Getting Started with Selenium (JavaScript)

Alex : Hey Mia, I’ve been hearing a lot about Selenium lately. I know it’s used for testing, but I’m not exactly sure how it works. Can you explain?

Mia : Of course, Alex! Selenium is a powerful tool we use to automate browsers. It basically allows you to write scripts that perform user-like actions on a website—like typing into input fields or clicking buttons.

Alex : Oh, like simulating a real user?

Mia :

Good question. A few reasons:

  • It’s open-source and free.
  • It works great with JavaScript via Node.js.
  • It supports all the major browsers—Chrome, Firefox, Edge—you name it.
  • And most importantly, it helps QA teams write automated tests that run faster and more reliably than manual ones.

Alex: That sounds awesome. But how does it help us in QA specifically?

Mia: Good question. We use it to automate repetitive tasks—like login forms, navigation, or filling out forms. It’s also great for regression testing after a new release. Rather than doing everything manually, we let Selenium handle it.

Alex: That must save a lot of time.

Mia: It really does. Plus, it helps catch bugs early by testing key features automatically every time we push a change.

Alex: I’m interested! How do I start using Selenium with JavaScript?

Mia: Let me show you a simple example. Here’s a basic test script using Selenium and JavaScript

 
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Alex: Okay, let me see if I understand. This script:

  • Opens Chrome,
  • Goes to the website,
  • Types in the username and password,
  • Clicks the login button,
  • Waits for the dashboard to load,
  • And then closes the browser.

Mia: Spot on! That’s the flow. You’re already getting the hang of it.

Alex: Awesome! What are the main commands I should memorize?

Mia: Here’s a quick list:

  • driver.get(url) – opens a web page
  • driver.findElement(By.<type>) – finds an element by name, ID, etc.
  • .sendKeys(‘text’) – types into a field
  • .click() – clicks a button or link
  • driver.quit() – closes the browser
  • driver.wait(…) – waits for an element or condition to be met

Alex: This is super clear. Is this how we write most of our test automation scripts?

Mia: Yes, this is the foundation. As you get more comfortable, we can build more advanced flows—like testing dropdowns, alerts, file uploads, or even running tests in parallel.

Alex: I can’t wait to try it out. Thanks, Mia. You made it a lot less intimidating!

Mia: Anytime, Alex. Let’s pair up next week and write your first full test case together.

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