How to remove spaces in a string? For instance:
Input:
'/var/www/site/Brand new document.docx'
Output:
'/var/www/site/Brandnewdocument.docx'
This question is related to
javascript
text
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, '')
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 string similar to examples from OP question
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.
For string about ~3 milion character results are:
You can run it on your machine: https://jsperf.com/remove-string-spaces/1
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";
var str = '/var/www/site/Brand new document.docx';
document.write( str.replace(/\s\/g, '') );
----------
_x000D_
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.
var input = '/var/www/site/Brand new document.docx';
//remove space
input = input.replace(/\s/g, '');
//make string lower
input = input.toLowerCase();
alert(input);
var a = b = " /var/www/site/Brand new document.docx ";_x000D_
_x000D_
console.log( a.split(' ').join('') );_x000D_
console.log( b.replace( /\s/g, '') );
_x000D_
Two ways of doing this!
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
easy way
someString.replace(' ', '');
Source: Stackoverflow.com