Given that you also want to cover tabs, newlines, etc, just replace \s\s+ with ' ':
string = string.replace(/\s\s+/g, ' ');
If you really want to cover only spaces (and thus not tabs, newlines, etc), do so:
string = string.replace(/ +/g, ' ');
Top answer 1 of 16
1418
Given that you also want to cover tabs, newlines, etc, just replace \s\s+ with ' ':
string = string.replace(/\s\s+/g, ' ');
If you really want to cover only spaces (and thus not tabs, newlines, etc), do so:
string = string.replace(/ +/g, ' ');
2 of 16
254
Since you seem to be interested in performance, I profiled these with firebug. Here are the results I got:
str.replace( / +/g, ' ' ) -> 380ms
str.replace( /\s\s+/g, ' ' ) -> 390ms
str.replace( / {2,}/g, ' ' ) -> 470ms
str.replace( / +/g, ' ' ) -> 790ms
str.replace( / +(?= )/g, ' ') -> 3250ms
This is on Firefox, running 100k string replacements.
I encourage you to do your own profiling tests with firebug, if you think performance is an issue. Humans are notoriously bad at predicting where the bottlenecks in their programs lie.
(Also, note that IE 8's developer toolbar also has a profiler built in -- it might be worth checking what the performance is like in IE.)
Reddit
reddit.com › r/dataengineering › replacing multiple spaces with a single space
r/dataengineering on Reddit: Replacing multiple spaces with a single space
September 25, 2024 -
At first I thought this task won’t take more than half hour for me as the code was converting the dataframe into a temporary view and using sql on it. But the problem arose when I started testing and the escaping character was also eliminated then the special spaces like \n, \t started eliminating.
My task is to replicate just was oracle replaces that is just the multiple spaces with single space excluding all the escape characters and or the special spaces.
Can someone please help me on this. It will work if you suggest any sql regex replace or even any pyspark, pandas code to get it done as I am performing it in Databricks.
Thanks in advance🤗
removed random amount of extra spaces from string
Hello i am getting a string input that sperates a data table with a random amount of spaces. Is there a way to replace All space sequences with a single space ? e.g. CPU MEM PID 15.689 12.2 6610 21.8 156 6611 (so the spaces are random) I have ried replaces double spa... More on forums.ni.com
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0
June 27, 2015java - Regex or way to replace multiple space with single space - Stack Overflow
Could you please let me know is there any way to replace multiple space with single space in java or spring? Any stringUtils function for same? like 1. test test test test 2. test test test More on stackoverflow.com
RegEx how to replace multiple spaces with a single one
Possible Duplicate: Remove all multiple spaces in Javascript and replace with single space How can I replace, for instance this: " " " " " " " " with " " How can I replace all the e... More on stackoverflow.com
How can I use regex on multiple spaces?
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January 4, 2025Attacomsian
attacomsian.com › blog › javascript-replace-multiple-spaces-with-single-space
How to replace multiple spaces with a single space in JavaScript
October 23, 2022 - To replace multiple spaces with a single space in JavaScript, use the replace() method with a regex that matches all two or more consecutive whitespace characters.
TutorialsPoint
tutorialspoint.com › article › how-to-replace-multiple-spaces-in-a-string-using-a-single-space-using-java-regex
How to replace multiple spaces in a string using a single space using Java regex?
November 21, 2019 - import java.util.Scanner; public class Test { public static void main(String args[]) { //Reading String from user System.out.println("Enter a String"); Scanner sc = new Scanner(System.in); String input = sc.nextLine(); //Regular expression to match space(s) String regex = "\s+"; //Replacing the pattern with single space String result = input.replaceAll(regex, " "); System.out.print("Text after removing unwanted spaces: \n"+result); } }
GeeksforGeeks
geeksforgeeks.org › javascript › how-to-replace-multiple-spaces-with-single-space-in-javascript
JavaScript - How to Replace Multiple Spaces with a Single Space? - GeeksforGeeks
July 23, 2025 - The replace() method combined with a regular expression is the most efficient way to replace multiple spaces with a single space.
