处理针对AJAX调用的超出范围的变量

I have the following code:

我有以下代码:

var User = {
  get: function (options) {
    var self = this;

    $.ajax({
      url: options.url,
      success: function (data, response) {
        self.nextPageUrl = data.pagination.next_page;
        options.success(data, response);
      }
    });
  },
  nextPage: function (success) {
    this.get({
      url: this.nextPageUrl, 
      success: success
    });
  }
}

User.get({
  url: 'https://cache.getchute.com/v2/albums/aus6kwrg/assets',
  success: function (data, response) {
    // Through `data.pagination.next_page` I can get the URL
    // of the next page.
  }
});

User.nextPage({
  success: function (data, response) {
    // Here I want to make the same request but using the next_page
    // based on the next related to the previous' one.
  }
});
var User