What is Selenium

Selenium is a free open source automated testing suite.it supports only web based application. selenium is not just a single tool but a suite of software It has four component.

1.Selenium IDE (Integrated Development environment )

2.Selenium RC (Remote Control)

3.WebDriver

4. Selenium Grid

In market lots of automation tools like selenium , QTP (quick test process) and  Katalon studio but mostly companies used selenium because it is an open source and it support multiple languages like java ,C#,python ,Ruby etc. It is useful to test website on different- different browser.

What is selenium IDE ? 

Selenium IDE (integrated development environment) is a record and playback tool.Its record and action performed on web page. It is an extension of chrome and Firefox browser.



What is selenium RC(Remote control)? 
This is the first automated web application tool that allow user to use a programming language.Its support multiple programming language like java , php , C# ,python ,perl ,ruby etc.


What is selenium Web driver ? 

web driver is an web  automated  testing tool that is directly communicate to the web Browser. with help of web driver  you can our run the script on different-different browser.
 >> If you want to  run our  script on chrome browser than you need chrome web driver.
>> If you want to run our script on Firefox  browser  then you need gecko web driver.
>> same If want to run our script on IE Browser then  you need Internet Explorer Driver.


What is selenium grid? 

Selenium grid is used to run test cases parallel  on different -2 machine and different -2 browser at same time. parallel test case means executing multiple test cases at same time.

How to Open Browser in Selenium

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;

public class login {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.setProperty("webdriver.chrome.driver","C:\\Users\\dell\\Downloads\\chromedriver_win32\\chromedriver.exe");                               
WebDriver driver = new ChromeDriver();
driver.get("https://www.facebook.com/");



}

}

For More Detail Please see video "https://youtu.be/ayelY9W0TRI"

What is locator in selenium and types of locator.

Locator is use to finding the web element on web page.There are 8 types of locator in selenium.
1. Id
2.Name
3.Link Text
4.Partial Link Text
5.DOM(Document Object Model)
6Css selector
7.Xpath
8.Class
For more detail please see  video" https://youtu.be/zlz24-9UBqg"