[jquery] Validate email with a regex in jQuery

Referring to this issue:

How can I set a minimum length for a field with jQuery?,

<form id="new_invitation" class="new_invitation" method="post" data-remote="true" action="/invitations" accept-charset="UTF-8">
    <div id="invitation_form_recipients">
        <input type="text" value="" name="invitation[recipients][]" id="invitation_recipients_0"><br>
        <input type="text" value="" name="invitation[recipients][]" id="invitation_recipients_1"><br>
        <input type="text" value="" name="invitation[recipients][]" id="invitation_recipients_2"><br>
        <input type="text" value="" name="invitation[recipients][]" id="invitation_recipients_3"><br>
    </div>
    <input type="submit" value="Send invitation" name="commit">
</form>

What would the code be for settting a minimum length for a field with jQuery?

$('#new_invitation').submit(function(event) {
    if ($('#invitation_form_recipients input').filter(function() {
        return $(this).val();
    }).length == 0) {
        // All the fields are empty
        // Show error message here

        // This blocks the form from submitting
        event.preventDefault();
    }
});

How can I validate that every field input have a valid email address with jQuery? In the above code?

---

The Solution!

$('#new_invitation').submit(function(e) { $('#invitation_form_recipients input').each(function(e) { email_address = $(this); email_regex = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/i; if(!email_regex.test(email_address.val())){ alert('this is not valid email'); e.preventDefault(); return false; } }); });

Email: {
                      group: '.col-sm-3',
                      enabled: false,
                      validators: {
                          //emailAddress: {
                          //    message: 'Email not Valid'
                          //},
                          regexp: {
                              regexp: '^[^@\\s]+@([^@\\s]+\\.)+[^@\\s]+$',
                              message: 'Email not Valid'
                          },
                      }
                  },

This : /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/i is not working for below Gmail case

[email protected] [email protected]

Below Regex will cover all the E-mail Points: I have tried the all Possible Points and my Test case get also pass because of below regex

I found this Solution from this URL:

Regex Solution link

/(?:((?:[\w-]+(?:\.[\w-]+)*)@(?:(?:[\w-]+\.)*\w[\w-]{0,66})\.(?:[a-z]{2,6}(?:\.[a-z]{2})?));*)/g

function mailValidation(val) {
    var expr = /^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/;

    if (!expr.test(val)) {
        $('#errEmail').text('Please enter valid email.');
    }
    else {
        $('#errEmail').hide();
    }
}

This regex can help you to check your email-address according to all the criteria which gmail.com used.

var re = /^\w+([-+.'][^\s]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;

var emailFormat = re.test($("#email").val()); // This return result in Boolean type

if (emailFormat) {}