如何在InternJs中重试任务，直到满足条件

Question

我正在编写一个函数，试图在发生错误时单击重试元素（staleElement，不可见元素等）。显然我不希望它无限循环，以防该元素无法点击一个bug，所以我想插入一个计数器，但我遇到了一个问题：

我的测试代码是

var attempt = 0;

var tryClick = function(id, node)//clicks on the element defined by the given data-dojo-id and node(optional)
  {
    return function()
    {
      return this.parent
        .setFindTimeout(30000)
        .setPageLoadTimeout(30000)
        .setExecuteAsyncTimeout(30000)
        .sleep(1000)
        .then(nodeByDId(id, node)) //this just sets the node as context
        .click()
        .end();
    };
  };

var clickByDId = function(id, node)//clicks on the element defined by the given data-dojo-id and node(optional)
  {
    return function()
    {
      var remote = this.parent;
      console.log('clicking ' + id);
        return this.parent
          .then(tryClick(id, node))
          .catch(function()
            {
                if (attempt <= 5)
                {
                  attempt++;
                  console.log('Attempt to click '+ id + ': ' + attempt);
                  return remote
                    .sleep(1000)
                    .then(clickByDId(id, node));
                }
                else
                {
                  attempt = 0;
                  throw 'cannot click element';
                }
            })
          .sleep(1000);
    };
  };

我期待我的测试增加每次捕获的尝试，但是当我运行测试时，例如

  'click':function()
  {
    return this.remote
      .setFindTimeout(30000)
      .setPageLoadTimeout(30000)
      .setExecuteAsyncTimeout(30000)
      .then(clickByDId(notVisibleWidgetId));
  }

我从日志中得到的是

clicking notVisibleWidgetId
Attempt to click notVisibleWidgetId: 1
clicking notVisibleWidgetId
Attempt to click notVisibleWidgetId: 1
clicking notVisibleWidgetId
Attempt to click notVisibleWidgetId: 1
clicking notVisibleWidgetId
Attempt to click notVisibleWidgetId: 1
clicking notVisibleWidgetId
Attempt to click notVisibleWidgetId: 1

等。 谁能向我解释那些结果？ catch部分不应该增加变量吗？有人知道如何实现类似的东西吗？