Remove Whitespaces Inside a String in JavaScript

Remove whitespaces inside a string in javascript

For space-character removal use

"hello world".replace(/\s/g, "");

for all white space use the suggestion by Rocket in the comments below!

Remove ALL white spaces from text

You have to tell replace() to repeat the regex:

.replace(/ /g,'')

The g character makes it a "global" match, meaning it repeats the search through the entire string. Read about this, and other RegEx modifiers available in JavaScript here.

If you want to match all whitespace, and not just the literal space character, use \s instead:

.replace(/\s/g,'')

You can also use .replaceAll if you're using a sufficiently recent version of JavaScript, but there's not really any reason to for your specific use case, since catching all whitespace requires a regex, and when using a regex with .replaceAll, it must be global, so you just end up with extra typing:

.replaceAll(/\s/g,'')

JS: How to remove white spaces only from inside of string

You may match and capture the leading/trailing whitespaces and restore in the result with the backreferences, and remove all other whitespaces.

var str = "   some text  ";str = str.replace(/(^\s+|\s+$)|\s+/g, '$1');console.log("'",str,"'");

How to remove spaces from a string using JavaScript?

This?

str = str.replace(/\s/g, '');

Example

var str = '/var/www/site/Brand new document.docx';
document.write( str.replace(/\s/g, '') );

How to remove the extra spaces in a string?

You're close.

Remember that replace replaces the found text with the second argument. So:

newString = string.replace(/\s+/g,''); // "thiscontainsspaces"

Finds any number of sequential spaces and removes them. Try replacing them with a single space instead!

newString = string.replace(/\s+/g,' ').trim();

Remove all white space from string JavaScript

Use this:

str.replace(/\s+/g, '');

Instead of this:

str.trim()

How to remove the white space at the start of the string

This is what you want:

function ltrim(str) {
  if(!str) return str;
  return str.replace(/^\s+/g, '');
}

Also for ordinary trim in IE8+:

function trimStr(str) {
  if(!str) return str;
  return str.replace(/^\s+|\s+$/g, '');
}

And for trimming the right side:

function rtrim(str) {
  if(!str) return str;
  return str.replace(/\s+$/g, '');
}

Or as polyfill:

// for IE8
if (!String.prototype.trim)
{
    String.prototype.trim = function ()
    {
        // return this.replace(/^\s+|\s+$/g, '');
        return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
    };
}

if (!String.prototype.trimStart)
{
    String.prototype.trimStart = function ()
    {
        // return this.replace(/^\s+/g, '');
        return this.replace(/^[\s\uFEFF\xA0]+/g, '');
    };
}

if (!String.prototype.trimEnd)
{
    String.prototype.trimEnd = function ()
    {
        // return this.replace(/\s+$/g, '');
        return this.replace(/[\s\uFEFF\xA0]+$/g, '');
    };
}

Note:

\s: includes spaces, tabs \t, newlines \n and few other rare characters, such as \v, \f and \r.

\uFEFF: Unicode Character 'ZERO WIDTH NO-BREAK SPACE' (U+FEFF)

\xA0: ASCII 0xA0 (160: non-breaking space) is not recognised as a space character

How to remove whitespace from a string in typescript?

Problem

The trim() method removes whitespace from both sides of a string.

Source

Solution

You can use a Javascript replace method to remove white space like

"hello world".replace(/\s/g, "");

Example

var out = "hello world".replace(/\s/g, "");console.log(out);

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