feat: explain dollar sign variable names

honzajavorek · honzajavorek · commit dbb4fbb9e6fd · 2025-07-01T09:50:31.000+02:00
diff --git a/sources/academy/webscraping/scraping_basics_javascript2/06_locating_elements.md b/sources/academy/webscraping/scraping_basics_javascript2/06_locating_elements.md
@@ -108,6 +108,12 @@ Sony XBR-950G BRAVIA 4K HDR Ultra HD TV |
 
 There's still some room for improvement, but it's already much better!
 
+:::info Dollar sign variable names
+
+In jQuery and Cheerio, the core idea is a collection that wraps selected objects, usually HTML elements. To tell these wrapped selections apart from plain arrays, strings or other objects, it's common to start variable names with a dollar sign. This is just a naming convention to improve readability. The dollar sign has no special meaning and works like any other character in a variable name.
+
+:::
+
 ## Precisely locating price
 
 In the output we can see that the price isn't located precisely. For each product, our scraper also prints the text `Sale price`. Let's look at the HTML structure again. Each bit containing the price looks like this:
