Html form tabindex enter press control by Jquery

Html form tabindex control by Jquery, follow below code: 
*note: this below code actually a hint, programmers can understand how to use it:

<form id="form1" name="form1" action="saver.php" method="post">
        <label>Name:</label>
        <input name="name" value="" tabindex="1">
        <label>Roll:</label>
        <input name="roll" value="" tabindex="2">
        <label>Address:</label>
        <input name="address" value="" tabindex="3">
        <label>Phone:</label>
        <input name="phone" value="" tabindex="4">
        <label>Email:</label>
        <input name="email" value="" tabindex="5">
        <input type="submit" tabindex="6">

    </form>
----------------------------------------------------------------------------------------------
<script>
    $(document).ready(function () {
        $("#form1 input:first").focus();
        $('#form1').on('keydown', 'input', function (event) {
            if (event.which == 13) {            
                var $this = $(event.target);
                var index = parseFloat($this.attr('tabindex'));
                $('[tabindex="' + (index + 1).toString() + '"]').focus();
                if (index == 6) {
                    return true;
                }
                return false;
            }
        });
    });
</script>

raw query plan to get woocommerce order by specific user

First go to postmeta table with user id then you will get order id as post id then with those post id go to order_itemmeta table to get order details in row then with that order_itemmeta table you will get order_item_id with meta value, this meta value is your product id you can now get that product info by that product id in posts table now make a join query to get all those thing in one table :) Good luck!