method

select

v2.2.1 - Show latest stable - 0 notes - Class: HTML::Selector

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What's this?

select(root) public

Selects and returns an array with all matching elements, beginning with one node and traversing through all children depth-first. Returns an empty array if no match is found.

The root node may be any element in the document, or the document itself.

For example:

  selector = HTML::Selector.new "input[type=text]"
  matches = selector.select(element)
  matches.each do |match|
    puts "Found text field with name #{match.attributes['name']}"
  end

Show source

# File actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb, line 453
    def select(root)
      matches = []
      stack = [root]
      while node = stack.pop
        if node.tag? && subset = match(node, false)
          subset.each do |match|
            matches << match unless matches.any? { |item| item.equal?(match) }
          end
        elsif children = node.children
          stack.concat children.reverse
        end
      end
      matches
    end

select

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