Javascript and Selenium (Selenium titbits series)

In this post we will be talking about Javascript DOM and BOM and its usage behind the scenes in Selenium.

Javascript

• JavaScriptis a high-level, dynamic, untyped, and interpreted programming language
• Javascript is one of the three essential technologies of World Wide Web content production and majority of site has Javascript running in it.
• Javascript runs without any plugins

Javascript and selenium

• As we all know Selenium WebDriver behind the scenes converts the client code (language bindings) to its equivalent Javascript and injects in browsers like IE, Chrome, Firefox etc, JS is thus a key player in Selenium.
• We can perform whatever operation selenium performs using Javascript itself.
• To prove the concept, we need to understanding following Javascript libraries
  • Javascript HTML Document Object Model
  • Javascript Browser Object Model

E.G of Javascript Document Object Model

• To get title of the document
  • Document.title
• To get ready state of page (fully loaded)
  • Document.readyState
• Finding an element with Id
  • Document.getElementById()

E.G of Javascript Browser Object Model

• Opening a new window
  • window.Open
• To go back of page
  • window.history.back()
• To get the origin of the page
  • window.location

Here is the complete video of the above discussion Thanks for reading the post and watching the video!!! Please leave your comments and let me know if there is anything I should update in this post. Thanks, Karthik KK