Selenium Notes

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HTML DOM Structure:
================================

What is HTML DOM?

- Document Object Model of the page.
- constructed as a tree of Objects:
- it defines:

    - HTML elements as objects
    - Properties for all HTML elements
    - Methods for all HTML elements
    - Events for all HTML elements



Finding HTML Elements

When you want to access HTML elements, you have to find the elements first.

There are a couple of ways to do this:

  • Finding HTML elements by id
  • Finding HTML elements by tag name
  • Finding HTML elements by class name
  • Finding HTML elements by CSS selectors
  • Finding HTML elements by HTML object collections


HTML id Attributes:

  • specifies a unique id for a HTML element
  • Rules for id attribute:
    • at least one character
    • no space characters
    • always case sensitive
    • unique in the document

HTML name attribute:

  • specifies a name for an HTML element
  • does not have to be unique in an HTML document
  • mostly used in forms to reference the element when the data is submitted
HTML XPath:

  • stands for XML path language
  • uses path expression to identify and navigate nodes in an XML document
  • can be used to select one/more nodes in the document - by using absolute / relative path
HTML class Attribute:

  • specifies one/more class names for an HTML element
  • used to point to a class in a stylesheet
  • used to locate elements when the class attribute of one/more element is known

Locating Elements: Summarized

  • find_element_by_id
  • find_element_by_name
  • find_element_by_xpath
  • find_element_by_link_text
  • find_element_by_partial_link_text
  • find_element_by_tag_name
  • find_element_by_class_name
  • find_element_by_css_selector
To find multiple elements (these methods will return a list):
  • find_elements_by_name
  • find_elements_by_xpath
  • find_elements_by_link_text
  • find_elements_by_partial_link_text
  • find_elements_by_tag_name
  • find_elements_by_class_name
  • find_elements_by_css_selector

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