阻止返回到客户端的ajaxSubmitHandler

$.ajax({
  url: "your-url",
  type: "POST",
  data: yourData,
  success: function(response, status, xhr) {
    // 处理成功回调
  },
  error: function(xhr, status, error) {
    // 处理错误回调
  },
  complete: function(xhr, status) {
    // 阻止返回到客户端的ajax请求
    xhr.abort();
  }
});

$.ajax({
  url: "your-url",
  type: "POST",
  data: yourData,
  success: function(response, status, xhr) {
    // 处理成功回调
  },
  error: function(xhr, status, error) {
    // 处理错误回调
  },
  complete: function(xhr, status) {
    // 阻止返回到客户端的ajax请求
    return false;
  }
});