小编Pet*_*rtt的帖子

我正在尝试实现拖放操作以在文章计划系统中更改日期。我希望用户能够将文章条目从一个日期拖到另一个日期，然后应自动更新时间表。这是我的代码：

<script type="text/javascript">
    $(function () {
        $(".scheduledArticleRow").draggable({
            cursor: "move",
            cursorAt: { top: -12, left: -20 },
            opacity: 0.5,
            helper: function (event) {
                return $("<div class='ui-widget-header'>" + $(this).data('title') + "</div>")
            }
        });
        $(".articleNeededRow").droppable();
        $(".reservedDateRow").droppable();

        $(".scheduledArticleRow").off("dragstart").on("dragstart", function (e) {
            console.log("dragstart");
            e.dataTransfer.setData("articleId", $(this).data("articleId"));    // Uncaught TypeError: Cannot call method 'setData' of undefined 
            e.dataTransfer.setData("oldDate", $(this).data("date"));        // Uncaught TypeError: Cannot call method 'setData' of undefined
            e.originalEvent.dataTransfer.setData("articleId", $(this).data("articleId"));    // Uncaught TypeError: Cannot call method 'setData' of undefined 
            e.originalEvent.dataTransfer.setData("oldDate", $(this).data("date"));            // Uncaught TypeError: Cannot call method 'setData' …