Regular expression for validating email
If it doesn't find any matches then it will fail the validation and the function will return false, if the match returns true then the email will be of a correct format and the function will return true.
With the vast amount of complex, but valid email addresses that exist today, the only way to truly tell if an email address is valid is to send the email and see if it bounces.
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Anything beyond this is going to be too opinionated.
You could find some other solutions by googling around but I recommend re-thinking your approach if the above examples don’t work for you.
Through a list of examples , we will build a script to validate phone numbers , UK postal codes, along with more examples.
First, let’s start by building the webpage and the validation code then we will talk about the regular expressions used to validate the strings.