Elixir 使用Floki访问html属性_Elixir

Elixir 使用Floki访问html属性

elixir

Elixir 使用Floki访问html属性,elixir,Elixir,我试图从我用过的HTML正文中获取图像。现在尸体在 [ {"div", [{"class", "a-cover-image"}, {"data-state", "not-initialised"}], [ {"div", [ {"class", "content"}, {&q

我试图从我用过的HTML正文中获取图像。现在尸体在

[
  {"div", [{"class", "a-cover-image"}, {"data-state", "not-initialised"}],
   [
     {"div",
      [
        {"class", "content"},
        {"data-image",
         "/sites/default/files/legacy/khloe-kardashian-anxiety-pregnancy.png"},
        {"data-text", "A photo of Khloe Kardashian dressed up for a night out"}
      ],
      [
        {"div",
         [
           {"class", "a-cover-image__cover a-cover-image__cover-loading-inner"},
           {"style",
            "background-image: url('/sites/default/files/legacy/khloe-kardashian-anxiety-pregnancy.png')"}
         ], []}
      ]},
     {"div",
      [
        {"class", "a-cover-image__cover a-cover-image__cover-small"},
        {"data-image",
         "/sites/default/files/styles/1x1/public/legacy/khloe-kardashian-anxiety-pregnancy.png?itok=agZilCJ6"},
        {"data-text", "A photo of Khloe Kardashian dressed up for a night out"},
        {"data-height", ""},
        {"data-width", ""}
      ], []},
     {"div",
      [
        {"class", "a-cover-image__cover a-cover-image__cover-medium"},
        {"data-image",
         "/sites/default/files/styles/3x2/public/legacy/khloe-kardashian-anxiety-pregnancy.png?itok=tnPqQNhC"},
        {"data-text", "A photo of Khloe Kardashian dressed up for a night out"},
        {"data-height", ""},
        {"data-width", ""}
      ], []},
     {"div",
      [
        {"class", "a-cover-image__cover a-cover-image__cover-large"},
        {"data-image",
         "/sites/default/files/styles/16x9/public/legacy/khloe-kardashian-anxiety-pregnancy.png?itok=YgdCfuT2"},
        {"data-text", "A photo of Khloe Kardashian dressed up for a night out"},
        {"data-height", ""},
        {"data-width", ""}
      ], []},
     {"div",
      [
        {"class", "a-cover-image__cover a-cover-image__cover-xl"},
        {"data-image",
         "/sites/default/files/styles/16x9/public/legacy/khloe-kardashian-anxiety-pregnancy.png?itok=YgdCfuT2"},
        {"data-text", "A photo of Khloe Kardashian dressed up for a night out"},
        {"data-height", ""},
        {"data-width", ""}
      ], []}
   ]}
]

所以我试图从

a-cover-image\uuuu-cover-small

中获取

数据图像，我知道我可以像这样从身体中获取元素
body |>Floki.find（“.a-cover-image_uu-cover-small”）
然后输出
[
  {"div",
   [
     {"class", "a-cover-image__cover a-cover-image__cover-small"},
     {"data-image",
      "/sites/default/files/styles/1x1/public/legacy/khloe-kardashian-anxiety-pregnancy.png?itok=agZilCJ6"},
     {"data-text", "A photo of Khloe Kardashian dressed up for a night out"},
     {"data-height", ""},
     {"data-width", ""}
   ], []}
]

我很难理解如何获取数据文本
，如何返回它？谢谢
您可以使用Floki.attribute/2
：
body |> Floki.find(".a-cover-image__cover-small") |> Floki.attribute("data-text")
# => ["A photo of Khloe Kardashian dressed up for a night out"]

如果您知道只有一个匹配元素，则可以使用模式匹配来提取它：
[text] = body |> Floki.find(".a-cover-image__cover-small") |> Floki.attribute("data-text")
text # => "A photo of Khloe Kardashian dressed up for a night out"

您只需使用Floki.attribute/2
：
body |> Floki.find(".a-cover-image__cover-small") |> Floki.attribute("data-text")
# => ["A photo of Khloe Kardashian dressed up for a night out"]

如果您知道只有一个匹配元素，则可以使用模式匹配来提取它：
[text] = body |> Floki.find(".a-cover-image__cover-small") |> Floki.attribute("data-text")
text # => "A photo of Khloe Kardashian dressed up for a night out"

omg，如果我开始解释由于某些原因我不能做到这一点，那将很有趣，但感谢匹配元素示例omg，如果我开始解释由于某些原因我不能做到这一点，那将很有趣，但感谢匹配元素示例