Valid email address in JavaScript using RegularExpression

Question

I have to valid email address in JavaScript. My method is

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

    return re.test(email);
}

Issue is that Visual Studio is not accepting the Regular Expression and giving error when i run the application. The error is

Answer 1

Try escaping @ . @@ will render as @

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

    return re.test(email);
}

Answer 2

试试这个正则表达式：

^\w+([.]\w+)*@\w+([.]\w+)+$