Invalid regular expression unmatched ')'

Asked Feb 08 '18 at 09:56

Active Feb 08 '18 at 09:56

Viewed 33 times

I wrote a regex that should match email addresses and it works great here https://regex101.com/r/nBl4Wc/2, but when I try to execute it using JavaScript it gives this error:

SyntaxError: Invalid regular expression Unmatched ')'

This is my code:

var myString = 'email_address=test.user@gmail.com';
var regex = new RegExp('(?:[a-z0-9+_~-]+(?:\.[a-z0-9+_~-]+)*)@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?|[a-z0-9-]*[a-z0-9]:+)\]');
var matched = myString.match(regex);

Why that regex isn't working with JavaScript?

I saw that there are other questions similar to this one, but I couldn't find a solution that would fix this issue...

asked Feb 08 '18 at 09:56

Valip

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Use the regex literal notation, `/pattern/`. – Wiktor Stribiżew Feb 08 '18 at 09:58
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Out of interest, why reinvent the wheel? Your sample is either too strict or too lax, see https://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address – Adrian Wragg Feb 08 '18 at 09:59
@WiktorStribiżew I tried that but is still not working – Valip Feb 08 '18 at 10:00
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[It does match your string](https://jsfiddle.net/hoorLyvu/). – Wiktor Stribiżew Feb 08 '18 at 10:02
@WiktorStribiżew Yes it works...I didn't remove " ' " when I tried that – Valip Feb 08 '18 at 10:06

Invalid regular expression unmatched ')'

0 Answers0