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Timeline for How can I validate an email address in JavaScript?

Current License: CC BY-SA 4.0

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Aug 31, 2023 at 18:18 history edited Ben CC BY-SA 4.0
wording
Aug 27, 2023 at 15:19 comment added wpmarts function validateEmail(email) { // Regular expression pattern for email validation const pattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/; return pattern.test(email); } // Test the function const email = "[email protected]"; if (validateEmail(email)) { console.log("Email is valid."); } else { console.log("Email is not valid."); }
Aug 22, 2023 at 18:41 comment added Lucian @GautamParmar, actually [email protected] is valid. If you have a gmail account, test it (add a + before @ in yours).
Mar 24, 2023 at 12:03 history edited Graham John CC BY-SA 4.0
Improved the legibility of the answer: rephrased it for brevity, and corrected the grammar.
Jul 17, 2022 at 8:55 history edited Idrizi.A CC BY-SA 4.0
add snippet
Apr 29, 2022 at 12:47 comment added Gabriel Chaves Becchi Invalidates valid emails, such as [email protected]
Mar 17, 2022 at 20:20 history edited Mario Varchmin CC BY-SA 4.0
Fixed a typo
Jan 26, 2022 at 14:05 history edited Nero Vanbiervliet CC BY-SA 4.0
First line of code block had invalid JS syntax (forgot to open function body)
Nov 25, 2021 at 12:53 history edited theProCoder CC BY-SA 4.0
improved formatting
Nov 5, 2021 at 9:01 comment added Code Cooker this is invalid sean.o'[email protected] and your code couldn't verify that, It says valid email.
Oct 17, 2021 at 23:29 comment added PlexQ @lasmini Gomes this regex is hopelessly naive. brian@li is a valid email address. also [email protected] is also valid. Also [email protected] is also valid. And is use A LOT by testers because the +123 is ignored by gmail.
Sep 24, 2021 at 12:26 comment added Iasmini Gomes This kind of email [email protected] is not validated by the regex from the answer. I've tested this one and it worked: ^[\w.]+@[a-z]+.\w{2,3}$
Aug 16, 2021 at 6:35 comment added Abhi Beckert @KevinFegan You can't validate an email address, but you can recognise obviously invalid ones. Basically anything that will stop your outgoing mail server from even attempting to send the message.
Aug 6, 2021 at 6:33 comment added Gautam Parmar [email protected] - showing is valid which should not
Jul 16, 2021 at 23:02 comment added undefined @KevinFegan let's be realistic: you would not be using JavaScript to confirm whether an e-mail is authentic. I see this validation as perfectly reasonable when a user signs up. You probably do not want to bother sending verification e-mails to addresses that cannot possibly exist. Some might also have outbound e-mail limits, making it north worth it to send e-mails to email@localhost, i don't have an email or any other funny user inputs.
Jul 16, 2021 at 22:56 history edited undefined CC BY-SA 4.0
form submission redirects the snippet away, use `input` event for simpler "live" results
Dec 13, 2020 at 17:37 history edited Robert Hovhannisyan CC BY-SA 4.0
There was a 2 useless escapes according to ESlint
May 24, 2020 at 18:07 history edited Mathyou CC BY-SA 4.0
Changed all 'var' to 'const', the modern convention for Javascript.
Mar 21, 2019 at 11:46 history edited frzsombor CC BY-SA 4.0
".bind()" is deprecated as of jQuery 3.0, use ".on()" instead
Jan 18, 2019 at 1:20 history edited Elias Zamaria CC BY-SA 4.0
Fixed Chromium link
Dec 18, 2018 at 14:04 history edited Prakash Pazhanisamy CC BY-SA 4.0
removed space
Oct 8, 2018 at 12:11 review Suggested edits
Oct 8, 2018 at 13:08
Mar 16, 2018 at 21:33 history edited gyo CC BY-SA 3.0
Little jQuery improvement
Jan 25, 2018 at 22:53 history edited Alexander Mills CC BY-SA 3.0
added 8 characters in body
Dec 13, 2017 at 18:55 history edited itsdarrylnorris CC BY-SA 3.0
Adding support non cases sensitive emails by lower casing the email before running the test.
Oct 10, 2017 at 12:33 history edited alexkasko CC BY-SA 3.0
fixed, what I beleive is a typo in first regex, escaping closing bracket after @
Oct 9, 2017 at 4:23 review Suggested edits
Oct 9, 2017 at 5:10
Dec 23, 2016 at 0:36 review Suggested edits
Dec 23, 2016 at 1:13
Dec 13, 2016 at 10:36 history edited albciff CC BY-SA 3.0
change submit event to click event because the generated iframe to run the code snippet is blocked due to: "is sandboxed and the 'allow-forms' permission is not set."
