I'm trying to figure out the regular expression that will match any character that is not a letter or a number. So characters such as (,,@,£,() etc ...
Once found I want to replace it with a blank space.
Any advice.
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regex
try doing str.replace(/[^\w]/); It will replace all the non-alphabets and numbers from your string!
Edit 1: str.replace(/[^\w]/g, ' ')
This regular expression matches anything that isn't a letter, digit, or an underscore (_
) character.
\W
For example in JavaScript:
"(,,@,£,() asdf 345345".replace(/\W/g, ' '); // Output: " asdf 345345"
To match anything other than letter or number or letter with diacritics like é
you could try this:
[^\wÀ-úÀ-ÿ]
And to replace:
var str = 'dfj,dsf7é@lfsd .sdklfàj1';
str = str.replace(/[^\wÀ-úÀ-ÿ]/g, '_');
Inspired by the top post with support for diacritics
You are looking for:
var yourVar = '1324567890abc§$)%';
yourVar = yourVar.replace(/[^a-zA-Z0-9]/g, ' ');
This replaces all non-alphanumeric characters with a space.
The "g" on the end replaces all occurrences.
Instead of specifying a-z (lowercase) and A-Z (uppercase) you can also use the in-case-sensitive option: /[^a-z0-9]/gi
.
Have you tried str = str.replace(/\W|_/g,'');
it will return a string without any character and you can specify if any especial character after the pipe bar |
to catch them as well.
var str = "1324567890abc§$)% John Doe #$@'.replace(/\W|_/g, '');
it will return str = 1324567890abcJohnDoe
or look for digits and letters and replace them for empty string (""):
var str = "1324567890abc§$)% John Doe #$@".replace(/\w|_/g, '');
it will return str = '§$)% #$@';
To match anything other than letter or number you could try this:
[^a-zA-Z0-9]
And to replace:
var str = 'dfj,dsf7lfsd .sdklfj';
str = str.replace(/[^A-Za-z0-9]/g, ' ');
/[A-Z]/ig
/[^A-Z]/ig
/[0-9]/g
or /\d+/g
/[^0-9]/g
or /\D+/g
/[^A-Z0-9]/ig
There are other possible patterns
Just for others to see:
someString.replaceAll("([^\\p{L}\\p{N}])", " ");
will remove any non-letter and non-number unicode characters.
This is way way too late, but since there is no accepted answer I'd like to provide what I think is the simplest one: \D - matches all non digit characters.
var x = "123 235-25%";_x000D_
x.replace(/\D/g, '');
_x000D_
Results in x: "12323525"
See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
Source: Stackoverflow.com