Email REGEX checking on email format

Question

export const REGEX_EMAIL = /^\S+@\S+\.\S+$/;

I want to check email format like
email : [email protected] // passed
but 
email: [email protected] // should not pass
email: [email protected]#$@! // shuuld not pass

//but from now they pass How i add the REGX email format

score 1 · Accepted Answer · answered Jul 27 '21 at 06:49

I had created this function for my projects:

 isEmailValid(email) {
       const regularExpression = /[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]{2,3}/;
       return regularExpression.test(email);
  },

I use this site to test them: https://regexr.com/

score 0 · Answer 2 · answered Jul 27 '21 at 06:46

Using \S is a very broad match and matches any non whitespace char.

You can make the pattern slightly more specific using a character class at the end [a-z]{2,}$ and not match an @ sign twice using a negated character class [^@\s]

^[^@\s]+@[^@\s]+\.[a-z]{2,}$

Regex demo

Email REGEX checking on email format

2 Answers2