Javascript handling scrolling and repositioning

When using the scrollBy() method in the window object of JavaScript, there are two arguments required. But what do these arguments actually represent? The resource I am currently studying from states that it is "the number of pixels to scroll by," but I am unclear on how this works. Does it mean that if I drag the scroll bar on the right side, it will move the content by the specified amount of pixels, or does it refer to clicking the up or down scroll button to move the content?

Furthermore, I am having difficulty distinguishing between the moveTo() method and the moveBy() method. At first glance, they appear to perform the same task. In light of this, why would there be a need for two functions that essentially do the same thing?

javascript scroll

Answer №1

When it comes to the parameters, they refer to the top and left coordinates in pixels.

It's important to note that both the scrollTo and scrollBy methods function similarly with one key difference - scrollTo utilizes absolute coordinates while scrollBy uses relative coordinates based on the current scroll position.

This same principle also applies to the moveTo and moveBy methods as well.

Answer №2

The presence of numerous repetitive characteristics in JavaScript can be attributed to the fact that each browser has its own unique way of interpreting them. The MoveTo function directs an element to a specified distance from the top, whereas moveBy shifts the view by a designated distance from its current location.

An excellent resource for analyzing JavaScript properties is the Firebug browser extension. I highly recommend checking it out.

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