Jquery Email and Phone Validation reg ex

Validation for email:

function validateEmail($email) {

    var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;

    return emailReg.test($email);

}

Validation for Phone number :

function validatePhone(txtPhone) 
{
    var filter = /^[0-9-+]+$/;

    if (filter.test(txtPhone)) {

        return true;

        alert();

    }

    else {

        return false;

    }

}