Skip to content

Instantly share code, notes, and snippets.

@gabrielfroes

gabrielfroes/emailmask.js

Created February 21, 2018 14:57
Show Gist options
  • Save gabrielfroes/282b2f38c7888eaacfc07ca3997e72fa to your computer and use it in GitHub Desktop.
Save gabrielfroes/282b2f38c7888eaacfc07ca3997e72fa to your computer and use it in GitHub Desktop.
Download ZIP
Javascript Email Mask
Raw
emailmask.js
/*
Create a Mask in an email address
This function create a mask using a valid email address.
This is usefull when someone need to confirm the email used in a system
Author: Gabriel Froes - https://gist.github.com/gabrielfroes
*/
function emailMask(email) {
var maskedEmail = email.replace(/([^@\.])/g, "*").split('');
var previous = "";
for(i=0;i<maskedEmail.length;i++){
if (i<=1 || previous == "." || previous == "@"){
maskedEmail[i] = email[i];
}
previous = email[i];
}
return maskedEmail.join('');
}
// Usage:
// console.log ( emailMask("my.email@mydomain.com") );
// Output: my.e****@m*******.c**
@yhau1989
Copy link

excellent code 👌

@carlosavellar
Copy link

Excelwnte

@taitran26
Copy link

Perfect code, thanks!!! 💪

@neliocaa
Copy link

neliocaa commented Oct 3, 2022 •
edited

I add some changes to show one char before @

function emailMask(email: string) {
var maskedEmail = email.replace(/([^@\.])/g, '*').split('')
var previous = ''
let j = 0
for (let i = 0; i < maskedEmail.length; i++) {
if (i <= 1 || previous === '.') {
maskedEmail[i] = email[i]
} else if (maskedEmail[i] === '@') {
j = i - 1
maskedEmail[i] = email[j] + email[i] + email[i + 1]
}
previous = email[i]
}
return maskedEmail.join('')
}

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment