I am trying to create a regular expression in JavaScript which contains all alphabet, % and _. I have written this regex for that which is not working fine. Can anyone help me with this?
Here is my Regex:
^[^.<>(){}'&@#]*$
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Why do you use a character class to exclude a random set of symbols instead of "translating" your actual requirement into an regular expression?Andreas– Andreas2021-01-13 06:57:41 +00:00Commented Jan 13, 2021 at 6:57
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Also, "not working fine" is not a useful description of a problem. What do you want to do, what is the text, what do you expect to happen and what is happening instead?Amadan– Amadan2021-01-13 06:59:00 +00:00Commented Jan 13, 2021 at 6:59
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1 Answer
Here is the regex you are looking for:
const regex = /[A-Za-z_%]/g
Explanation:
/.../ - Javascript regex literal syntax
[...] - A group of possible matches (exp. A or B or C etc.)
A-Za-z - Every English letter. (Upper & lower case)
_ - Underscore char
% - The % char.
g - Global flag suffix to keep matching every res.
You can try it in Regex tester
5 Comments
Ashwani kumar
but if You add numbers it is also taking that, that has to be avoided.
Ashwani kumar
It's working fine, but I am using this regex in angular Validators.pattern("/[A-Za-z_%]/g"), in that case it doesn't work properly, can you just let me know why?
Oskar Grosser
@Ashwanikumar It's not a String, it is a regular expression. It's literals are the forward-slashes
/PATTERN/, whereas the String literals are the quotes 'String'/"String".Amit Hadary
@Ashwanikumar what Oskar said is correct but I'm not sure it's clear. Remove the "" and use it like: Validators.pattern(/[A-Za-z_%]/g)
Ashwani kumar
I Added like this Validators.pattern("[A-Za-z_%]") it's working fine Thankyou.