validating email address using regular expression on razor page

Question

Hi I am using razor and trying to use regular expression to validate email address here the validation function

function validateEmail(txtEmail){
   var a = doc         


        

Answer 1

It is common to check the format of the email is valid or not. To validate email address we need to use regular expression. In MVC razor we should use @@ symbol to perform validation. MVC razor:

var emailRegEx = /^(([^<>()[]\.,;:\s@@\"]+(.[^<>()[]\.,;:\s@@\"]+)*)|(\".+\"))@@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$/;

Normal Html:

For normal we should use @ symbol to perform validation

var emailRegEx = /^(([^<>()[]\.,;:\s@\"]+(.[^<>()[]\.,;:\s@\"]+)*)|(\".+\"))@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}])|(([a-zA-Z-0-9]+.)+[a-zA-Z]{2,}))$/;

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Answer 2

Unicode may work like this

string filter = "/^[a-zA-Z0-9_.-]+\\u0440[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{0,4}$/";

Alternatively in razor @@ is a normal @ symbol, it should work in your javascript.

string filter = "/^[a-zA-Z0-9_.-]+@@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{0,4}$/";

Answer 3

try this may be help you

function validateEmail(email) { 
    var re = /^[_a-z0-9-A-Z-]+(\.[_a-z0-9-A-Z-]+)*@[a-z0-9-A-Z-]+(\.[a-z0-9-A-Z-]+)*(\.[a-z]{2,4})$/;
    return re.test(email);
}