获取jQuery Dropzone DIV的属性

Question

我的每个引导选项卡中都有dropzone（v3.7.1）div。

1. 如果仅在点击提交按钮（不使用每个dropzone的表单）后才能上传所有dropzones中的所有文件？当我将autoProcessQueue设置为false并尝试附加侦听器时，显示无法将事件附加到undefined的错误显示...
2. 如何获取dropzone对象的属性，例如的rel =＆＃34; 6＆＃34;第一个掉落区？尝试使用this.attr（＆＃39; rel＆＃39;）/ $（this）.attr（＆＃39; rel＆＃39;）会导致＆＃39; undefined＆＃39; ...

HTML

<form class="my-form" method="post">
    <input type="text" name="form-input-1" id="form-input-1" />
    <input type="text" name="form-input-2" id="form-input-2" />

    <div class="tab-content">
        <div class="tab-pane active" id="ic_6">
            <h3>Overview</h3>
            <div rel="6" class="dropzone" id="my-dropzone"></div>
        </div>
        <div class="tab-pane" id="ic_1">
            <h3>Living Room</h3>
            <div rel="1" class="dropzone" id="my-dropzone"></div>
        </div>
        <div class="tab-pane" id="ic_2">
            <h3>Kitchen</h3>
            <div rel="2" class="dropzone" id="my-dropzone"></div>
        </div>
        <div class="tab-pane" id="ic_3">
            <h3>Bathroom</h3>
            <div rel="3" class="dropzone" id="my-dropzone"></div>
        </div>
        <div class="tab-pane" id="ic_4">
            <h3>Bedroom</h3>
            <div rel="4" class="dropzone" id="my-dropzone"></div>
        </div>
        <div class="tab-pane" id="ic_5">
            <h3>Outdoors</h3>
            <div rel="5" class="dropzone" id="my-dropzone"></div>
        </div>
    </div>

    <button type="submit">Submit</button>
</form>

JS

Dropzone.options.myDropzone = {
    url: "upload.php", 
    maxFilesize: 2, // MB
    addRemoveLinks: true, 
    acceptedFiles: "image/*", 
    accept: function(file, done) {
        console.log("uploaded");
        done();
    },
    init: function() {
        this.on("addedfile", function(file) {
            //== divider ==//
            var dividerElement = Dropzone.createElement("<div>&nbsp;</div>");
            file.previewElement.appendChild(dividerElement);

            //== caption input : still trying to figure capturing this ==//
            var captionInput = Dropzone.createElement("<input type='text' name='caption' maxlength='50' placeholder='Enter a caption' />");
            file.previewElement.appendChild(captionInput);
        });

        this.on("removedfile", function(file) {
            $.ajax({
                url: "delete_temp_files.php",
                type: "POST",
                data: { filename: file.name }
            });
        });
    }
}