Question

给出以下WATIR对象：

In [1]: s = 'XR0R1R2R3'

In [2]: before = ['R0','R1','R2','R3']

In [3]: after = ['_0','_1','_2','_3']

In [4]: for a, b in zip(before, after):
   ...:     s = s.replace(a, b)
   ...:     

In [5]: s
Out[5]: 'X_0_1_2_3'

my_links["Reports"] => #<Watir::Anchor: located: true; {:tag_name=>"a", :index=>8}>易于检索：

tag_name

但是如何检索索引号？我可以看到它是整数my_links["Reports"].tag_name 2018-10-12 12:29:00 INFO Watir <- `Verifying precondition #<Watir::Anchor: located: true; {:tag_name=>"a", :index=>8}># for tag_name` 2018-10-12 12:29:00 INFO Watir <- `Verified precondition #<Watir::Anchor: located: true; {:tag_name=>"a", :index=>8}>#assert_exists` 2018-10-12 12:29:00 INFO Watir -> `Executing #<Watir::Anchor: located: true; {:tag_name=>"a", :index=>8}>#tag_name` 2018-10-12 12:29:00 INFO Watir <- `Completed #<Watir::Anchor: located: true; {:tag_name=>"a", :index=>8}>#tag_name` => "a"，但是我找不到返回它的方法。

Answer 1

哈希值{:tag_name=>"a", :index=>8}来自元素的选择器。有一个属性读取器可以访问它：

my_links["Reports"].selector
#=> {:tag_name=>"a", :index=>8}

您可以从此哈希访问索引：

my_links["Reports"].selector[:index]
#=> 8

请注意，通过集合检索的元素将始终具有索引。可能无法检索单个元素，这意味着索引将为nil：

browser.link.selector
#=> {:tag_name=>"a"}

browser.link.selector[:index]
#=> nil

但是，如果未指定索引，则可以假定它为零。为避免使用nil，请提供默认值：

browser.link.selector.fetch(:index, 0)
#=> 0

Ruby Watir，HTMLElement对象索引

1 个答案: