我需要抓取一个目录，目录是多级展开的，参见：https://www.amazon.com/gp/bestsellers
左侧的每条根目录，点击以后会出现下层目录树。
我想用递归的方法实现：
在使用UiElement.DataScrap命令的时候，我发现规律是:
在selecors的部分，每下降一层，就会重复写一遍，简单的说就是
arrayData=........"selecors":[A, {"tag".........
arrayData2=........"selecors":[A,A, {"tag".........
arrayData3=........"selecors":[A,A,A, {"tag".........
注意标记A的地方，这里的A代表一串字符，具体说就是 {"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":">"}
那么，问题1是：
我这种后续增多的情况，我要怎么写递归？
以下为原码的数据抓取部分，每次抓取的目录，遍历一下，有下层的，下层遍历
问题2，有人介绍我使用子元素和父元素。我不是特别理解。
每一个层次的元素都不一样，我要如何在打开的那一层目录上取得他是子元素还是父元素？
如果我找到父元素目标，这个元素要怎么使用？网上UIBOT的内容没有说这一点。而且我也没有相关其它的编程基础，直接就用的UIBOT。
问题3，关于https://www.amazon.com/gp/bestsellers，这种目录树，我想要它整个树结构，以及对应的网址，有没有更好的抓取方法？
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arrayData = UiElement.DataScrap({"wnd":[{"cls":"Chrome_WidgetWin_1","title":"*","app":"chrome"},{"cls":"Chrome_RenderWidgetHostHWND","title":"Chrome Legacy Window"}],"html":[{"tag":"DIV","id":"*"}]},{"ExtractTable":0,"Columns":[{"selecors":[{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":""}, {"tag":"div","value":"div","index":0,"prefix":">"},{"tag":"a","index":0,"className":"","value":"a","prefix":">"}],"props":["text","url"]}]},{"objNextLinkElement":"","iMaxNumberOfPage":5,"iMaxNumberOfResult":-1,"iDelayBetweenMS":1000,"bContinueOnError":False})
arrayData2 = UiElement.DataScrap({"wnd":[{"cls":"Chrome_WidgetWin_1","title":"*","app":"chrome"},{"cls":"Chrome_RenderWidgetHostHWND","title":"Chrome Legacy Window"}],"html":[{"tag":"DIV","id":"*"}]},{"ExtractTable":0,"Columns":[{"selecors":[{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":""},{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":">"}, {"tag":"div","value":"div","index":0,"prefix":">"},{"tag":"a","index":0,"className":"","value":"a","prefix":">"}],"props":["text","url"]}]},{"objNextLinkElement":"","iMaxNumberOfPage":5,"iMaxNumberOfResult":-1,"iDelayBetweenMS":1000,"bContinueOnError":False})
arrayData3 = UiElement.DataScrap({"wnd":[{"cls":"Chrome_WidgetWin_1","title":"*","app":"chrome"},{"cls":"Chrome_RenderWidgetHostHWND","title":"Chrome Legacy Window"}],"html":[{"tag":"DIV","id":"*"}]},{"ExtractTable":0,"Columns":[{"selecors":[{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":""},{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":">"},{"tag":"div","index":0,"className":"_p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","value":"div._p13n-zg-nav-tree-all_style_zg-browse-group__88fbz","prefix":">"},{"tag":"div","value":"div","index":0,"prefix":">"},{"tag":"a","index":0,"className":"","value":"a","prefix":">"}],"props":["text","url"]}]},{"objNextLinkElement":"","iMaxNumberOfPage":5,"iMaxNumberOfResult":-1,"iDelayBetweenMS":1000,"bContinueOnError":False})
