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We are using below regular expression to validate email address in java ^[\\w!#\\$'\\*\\+=\\?\\^\\/_~-]+(\\.[\\w!#\\$'\\*\\+=\\?\\^\\/_~-]+)*@([a-zA-Z0-9\\-]+\\.)+[A-Z]{2,4}$ and it worked fine with invalid email address [email protected]&^(*&^(*^2 but when I use the same regular expression in javascript , it doesn't work and failes with even valid email addresses . Please suggest what could be root cause of this mismatch?

for e.g. in javascript , I'm getting false value with below test conditional -

/^[\w!#\$'\*\+=\?\^\/~-]+(\.[\w!#\$'\*\+=\?\^\/~-]+)*@([a-zA-Z0-9\-]+\.)+ [A-Z]{2,4}$/.test("[email protected]")

Vivek Pradhan
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Raj
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  • Why don't you use a dedicated API for this (mailapi)? – fge Oct 27 '14 at 09:54
  • possible duplicate of [Using a regular expression to validate an email address](http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address) – Qantas 94 Heavy Oct 27 '14 at 09:59
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    sorry but it is not a duplicate . i can google and get regex from internet but my requirement is to use same regrx as used in java program which is not working . – Raj Oct 27 '14 at 10:03

2 Answers2

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You need to convert \\ to \ in Javascript regex literal:

/^[\w!#$'*+=?^\/~-]+(\.[\w!#$'*+=?^\/~-]+)*@([a-zA-Z0-9-]+\.)+[A-Z]{2,4}$/i.test("[email protected]")

Also many special regex characters like $, +, * etc. don't need to be escaped inside character class hence I have removed unnecessary escaping from your character class.

nhahtdh
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anubhava
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Try this, it works for me.

/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,6})$/.test('[email protected]');


<html>

<body>
  <script>
    var flag = /^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,6})$/.test('[email protected]');
  </script>
  <h5><script>document.write(flag)</script></h5>
</body>

</html>
ajitksharma
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