提交后重置表格

I have a form which if the email is wrong gives me an error message while i stay on the same page, this is possible because i used ajax. Now I'm trying to achieve when i submit the form and the return is an error that the forms reset.

I tried reset(); but it didn't work.

<?php
    header("Refresh:7; url=contact.php");
    $email = $_POST['subscribefield'];

    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        echo "Dit emailadres klopt niet";
      reset($email);
    }


    $to = "flash1996mph@hotmail.com";
    $subject = "Abonee voor de nieuwsbrief";
    $body = "$email 
 Heeft zich aangemeld voor de nieuwsbrief";

    mail($to, $subject, $body);
    echo "U heeft zich zojuist aangemeld voor de vandenberg nieuwsbrief";
?>

and

$('form.subscribe').on('submit', function() {
    var that = $(this),
    url = that.attr('action'),
    method = that.attr('method'),
    data = {};

    that.find('[name]').each(function(index, value) {
        var that = $(this),
        name = that.attr('name'),
        value = that.val();

        data[name] = value;
    });

    $.ajax({
        url: url,
        type:method,
        data: data,
        success: function(response) {
            $('#success-message').html(response).show();
            setTimeout(function() {
                $('#success-message').fadeOut('slow');
            }, 2000); 
        }
    });
    return false;
});

Put this button inside your <form>:

<input type="reset" value="Reset Form" id="resetButton" >

and make a click on this button whenever you find error in return like this,

$("#resetButton").click();

I do something like if the ajax call was success, but something went wrong, then reset the form on the client side.

For example:

success: function(resp) {
    // if the form is invalid
    if (resp.invalid) {
        // find your elems
        $('#myForm').find('input[type=text]').val("");
    }
}

On the other hand you should validate the form firstly on the client side then on the server too. For example this library can be very useful.

If what you really want to do is to empty the form values try:

$(':input','form.subscribe')
 .not(':button, :submit, :reset, :hidden')
 .val('') .removeAttr('checked')
 .removeAttr('selected');