Selenium Webdriver Tutorial Javascript
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Selenium WebDriver tutorial Step by Step. Selenium(Java) Advance. Reading External Data. Read Write Excel using Apache POI. Once we switch the control from browser to the alert window. We can use the Alert Interface methods to do required actions such as accepting the alert, dismissing the alert, get the text from the alert window, writing some text on the alert window etc.
What is JavaScriptExecutor?
JavaScriptExecutor is an Interface that helps to execute JavaScript through Selenium Webdriver. JavaScriptExecutor provides two methods 'executescript' & 'executeAsyncScript' to run javascript on the selected window or current page.
In this tutorial, you will learn -
Why do we need JavaScriptExecutor?
In Selenium Webdriver, locators like XPath, CSS, etc. are used to identify and perform operations on a web page.
In case, these locators do not work you can use JavaScriptExecutor. You can use JavaScriptExecutor to perform an desired operation on a web element.
Selenium supports javaScriptExecutor. There is no need for an extra plugin or add-on. You just need to import (org.openqa.selenium.JavascriptExecutor) in the script as to use JavaScriptExecutor.
JavaScriptExecutor Methods
- executeAsyncScript
With Asynchronous script, your page renders more quickly. Instead of forcing users to wait for a script to download before the page renders. This function will execute an asynchronous piece of JavaScript in the context of the currently selected frame or window in Selenium. The JS so executed is single-threaded with a various callback function which runs synchronously.
- executeScript
This method executes JavaScript in the context of the currently selected frame or window in Selenium. The script used in this method runs in the body of an anonymous function (a function without a name). We can also pass complicated arguments to it.
The script can return values. Data types returned are
- Boolean
- Long
- String
- List
- WebElement.
The basic syntax for JavascriptExecutor is given below:
Syntax:
- Script – This is the JavaScript that needs to execute.
- Arguments – It is the arguments to the script. It's optional.
Example of executeAsyncScript
Using the executeAsyncScript, helps to improve the performance of your test. It allows writing test more like a normal coding.
The execSync blocks further actions being performed by the Selenium browser but execAsync does not block action. It will send a callback to the server-side Testing suite once the script is done. It means everything inside the script will be executed by the browser and not the server.
Example 1: Performing a sleep in the browser under test.
In this scenario, we will use 'Guru99' demo site to illustrate executeAsyncScript. In this example, you will
- Launch the browser.
- Open site 'http://demo.guru99.com/V4/ '.
- Application waits for 5 sec to perform a further action.
Step 1) Capture the start time before waiting for 5 seconds ( 5000 milliseconds) by using executeAsyncScript() method.
Step 2) Then, use executeAsyncScript() to wait 5 seconds.
Step 3) Then, get the current time.
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Step 4) Subtract (current time – start time) = passed time.
Step 5) Verify the output it should display more than 5000 milliseconds
Output: Successfully displayed the passed time more than 5 seconds(5000 miliseconds) as shown below:
Example of executeScript
For executeScript, we will see three different example one by one.
1) Example: Click a button to login and generate Alert window using JavaScriptExecutor.
In this scenario, we will use 'Guru99' demo site to illustrate JavaScriptExecutor. In this example,
- Launch the web browser
- open the site 'http://demo.guru99.com/V4/ 'and
- login with credentials
- Display alert window on successful login.
Output: When the code is executed successfully. You will observe
- Successful click on login button and the
- Alert window will be displayed (see image below).
2) Example: Capture Scrape Data and Navigate to different pages using JavaScriptExecutor.
Novatel wireless mc760 driver. Execute the below selenium script. In this example,
- Launch the site
- Fetch the details of the site like URL of the site, title name and domain name of the site.
- Then navigate to a different page.
Output: When above code is executed successfully, it will it will fetch the details of the site and navigate to different page as shown below.
3) Example: Scroll Downusing JavaScriptExecutor.
Execute the below selenium script. In this example,
- Launch the site
- Scroll down by 600 pixel
Output: When above code is executed, it will scroll down by 600 pixels (see image below).
