Test 02
The human sees the content. The original HTML does not contain it.
View this normally, then open View Page Source and search for the price or start date you can see on the rendered page. Those values are not in this HTML file. JavaScript fetches the data and inserts it after load.
Loading from JavaScript…
Loading product name…
Loading description from an external JSON file…
Loading price…
Instructor demo
View Page Source: the actual masterclass name, price and start date are absent.
Inspect → Elements: after JavaScript runs, those values appear in the live DOM.
Disable JavaScript and reload: the product information never arrives.