Exceptional regex for email id validation in JavaScript

Sunday, May 19, 2024

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Exceptional regex for email id validation in JavaScript

rated 0 times [ 176] [ 2] / answers: 1 / hits: 5879 / 3 Years ago, mon, may 3, 2021, 12:00:00

What could be the Regex for accepting .@. as a valid email id? Also need to check the below conditions.

Should contain exactly one @ character.

Before and after @ should consist of at least 1 and at most 64 characters comprising only letters, digits and/or dots(a-z, A-Z, 0-9, .).

was trying with b[w.-]+@[w.-]+.[w]{0,0} but not working as expected.

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Answers

9

/^[a-z0-9.]{1,64}@[a-z0-9.]{1,64}$/i should do the trick (Regex101 explanation):

function demo(str) {

  const isEmail = /^[a-z0-9.]{1,64}@[a-z0-9.]{1,64}$/i.test(str);

  console.log(isEmail, str);

}



demo('.@.'); // OK

demo('[email protected]'); // OK

demo('a-b_c@a_b'); // Bad chars

demo('a.b.c'); // No @

demo('1234567890123456789012345678901234567890123456789012345678901234@a'); // OK

demo('12345678901234567890123456789012345678901234567890123456789012345@a'); // Too long

[#1401] Sunday, April 25, 2021, 3 Years [reply] [flag answer]

answered 3 Years ago

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