Sep 16, 2016 at 13:38 review Suggested edits
Sep 16, 2016 at 15:57
Jun 20, 2016 at 15:26 review Suggested edits
Jun 20, 2016 at 16:04
Jun 2, 2016 at 16:58 history edited Manuel Araoz CC BY-SA 3.0
small fix in snippet
Jun 2, 2016 at 14:05 history edited rnevius CC BY-SA 3.0
added 1025 characters in body
Mar 3, 2016 at 10:53 history edited Endless CC BY-SA 3.0
added a bunch of existing tests
Feb 9, 2016 at 10:52 history edited Yura CC BY-SA 3.0
forgotten to escape here to
Feb 9, 2016 at 10:37 history edited Yura CC BY-SA 3.0
I don't know why it works in js but in java in won't compile cause illegal to have "[[" construction and you need to escape like "[\["
Dec 7, 2015 at 10:48 history edited Piskvor left the building CC BY-SA 3.0
reverted Rev7, as it introduces completely unrelated behavior ("TLDs are never >8 characters")
Dec 7, 2015 at 10:47 history rollback Piskvor left the building
Rollback to Revision 7
Jul 9, 2015 at 17:27 history edited Kee CC BY-SA 3.0
Add updated example regexp from demo that works for unicode email addresses.
Mar 30, 2015 at 7:02 review Suggested edits
Mar 30, 2015 at 7:24
Mar 30, 2015 at 6:32 review Suggested edits
Mar 30, 2015 at 6:55
Mar 30, 2015 at 5:52 review Suggested edits
Mar 30, 2015 at 6:21
S Mar 27, 2015 at 7:54 history suggested CommunityBot CC BY-SA 3.0
We dont have use any special characters for this email address.
Mar 27, 2015 at 7:25 review Suggested edits
S Mar 27, 2015 at 7:54
Mar 9, 2015 at 0:34 history edited SeanCannon CC BY-SA 3.0
removed redundant character escapes
Apr 8, 2014 at 12:24 review Suggested edits
Apr 8, 2014 at 12:25
Apr 8, 2014 at 12:20 review Suggested edits
Apr 8, 2014 at 12:21
Apr 8, 2014 at 12:16 review Suggested edits
Apr 8, 2014 at 12:18
Feb 1, 2014 at 8:49 comment added Kevin Fegan You cannot validate email addresses, period. The only one who can validate an email address is the provider of the email address. For example, this answer says these email addresses: %[email protected], "%2"@gmail.com, "a..b"@gmail.com, "a_b"@gmail.com, [email protected], [email protected] , [email protected] are all valid, but Gmail will never allow any of these email addresses. You should do this by accepting the email address and sending an email message to that email address, with a code/link the user must visit to confirm validity.
Jan 23, 2014 at 17:01 history edited Eduardo Ponce de Leon CC BY-SA 3.0
When copying pasting the function spaces on the regular expression give errors, I put it all together
Jan 16, 2014 at 23:58 review Suggested edits
Jan 17, 2014 at 0:00
Sep 11, 2013 at 2:21 history made wiki Post Made Community Wiki by pera
Aug 24, 2013 at 20:41 history edited Peter Mortensen CC BY-SA 3.0
Copy edited.
Mar 29, 2013 at 17:39 review Suggested edits
Mar 29, 2013 at 17:42
Nov 1, 2012 at 7:27 review Suggested edits
Nov 1, 2012 at 7:36
Oct 26, 2012 at 6:32 comment added Vroo This doesn't even accept the examples in RFC 822. Some simple cases it doesn't match a\@[email protected], a(b)@c.com. See the RFC for more. Here's a regex that won't reject any valid addresses [^@]+@[^@]+\.[^@]+ and protects against common errors.
Jan 17, 2012 at 7:04 review Suggested edits
Jan 17, 2012 at 7:52
Jan 12, 2012 at 12:27 history edited ripper234 CC BY-SA 3.0
Add a live demo
Sep 25, 2011 at 9:18 history edited Yi Jiang CC BY-SA 3.0
deleted 1 characters in body
Sep 8, 2010 at 2:34 comment added Randal Schwartz This regex eliminates valid, in-use emails. Do not use. Google for "RFC822" or "RFC2822" to get a proper regex.
Sep 5, 2008 at 17:47 vote accept pix0r
Sep 5, 2008 at 16:15 history answered John Rutherford CC BY-SA 2.5
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