@vp_arth what's the point to include `\n` and `\r` if `\s` already matches them? — Ulugbek Umirov, Apr 07 '14 at 19:40
Maybe I wrong... I remember some about lineends and global flag.. may be about a point? sorry) — vp_arth, Apr 07 '14 at 19:44

score 60 · Accepted Answer · answered Apr 07 '14 at 19:25

60

Try:

 t.replace(/[\n\r]+/g, '');

Then:

 t.replace(/\s{2,10}/g, ' ');

The 2nd one should get rid of more than 1 space

answered Apr 07 '14 at 19:25

Andrew Newby

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Ulugbek Umirov · Answer 2 · 2014-04-09T07:47:58.923

24

Or you can do using single regex:

t.replace(/\s+/g, ' ')

Also you will need to call .trim() because of leading and trailing spaces. So the full one will be:

t = t.replace(/\s+/g, ' ').trim();

edited Apr 09 '14 at 07:47

answered Apr 07 '14 at 19:29

Ulugbek Umirov

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and I still call replace(/^\s+|\s+$/g,'') for this :) Need to review updates) – vp_arth Apr 07 '14 at 19:47
@tenub I replace multiple whitespaces with single space. So if there were leading whitespaces, there will be leading space. If there were trailing whitespaces, there will be trailing space. We get rid of them using `.trim()`. EDIT: oops, @tenub already deleted the question. – Ulugbek Umirov Apr 07 '14 at 19:50
This worked for me whereas the [other popular answer](https://stackoverflow.com/a/22921273/836169) did not catch my case. – Chiramisu Jun 29 '19 at 01:19

score 4 · Answer 3 · answered Jun 05 '17 at 14:17

4

I would suggest

to clear carriage return => space
to replace multiple spaces by a single one
to clear leading and trailing spaces (same as jQuery trim())

Thus

t.replace(/[\n\r]+/g, ' ').replace(/\s{2,}/g,' ').replace(/^\s+|\s+$/,'')

answered Jun 05 '17 at 14:17

Open SEO

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score 0 · Answer 4 · answered Mar 31 '16 at 10:49

Fantastic! thanks for sharing Ulugbek. I used the following code to have comma separated values from a barcode scanner. Anytime the barcode scanner button is pressed, carriage returns and spaces are converted to commas.

Java Script:

function KeyDownFunction() {
    var txt = document.getElementById("<%=txtBarcodeList.ClientID %>");
    txt.value = txt.value.replace(/\s+/g, ',').trim();
}

Markup:

<asp:TextBox ID="txtBarcodeList" runat="server" TextMode="MultiLine" Columns="100"
                    Rows="6" onKeyDown="KeyDownFunction()"></asp:TextBox>

Remove carriage return and space from a string

4 Answers4