Notepad++ Community
community.notepad-plus-plus.org › topic › 16653 › need-help-on-replacing-multiple-spaces-to-a-single-space-using-regular-expression
Need help on replacing multiple spaces to a single space using Regular Expression | Notepad++ Community
November 18, 2018 - ... I’m sure there is a certain ... idea? Thanks in advance and appreciate for your suggessions. ... Put a single space followed by a + in the Find what box....
TutorialsPoint
tutorialspoint.com › article › how-to-replace-multiple-spaces-with-a-single-space-in-chash
How to replace multiple spaces with a single space in C#?
March 17, 2026 - using System; using System.Text.RegularExpressions; namespace DemoApplication { class Program { public static void Main() { string stringWithMultipleSpaces = "Hello World. Hi Everyone"; Console.WriteLine($"String with multiple spaces: {stringWithMultipleSpaces}"); string stringWithSingleSpace = Regex.Replace(stringWithMultipleSpaces, @"\s+", " "); Console.WriteLine($"String with single space: {stringWithSingleSpace}"); } } }
IncludeHelp
includehelp.com › code-snippets › regex-to-replace-multiple-spaces-with-a-single-space-in-javascript.aspx
Regex to replace multiple spaces with a single space in JavaScript
September 7, 2022 - The newValue will be a singular space specified like '' . If 'g' is not specified in the regular expression, then this will just replace the first expression matched. Therefore to replace all the matched expressions we need to specify the 'g' at the end of the regex.
Bobby Hadz
bobbyhadz.com › blog › python-replace-multiple-spaces-with-single-space
Replace multiple spaces with a single space in Python | bobbyhadz
April 9, 2024 - The re.sub method will return a new string that is obtained by replacing all occurrences of multiple spaces with a single space.
CodingTechRoom
codingtechroom.com › question › -replace-multiple-spaces-with-single-space
How to Replace Multiple Spaces with a Single Space Using Regex? - CodingTechRoom
In PHP, the preg_replace function can be used for this purpose: preg_replace('/\s+/', ' ', $string); Mistake: Not including regex flags which may cause issues in certain strings.
Programming Idioms
programming-idioms.org › idiom › 219 › replace-multiple-spaces-with-single-space › 3802 › python
Replace multiple spaces with single space, in Python
var t = s.replaceAll(RegExp(r"\s+"), " "); Demo · Doc · singleSpace(Text) -> singleSpace(0, Text). singleSpace(_, []) -> []; singleSpace(32, [32 | Rest]) -> singleSpace(32, Rest); singleSpace(32, [Ch | Rest]) -> [Ch] ++ singleSpace(Ch, Rest); singleSpace(Last, [Ch | Rest]) -> [Ch] ++ ...
Top answer 1 of 2
30
To replace multiple spaces
output = input.replaceAll("[ ]+", " ");
Or replace multiple whitespace characters (including space, tab, new line, etc.)
output = input.replaceAll("\\s+", " ");
2 of 2
4
This is a variation of @p.s.w.g - it ignores newlines, but still get tabs and such.
output = input.replaceAll("[^\\S\\r\\n]+", " ");
Alvin Alexander
alvinalexander.com › scala › how-to-convert-multiple-spaces-to-single-space-regex
Scala: How to convert multiple spaces to a single space (regex) | alvinalexander.com
As that example shows, the key is to first call trim to remove any leading and trailing spaces, and then call replaceAll to convert one or more blank spaces to a single space: val after = before.trim.replaceAll(" +", " ") (The code I show is a simple adaptation of the Java code I found on SO.) ...
O'Reilly
oreilly.com › library › view › regular-expressions-cookbook › 9781449327453 › ch05s13.html
5.13. Replace Repeated Whitespace with a Single Space - Regular Expressions Cookbook, 2nd Edition [Book]
August 27, 2012 - Any tabs, line breaks, or other whitespace should also be replaced with a space. To implement either of the following regular expressions, simply replace all matches with a single space character.
Authors Jan GoyvaertsSteven Levithan
Published 2012
Pages 609
GeeksforGeeks
geeksforgeeks.org › how-to-replace-multiple-spaces-with-single-space-in-javascript
JavaScript – How to Replace Multiple Spaces with a Single Space? | GeeksforGeeks
November 26, 2024 - The replace() method combined with a regular expression is the most efficient way to replace multiple spaces with a single space.