Dropzone.js和remove按钮

Question

我利用dropzone.js实现了文件上传功能。我像这样创建表单：

<form action="/target-url" id="my-dropzone" class="dropzone"></form>

<script>
  // myDropzone is the configuration for the element that has an id attribute
  // with the value my-dropzone (or myDropzone)
  Dropzone.options.myDropzone = {
    init: function() {
      this.on("addedfile", function(file) {

        // Create the remove button
        var removeButton = Dropzone.createElement("<button>Remove file</button>");


        // Capture the Dropzone instance as closure.
        var _this = this;

        // Listen to the click event
        removeButton.addEventListener("click", function(e) {
          // Make sure the button click doesn't submit the form:
          e.preventDefault();
          e.stopPropagation();

          // Remove the file preview.
          _this.removeFile(file);
          // If you want to the delete the file on the server as well,
          // you can do the AJAX request here.
        });

        // Add the button to the file preview element.
        file.previewElement.appendChild(removeButton);
      });
    }
  };
</script>

我已经在html文件头中添加了dropzone.js文件。但是，当我将一个文件拖入框中时，我得到了以下错误：

Uncaught ReferenceError: Dropzone is not defined

请帮个忙。

Answer 1

例如，您可以使用非常简单的代码

myDropzone.on("addedfile", function(file) {
  file.previewElement.addEventListener("click", function() { myDropzone.removeFile(file); });
});