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WebDriverIO – getWindowSize Command
getWindowSize Command is used to get the browser Window Size . In simple terms, it returns the window size of your system/laptop etc on which you are running your working code.
Pre-requisite: Have ‘Visual Studio Code’ IDE installed in your machine (Click here to install if not installed in your machine)
Here is the small Exercise to find out the size of the browser Window on which you are running your working code, using getWindowSize() command of WebDriverIO.
Using getWindowSize() Command
First, I will demonstrate the exercise where we will open URL in browser window and will try to get its window size and print it on console using getWindowSize() command, followed by practically demonstrating the WebDriverIO Automation code for achieving it.
Exercise:-
1) Navigate to http://omayo.blogspot.com/ 
2) Finding size of browser Window being present on omayo.blogspot.com web application.
Practical Demonstration:
Following are the Steps to Perform above Exercise (i.e. to find out the size of the browser Window on which you are running your working code) using WebDriverIO Automation code in ‘Visual Studio Code’ IDE:
Pre-requisite: Download the Project from here (Click here to Download) and Unzip it.
1) Open Visual Studio Code on your system.
2) Click on File and Select Open Folder. Select the project folder on which your workspace is present.
3) Expand ‘test’ from the Explorer, right click on the displayed ‘specs’ and select ‘New File’ option as shown below:
4) Give any name of the newly created file say “getWindowSize _Command_test.js” and copy the below given code into the newly created file as shown below and save the file:
The following is the WebDriverIO sample code to find out the size of the browser Window on which you are running your working code and print it on console by using getWindowSize() command of WebDriverIO on ‘Omayo.blogspot.com’ application.
You can understand this code, by reading the comments provided in the below code:
Copy the code from here:-
describe('This Example show usage of getWindowSize command in webdriverio', () => {
it('should fetch the size of browserWindow in which mentioned url has been opened', ()=> {
browser.url('http://omayo.blogspot.com');
console.log(browser.getWindowSize());
});
});
5) Click on ‘wdio.conf.js’ to open in the IDE, and make sure the Test file name is updated properly and browser name should be changed from firefox to chrome in this file as shown below and save it:
6) Click on Terminal and Open New Terminal. 
7) By Default, Powershell Terminal will open, change it to git bash as shown below:
8) Open Another Terminal in the same way we did in the step 6 and run below command in terminal
.\node_modules\.bin\wdio .\wdio.conf.js
Observe that the ‘getWindowSize_Command_test.js’ will get executed successfully, the chrome Browser will launch, and open url given in code and respective action will be taken by WebDriverIO Automation code.
And also, the result will be displayed as ‘Passed’ in the terminal as shown below:
This is how, we can take help of getWinowSize() Command of WebDriverIO to find out the browser window size. I will explain other commands to perform different operations on Web Pages using WebDriverIO in the upcoming Articles.
Next Steps:
> To learn more about WebDriverIO, continue to the next post (Click on Next Post link below)
> Check complete WebDriverIO Tutorial Contents here (Click here)
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