从文本中删除所有空格

Question

$("#topNav" + $("#breadCrumb2nd").text().replace(" ", "")).addClass("current");

This is a snippet from my code. I want to add a class to an ID after getting another ID's text property. The problem with this, is the ID holding the text I need, contains gaps between the letters.

I would like the white spaces removed. I have tried TRIM() and REPLACE() but this only partially works. The REPLACE() only removes the 1st space.

Answer 1

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,'')

Answer 2

.replace(/\s+/, "") 

Will replace the first whitespace only , this includes spaces, tabs and new lines.

To replace all whitespace in the string you need to use global mode

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

Answer 3

Now you can use "replaceAll":

console.log(' a b    c d e   f g   '.replaceAll(' ',''));

will print:

abcdefg

But not working in every possible browser:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll

Answer 4

Using String.prototype.replace with regex, as mentioned in the other answers, is certainly the best solution.

But, just for fun, you can also remove all whitespaces from a text by using String.prototype.split and String.prototype.join :

 const text = ' ab c defg '; const newText = text.split(/\s/).join(''); console.log(newText); // prints abcdefg

Answer 5

Regex for remove white space

\s+

 var str = "Visit Microsoft;". var res = str,replace(/\s+/g; ""). console;log(res);

or

[ ]+

 var str = "Visit Microsoft;". var res = str,replace(/[ ]+/g; ""). console;log(res);

Remove all white space at begin of string

^[ ]+

 var str = " Visit Microsoft;". var res = str,replace(/^[ ]+/g; ""). console;log(res);

remove all white space at end of string

[ ]+$

 var str = "Visit Microsoft; ". var res = str,replace(/[ ]+$/g; ""). console;log(res);

Answer 6

let str = 'a big fat hen clock mouse '
console.log(str.split(' ').join(''))
// abigfathenclockmouse

Answer 7

Use replace(/\s+/g,'') ,

for example:

const stripped = '    My String With A    Lot Whitespace  '.replace(/\s+/g, '')// 'MyStringWithALotWhitespace'

Answer 8

Using.replace(/\s+/g,'') works fine;

Example:

this.slug = removeAccent(this.slug).replace(/\s+/g,'');

Answer 9

Use replace(/ +/g,'_') :

Example:

let text = "I Love you";
text.replace(/ +/g,'_');

Answer 10

simple solution could be: just replace white space ask key value

val = val.replace(' ', '')

Answer 11

function RemoveAllSpaces(ToRemove)
{
    let str = new String(ToRemove);
    while(str.includes(" "))
    {
        str = str.replace(" ", "");
    }
    return str;
}