Revisions to How can I validate an email address in JavaScript?

added 74 characters in body

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edited Sep 29, 2021 at 11:04

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All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.includes('@')

Or, if you need to support IE/older browsers:

email.indexOf("@"'@') > 0

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") > 0

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.includes('@')

Or, if you need to support IE/older browsers:

email.indexOf('@') > 0

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

fully reverted with >0 instead of 1

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edited Sep 20, 2020 at 22:06

CodingYourLife

8.2k
6
58
73

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") > 10

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") > 1

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") > 0

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

Rollback to Revision 5

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edited Sep 20, 2020 at 22:04

CodingYourLife

8.2k
6
58
73

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") ===> 1

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") === 1

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.

All email addresses contain an 'at' (i.e. @) symbol. Test that necessary condition:

email.indexOf("@") > 1

Don't bother with anything more complicated. Even if you could perfectly determine whether an email is RFC-syntactically valid, that wouldn't tell you whether it belongs to the person who supplied it. That's what really matters.

To test that, send a validation message.