What causes the unusual behavior of the JavaScript scroll() function moving in the opposite direction?

Referencing this discussion: Vertical Scroll down and scroll up in Selenium WebDriver with java

My understanding is that using scroll(xpos, ypos) requires the following:

  • A positive value for scrolling down
  • A negative value for scrolling up

However, isn't it true that in the Cartesian Plane, downward movement corresponds to a negative value on the y-axis? https://i.sstatic.net/j3jY9.png

If anyone could provide clarification, I would greatly appreciate it. Thank you!

Answer №1

After much research, I believe I have come across a very pertinent article with evidence supporting my theory:

Exploring the Reason for the Top Left Origin in Computer Graphics

It is worth noting that this concept also carries over to how browsers interpret and display information on a screen.

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