jQuery UI可拖动并在拖动事件上添加类 [英] jQuery UI draggable and adding class on drag event

问题描述

我正在尝试使用jQuery UI将类添加到可拖动事件中.

I am trying to add a class to the draggable event using jQuery UI.

但是我编写的以下代码无法正常工作；

However the following code that I've written is not working as expected;

$(function () {
    $('ul.sortable div.draggable').draggable({
        start: function(event, ui) { ui.helper.addClass('move'); },
    });
});

基本上，我试图在div.draggable中添加一个阴影(使用move类).拖动事件有效时我在做什么错，但是没有出现阴影?

Essentially I am trying to add a drop shadow (using the move class) to the div.draggable. What am I doing wrong as the drag event works, but the drop shadow does not appear?

先谢谢了.

推荐答案

来自 jQuery UI Draggable文档:

.在拖动期间，该元素还会获得一类ui-draggable-dragging

. During drag the element also gets a class of ui-draggable-dragging

您可以只编写CSS来利用该类，而不是尝试添加一个类.

You could just write the CSS to leverage this class as opposed to trying to add a class.

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