How to remove spaces in a string? For instance:
Input:
'/var/www/site/Brand new document.docx'
Output:
'/var/www/site/Brandnewdocument.docx'
" ahm ed ".split('').filter(e => e.trim().length).join('')
" ahm ed ".replace(/\s+/g, '');
? It seems like the slowest (in current Chrome) and most unreadable solution to me. jsfiddle.net/n74qsh50
This?
str = str.replace(/\s/g, '');
Example
var str = '/var/www/site/Brand new document.docx'; document.write( str.replace(/\s/g, '') );
Update: Based on this question, this:
str = str.replace(/\s+/g, '');
is a better solution. It produces the same result, but it does it faster.
The Regex
\s
is the regex for "whitespace", and g
is the "global" flag, meaning match ALL \s
(whitespaces).
A great explanation for +
can be found here.
As a side note, you could replace the content between the single quotes to anything you want, so you can replace whitespace with any other string.
var a = b = " /var/www/site/Brand new document.docx "; console.log( a.split(' ').join('') ); console.log( b.replace( /\s/g, '') );
Two ways of doing this!
SHORTEST and FASTEST: str.replace(/ /g, '');
Benchmark:
Here my results - (2018.07.13) MacOs High Sierra 10.13.3 on Chrome 67.0.3396 (64-bit), Safari 11.0.3 (13604.5.6), Firefox 59.0.2 (64-bit) ):
SHORT strings
Short string similar to examples from OP question
https://i.stack.imgur.com/RcsMa.png
The fastest solution on all browsers is / /g
(regexp1a) - Chrome 17.7M (operation/sec), Safari 10.1M, Firefox 8.8M. The slowest for all browsers was split-join
solution. Change
to \s
or add +
or i
to regexp slows down processing.
LONG strings
For string about ~3 milion character results are:
regexp1a: Safari 50.14 ops/sec, Firefox 18.57, Chrome 8.95
regexp2b: Safari 38.39, Firefox 19.45, Chrome 9.26
split-join: Firefox 26.41, Safari 23.10, Chrome 7.98,
You can run it on your machine: https://jsperf.com/remove-string-spaces/1
Following @rsplak answer: actually, using split/join way is faster than using regexp. See the performance test case
So
var result = text.split(' ').join('')
operates faster than
var result = text.replace(/\s+/g, '')
On small texts this is not relevant, but for cases when time is important, e.g. in text analisers, especially when interacting with users, that is important.
On the other hand, \s+
handles wider variety of space characters. Among with \n
and \t
, it also matches \u00a0
character, and that is what
is turned in, when getting text using textDomNode.nodeValue
.
So I think that conclusion in here can be made as follows: if you only need to replace spaces ' '
, use split/join. If there can be different symbols of symbol class - use replace(/\s+/g, '')
easy way
someString.replace(/ /g, '');
// or
someString.replace(/\s/gm, '');
var input = '/var/www/site/Brand new document.docx';
//remove space
input = input.replace(/\s/g, '');
//make string lower
input = input.toLowerCase();
alert(input);
Click here for working example
You also use one of the latest string methods of JS: replaceAll
'/var/www/site/Brand new document.docx'.replaceAll(' ', '');
Without regexp, it works fine.
input = input.replace(' ', '');
Why not use simply this !? This is faster as simple !
var output = '/var/www/site/Brand new document.docx'.replace(/ /g, "");
or
var output = '/var/www/site/Brand new document.docx'.replace(/ /gi,"");
Note: Though you use 'g' or 'gi' for removing spaces both behaves the same.
If we use 'g' in the replace function, it will check for the exact match. but if we use 'gi', it ignores the case sensitivity.
for reference click here.
Regex + Replace()
Although regex can be slower, in many use cases the developer is only manipulating a few strings at once so considering speed is irrelevant. Even though / / is faster than /\s/, having the '\s' explains what is going on to another developer perhaps more clearly.
let string = '/var/www/site/Brand new document.docx';
let path = string.replace(/\s/g, '');
// path => '/var/www/site/Brandnewdocument.docx'
Split() + Join()
Using Split + Join allows for further chained manipulation of the string.
let string = '/var/www/site/Brand new document.docx';
let path => string.split('').map(char => /(\s|\.)/.test(char) ? '/' : char).join('');
// "/var/www/site/Brand/new/document/docx";
Using replaceAll
seems like the simplest cleanest way. (I can't vouch for fastest)
'/var/www/site/Brand new document.docx'.replaceAll(' ', '')
See docs.
The replaceAll() method returns a new string with all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function to be called for each match.
var str = '/var/www/site/Brand new document.docx'; document.write( str.replace(/\s\/g, '') ); ----------
You can use regex to remove spaces from string`
let str = '/var/www/site/Brand new document.docx';
let result = str.replace(/\s/g, '');
your_string = 'Hello world';
words_array = your_tring.split(' ');
string_without_space = '';
for(i=0; i<words_array.length; i++){
new_text += words_array[i];
}
console.log("The new word:" new_text);
The output:
HelloWorld
Success story sharing
.replace(/\s+/g, '')
more often. Is there a difference between that and my answer?.replace(' ','')
would work. Much appreciated!+
has only 60 votes if anyone wants to credit him/her too stackoverflow.com/a/5964427/4258817.replace('/\s+/g', '')
because it'll try to find that literal string. This tripped me up before...\s
(whitespace) is not the same as a normal space. This also include the characters linefeed, carriage return, tab, vertical tab, form feed and others. For more info have a look at the JavaScript RegExp special characters.