Summary:
JavaScriptExecutor is used when Selenium Webdriver fails to click on any element due to some issue.
- JavaScriptExecutor provides two methods 'executescript' & 'executeAsyncScript' to handle.
- Executed the JavaScript using Selenium Webdriver.
- Illustrated how to click on an element through JavaScriptExecutor, if selenium fails to click on element due to some issue.
- Generated the 'Alert' window using JavaScriptExecutor.
- Navigated to the different page using JavaScriptExecutor.
- Scrolled down the window using JavaScriptExecutor.
- Fetched URL, title, and domain name using JavaScriptExecutor.
Training Summary
Selenium is a popular open-source web-based automation tool. This online course is a step by step guide to learn Selenium Concepts. It is recommended you refer the tutorials sequentially, one after the other.What should I know?
This free tutorial is designed for beginners with little or no automation experience. If you are new to testing first take the basic Software Testing class.
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Syllabus
First Look| Tutorial | What is Selenium? Introduction to Selenium Automation Testing |
| Tutorial | What is Selenium WebDriver? Difference with RC |
It will be beneficial if you revisit Java, before reading tutorials on Webdriver
| Tutorial | How to Download & Install Selenium WebDriver |
| Tutorial | First Selenium Webdriver Script: JAVA Code Example |
| Tutorial | Locators in Selenium IDE: CSS Selector, DOM, XPath, Link Text, ID |
| Tutorial | Find Element and FindElements in Selenium WebDriver |
| Tutorial | Selenium Form WebElement: TextBox, Submit Button, sendkeys(), click() |
| Tutorial | How to Select CheckBox and Radio Button in Selenium WebDriver |
| Tutorial | How to Click on Image in Selenium Webdriver |
| Tutorial | How to Select Value from DropDown using Selenium Webdriver |
| Tutorial | Locate Elements by Link Text & Partial Link Text in Selenium Webdriver |
| Tutorial | Mouse Click & Keyboard Event: Action Class in Selenium Webdriver |
| Tutorial | How to Upload & Download a File using Selenium Webdriver |
| Tutorial | XPath in Selenium WebDriver: Complete Tutorial |
| Tutorial | Alert & Popup Window Handling in Selenium WebDriver |
| Tutorial | How to Handle Web Table in Selenium WebDriver |
| Tutorial | Handling Dynamic Web Tables Using Selenium WebDriver |
| Tutorial | Desired Capabilities in Selenium WebDriver |
| Tutorial | How to Verify Tooltip using Selenium WebDriver |
| Tutorial | How to Find All/Broken links using Selenium Webdriver |
| Tutorial | Gecko (Marionette) Driver Selenium: Download, Install, Use with Firefox |
| Tutorial | How to Download & Install TestNG in Eclipse for Selenium WebDriver |
| Tutorial | TestNG Tutorial: Annotations, Framework, Examples in Selenium |
| Tutorial | TestNG Groups: Include, Exclude with Example - Selenium Tutorial |
| Tutorial | TestNG @Test Priority in Selenium |
| Tutorial | Parallel Execution in Selenium: Session Handling & TestNG Dependency |
| Tutorial | TestNG: How to Run Multiple Test Suites in Selenium |
| Tutorial | TestNG Listeners in Selenium: ITestListener & ITestResult Example |
| Tutorial | How to Execute Failed Test Cases in TestNG: Selenium WebDriver |
| Tutorial | TestNG Report Generation in Selenium WebDriver |
| Tutorial | Customize, PDF & Email TestNG Reports in Selenium WebDriver |
Selenium Webdriver Example
Frameworks| Tutorial | Page Object Model (POM) & Page Factory: Selenium WebDriver Tutorial |
