JQuery UI Draggable - 如何知道一个元素是可拖动的初始化？ [英] JQuery UI Draggable - How to know an element is draggable initialized?

问题描述

我的逻辑是

if( !this.draginited() ) // a drag-disabled element shouldn't get pass here, as it is inited
  this.draggable({...})

我搜索了很多，无法找到实现这种逻辑的方法，任何想法？

I searched a lot and couldn't find a way to implement this logic, any ideas?

推荐答案

也许有一种更简单的方法，但文档说：

Maybe there's an easier way, but the docs say:

Draggable元素获得
ui-draggable类

Draggable elements gets a class of ui-draggable

所以你可以做点什么喜欢：

so you could do something like:

if(!$("#foo").hasClass("ui-draggable")) {
    ...
}

所以将它包起来（未经测试）：

so to wrap that up (untested):

$.fn.isDraggable = function() {
    return $(this).hasClass("ui-draggable");
}

console.log($("#someElement").isDraggable());

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