如何使用 jQuery 的 drop 事件上传从桌面拖动的文件?

2022-01-11 00:00:00 drag-and-drop jquery javascript html

是否可以使用 jQuery 的 drop 事件从桌面拖动文件?

Is it possible to use jQuery's drop event for dragging files from the desktop?

如果是这样,我如何获取丢弃的文件数据?

If so, how do I get the dropped file data?

推荐答案

有点乱(你需要处理至少 3 个事件)但可能.

It's a little messy (you need to handle at least 3 events) but possible.

首先,您需要为 dragoverdragover 添加事件处理程序,并阻止这些事件的默认操作:

First, you need to add eventhandlers for dragover and dragenter and prevent the default actions for these events like that:

$('#div').on(
    'dragover',
    function(e) {
        e.preventDefault();
        e.stopPropagation();
    }
)
$('#div').on(
    'dragenter',
    function(e) {
        e.preventDefault();
        e.stopPropagation();
    }
)

在这些事件上调用 preventDefault 实际上很重要,否则,某些浏览器可能永远不会触发 drop 事件.

It's actually important to call preventDefault on these events, otherwise, some browsers may never trigger the drop event.

然后您可以添加 drop-handler 并使用 e.originalEvent.dataTransfer.files 访问已删除的文件:

Then you can add the drop-handler and access the dropped files with e.originalEvent.dataTransfer.files:

$('#div').on(
    'drop',
    function(e){
        if(e.originalEvent.dataTransfer && e.originalEvent.dataTransfer.files.length) {
            e.preventDefault();
            e.stopPropagation();
            /*UPLOAD FILES HERE*/
            upload(e.originalEvent.dataTransfer.files);
        }
    }
);

现在您可以从 div 中的桌面/资源管理器/查找器中拖动文件并访问它们.

Now you are able to drag files from the desktop/explorer/finder in the div and access them.

http://jsfiddle.net/fSA4N/5/

相关文章