| Tutorial | Dataprovider & TestNG XML: Parameterization in Selenium(Example) |
| Tutorial | Read & Write Data from Excel File in Selenium Webdriver: POI & JXL |
| Tutorial | How to Select Date from DatePicker/Calendar in Selenium Webdriver |
| Tutorial | Selenium Grid Tutorial: Hub & Node (with Example) |
| Tutorial | Maven & Jenkins Integration with Selenium: Complete Tutorial |
| Tutorial | Selenium Automation Framework: Data Driven, Keyword Driven & Hybrid |
| Tutorial | Database Testing using Selenium: Step by Step Guide |
| Tutorial | Handling iFrames in Selenium Webdriver: switchTo() |
| Tutorial | Cross Browser Testing using Selenium WebDriver |
| Tutorial | How to Take Screenshot in Selenium WebDriver |
| Tutorial | Log4j with Selenium Tutorial: Download, Install, Use & Example |
| Tutorial | Selenium Headless Browser Testing: HTMLUnitDriver & PhantomJS |
| Tutorial | Robot Class in Selenium Webdriver |
| Tutorial | How to use AutoIT with Selenium Webdriver: File Upload Example |
| Tutorial | How to Handle SSL Certificate in Selenium WebDriver |
| Tutorial | How to Handle AJAX Call in Selenium Webdriver |
| Tutorial | JavaScriptExecutor in Selenium WebDriver with Example |
| Tutorial | Selenium Webdriver using Python: Tutorial with Example |
| Tutorial | How to use IntelliJ IDEA & Selenium Webdriver |
| Tutorial | Flash Testing with Selenium WebDriver |
| Tutorial | Apache ANT with Selenium: Complete Tutorial |
| Tutorial | How to Generate XSLT Report in Selenium Webdriver |
| Tutorial | Github Integration with Selenium: Complete Tutorial |
| Tutorial | Cookies Handling in Selenium WebDriver |
| Tutorial | Using SoapUI with Selenium for Web Service Testing |
| Tutorial | How to Create Firefox Profile in Selenium WebDriver |
| Tutorial | Selenium with Cucumber (BDD Framework): Tutorial with Example |
| Tutorial | How to Drag and Drop in Selenium WebDriver (EXAMPLE) |
| Tutorial | Selenium C# Webdriver Tutorial: NUnit Example |
| Tutorial | Creating Object Repository in Selenium WebDriver: XML & Properties file |
| Tutorial | How to Scroll Down or UP a Page in Selenium Webdriver |
| Tutorial | Sikuli Tutorial: How to use Sikuli with Selenium (EXAMPLE) |
| Tutorial | XPath Contains, Sibling, Ancestor Functions in Selenium WebDriver |
| Tutorial | Implicit, Explicit, & Fluent Wait in Selenium WebDriver |
| Tutorial | Double click and Right Click in Selenium with Examples |
| Tutorial | Selenium Proxy Authentication using Webdriver with EXAMPLE |
Selenium With Javascript
| Tutorial | How to Download & Install Selenium IDE for Firefox |
| Tutorial | Selenium IDE Tutorial for Beginners |
| Tutorial | How to use Selenium IDE with Scripts & Commands (Assert, Verify) |
| Tutorial | Verify Element Present, waitFor, andWait in Selenium IDE |
| Tutorial | Store Variables, Echo, Alert, PopUp handling in Selenium IDE |
| Tutorial | Selenium Core Extensions (User-Extensions.js) |
| Tutorial | Breakpoint & Start Point in Selenium IDE |
| Tutorial | Maximize Browser in Selenium |
| Tutorial | Chrome Options & Desiredcapabilities: AdBlocker, Incognito, Headless |
| Tutorial | Refresh Page using Selenium Webdriver |
| Tutorial | Top 100 Selenium Interview Questions & Answers |
| Tutorial | Selenium vs HP UFT (QTP): What's the Difference? |
| Tutorial | Top 15 Selenium Alternatives |
| Tutorial | Selenium Tutorial PDF |
Selenium Webdriver Tutorial Javascript Download
Live Selenium ProjectSelenium Webdriver Js
| Join | Live Selenium Project: Banking Domain |
| Join | Live Ecommerce Project: Selenium Automation |