jQuery的。 无法识别克隆的元素

Question

I'm cloning some div by jQuery .clone(true) and inserting cloned element as last one, but then, when I'm trying to use selector :last for this element it's not working. Console do not show any error. Here is how I clone element:

            $("div.addnewitem").on('click', function () {
                var $d = $("#example").clone(true);
                $($d).removeAttr("style");
                $($d).insertAfter("div.item:last");
                $('html, body').animate({
                    scrollTop: $("div.item:last").offset().top
                }, 2000);
            });

This is element to clone:

<div id="example" style="display: none;" class="item">
        <div class="deleteitem">
            <img alt="" src="../img/deleteitem.png">
        </div>
        <div class="itemphoto">
            <img alt="" src="../img/woolrich.png">
        </div>
        <div class="bigshadow">
            <img alt="" src="../img/bigshadow.png">
        </div>
        <div class="about">
            <input type="text" class="link" placeholder="Ссылка на изображение" name="item_image" />
            <input type="text" class="name" placeholder="Вещь и бренд..." name="item_name">
            <textarea class="review" placeholder="Короткое описание (около 120 символов)..." name="item_desc"></textarea>
            <input type="text" class="link" placeholder="Ссылка на вещь..." name="item_url">
            <input type="text" class="pricestylist" placeholder="Цена (xxx руб/$)" name="item_price">
        </div>
    </div>

An here is the way how I want to manipulate cloned element:

$("input[name='item_url']:last").change(function (event) {
                if ($("#setname").val() != "") {
                    if ($("input[name='item_url']:last").val() != null) {
                        $.ajax({
                            url: '../ParseShop.asmx/ParseFott',
                            cache: false,
                            type: 'POST',
                            dataType: 'json',
                            contentType: 'application/json; charset=utf-8',
                            data: "{'urlstring':'" + $("input[name='item_url']:last").val() + "'}",
                            success: function (msg) {
                                $("textarea[name='item_desc']:last").val($.trim(msg.d.ItemDescription));
                                $("input[name='item_name']:last").val($.trim(msg.d.ItemName));
                                $("input[name='item_price']:last").val($.trim(msg.d.ItemPrice));
                                $("input[name='item_image']:last").val($.trim(msg.d.ItemImageUrl));
                                $("img[id='itemimg']:last").attr('src', $.trim(msg.d.ItemImageUrl));
                            },
                            error: function (xhr, status, error) {
                                var err = eval("(" + xhr.responseText + ")");
                                alert(err.Message);
                            }
                        });
                    }
                    else {
                        alert("Вы забыли ввести ссылку на товар!");
                        $("input[name='item_url']:last").focus();
                        event.stopPropagation();
                    }
                }
                else {
                    alert("Вы забыли название комплекта!");
                    $("#setname").focus();
                    event.stopPropagation();
                }
            });

PS Cloning function are working fine - I can clone and delete cloned elements, but why :last not working I do not have any idea.

Answer 1

Well, here is the solution that working for me.

$("div.item").on('change', 'input[name="item_url"]', function (event) {
                if ($("#setname").val() != "") {
                    if ($(this).val() != null) {
                        $.ajax({
                            url: '../ParseShop.asmx/ParseFott',
                            cache: false,
                            type: 'POST',
                            dataType: 'json',
                            contentType: 'application/json; charset=utf-8',
                            data: "{'urlstring':'" + $("input[name='item_url']:last").val() + "'}",
                            success: function (msg) {
                                $("div.item:last textarea[name='item_desc']").val($.trim(msg.d.ItemDescription));
                                $("div.item:last input[name='item_name']").val($.trim(msg.d.ItemName));
                                $("div.item:last input[name='item_price']").val($.trim(msg.d.ItemPrice));
                                $("div.item:last input[name='item_image']").val($.trim(msg.d.ItemImageUrl));
                                $("div.item:last img[id='itemimg']").attr('src', $.trim(msg.d.ItemImageUrl));
                            },
                            error: function (xhr, status, error) {
                                var err = eval("(" + xhr.responseText + ")");
                                alert(err.Message);
                            }
                        });
                    }
                    else {
                        alert("Вы забыли ввести ссылку на товар!");
                        $("input[name='item_url']:last").focus();
                        event.preventDefault();
                    }
                }
                else {
                    alert("Вы забыли название комплекта!");
                    $("#setname").focus();
                    event.preventDefault();
                }
            });

PS Based on Brian answer. Brian, you may add your comment as answer.