停止生成预览?

removeFile accept 处理程序。

所以,我的 处理程序如下所示:

accept: function(file) {
  if (/* condition not met */) {
    alert("You haven't met the condition. No upload for you!");
    deleteOnServer = false;
    this.removeFile(file);
    deleteOnServer = true;
    return false;
  }

  /* otherwise, do normal "accept" processing. */

在我的Dropzone中注册“removedFile”事件处理程序 init

init:  function() {
  this.on("removedFile", function(file) {
    if (!deleteOnServer) {
        return false;
    }

    /* otherwise, send $.ajax(DELETE) request to server */
       :
  }