Introduction to Selenium

-It is an open source tool
-It is also a free tool
-It is used for Functionality testing and Regression testing
-it supports only web application to Automate (Browser Automation tool)
-it supports multiple scripting languages like Java/C#/Ruby/Python/Perl...etc
-It supports multiple browsers like IE, FF, Chrome, Opera...etc
-It supports multiple OS like Windows, Linux, Mac...etc
-Selenium is a suite of tools
Selenium 1.0:
It was firstly introduced in 2004
Components in Selenium 1.0
1. Selenium IDE
2. Selenium RC (Deprecated)
3. Selenium Grid/Grid-1 (Deprecated)
Selenium 2.0 & 3.0:
It was introduced in 2010
Components in Selenium 2.0 & 3.0
1. Selenium WebDriver/WebDriver
2. Remote WebDriver/Grid-2

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Selenium IDE
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IDE--> Integrated Development Environment
It is an Add-on for Firefox browser
It is a Record and Playback tool
Recording:
Converting our actions/operations which we perform on AUT into automation script is called REcording
Playback:
While script execution tool will interact with application and perform operations is called Playback

Installation of Selenium IDE:
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Prerequisites:
Firefox browser (43.0.1 Version)
open "www.seleniumhq.org"
click on "download previous versions" under "Selenium IDE" section
click on "Add to Firefox"
click on "Install"