如何在Dropzone中更改添加预览的元素

// 创建Dropzone实例
var myDropzone = new Dropzone("#my-dropzone", { 
  // 其他配置项...
  previewTemplate: '<div class="dz-preview dz-file-preview">' +
                      '<div class="dz-details">' +
                          '<div class="dz-filename"><span data-dz-name></span></div>' +
                          '<div class="dz-size" data-dz-size></div>' +
                          '<img data-dz-thumbnail />' +
                      '</div>' +
                      '<div class="dz-progress"><span class="dz-upload" data-dz-uploadprogress></span></div>' +
                      '<div class="dz-success-mark"><span>✔</span></div>' +
                      '<div class="dz-error-mark"><span>✘</span></div>' +
                      '<div class="dz-error-message"><span data-dz-errormessage></span></div>' +
                  '</div>'
});