bideowego / project_dom_tree

Like leaves on the wind

project_dom_tree

Like leaves on the wind

Bideo Wego

Usage

1. Make your way to IRB within the project root directory

   $ cd to/this/directory
   $ irb
   

2. Read the HTML file

   html = File.read('test.html')

3. Pass the returned string to the DOMReader

   • NOTE: this will automatically build the tree from the string

   d = DOMReader.new(html)

4. Want a quick way to verify the rendered output is the same as the HTML string?

   html.gsub(/\s/, '') == d.render.gsub(/\s/, '')

5. Render the tree to a string

   puts d.render

6. Search for nodes by :element, :text, or an attribute

   d.search_by(:element, 'html')
   d.search_by(:text, 'One h1')
   d.search_by(:id, 'main-area')
   d.search_by(:class, 'top-div')

7. Search all the descendents of a node with #search_children

   d.search_children(d.root, :element, 'li')

8. Search only direct children of a node with #search_ancestors

   d.search_ancestors(d.root, :element, 'head')

A data structures, algorithms, file I/O, ruby and regular expression (regex) project from the Viking Code School