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feat: update the DevTools 2 lesson of the JS2 course to be about JavaScript #1655

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Jul 28, 2025
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feat: update the DevTools 2 lesson of the JS2 course to be about JavaScript #1655

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8 changes: 3 additions & 5 deletions ...cademy/webscraping/scraping_basics_javascript2/02_devtools_locating_elements.md
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Expand Up @@ -56,9 +56,7 @@ The `class` attribute can hold multiple values separated by whitespace. This par

## Programmatically locating a product card

Let's jump into the **Console** and write some JavaScript. Don't worry—we don't need to know the language, and yes, this is a helpful step on our journey to creating a scraper in Python.

In browsers, JavaScript represents the current page as the [`Document`](https://developer.mozilla.org/en-US/docs/Web/API/Document) object, accessible via `document`. This object offers many useful methods, including [`querySelector()`](https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector). This method takes a CSS selector as a string and returns the first HTML element that matches. We'll try typing this into the **Console**:
Let's jump into the **Console** and write some code. In browsers, JavaScript represents the current page as the [`Document`](https://developer.mozilla.org/en-US/docs/Web/API/Document) object, accessible via `document`. This object offers many useful methods, including [`querySelector()`](https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelector). This method takes a CSS selector as a string and returns the first HTML element that matches. We'll try typing this into the **Console**:

```js
document.querySelector('.product-item');
Expand Down Expand Up @@ -136,14 +134,14 @@ We'll expand the result by clicking the small arrow, then hover our cursor over

![Highlighting a querySelectorAll() result](./images/devtools-hover-queryselectorall.png)

To save the subwoofer in a variable for further inspection, we can use index access with brackets, just like in Python lists (or JavaScript arrays):
To save the subwoofer in a variable for further inspection, we can use index access with brackets, just like with regular JavaScript arrays:

```js
products = document.querySelectorAll('.product-item');
subwoofer = products[2];
```

Even though we're just playing with JavaScript in the browser's **Console**, we're inching closer to figuring out what our Python program will need to do. In the next lesson, we'll dive into accessing child elements and extracting product details.
Even though we're just playing in the browser's **Console**, we're inching closer to figuring out what our Node.js program will need to do. In the next lesson, we'll dive into accessing child elements and extracting product details.

---

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2 changes: 1 addition & 1 deletion ...ces/academy/webscraping/scraping_basics_python/02_devtools_locating_elements.md
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Expand Up @@ -135,7 +135,7 @@ We'll expand the result by clicking the small arrow, then hover our cursor over

![Highlighting a querySelectorAll() result](./images/devtools-hover-queryselectorall.png)

To save the subwoofer in a variable for further inspection, we can use index access with brackets, just like in Python lists (or JavaScript arrays):
To save the subwoofer in a variable for further inspection, we can use index access with brackets, just like with Python lists (or JavaScript arrays):
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In previous lines you've erased Python mention and made JS first and center, any reason why here it is different?

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Good catch, this is a bug!

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@honzajavorek honzajavorek Jul 28, 2025 •
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Ah! It is not 😄 This is a fix of one word in a corresponding Python lesson, so the wording is correct here (but would, of course, be incorrect in the files above). I should probably mark these ad-hoc fixes in the Python course, as they're a bit confusing when reading the diffs. It's not easy to keep the context of "actually, this is in scraping_basics_python folder" and when I saw your comment for the first time, I didn't realize it myself 😅

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Oh yeah you are right :D Didn't even occur to me to double check the file names :D Mea Culpa!

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I mean, it's impossible to spot. I'll add warning signs next time ⚠️ 🐍


```js
products = document.querySelectorAll('.product-item');
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