Why does the space bar do page down in browsers

1. Why is my spacebar moving the page down?
2. How do I make the space bar scroll down?
3. How do I turn off the space bar scroll in Firefox?

Why is my spacebar moving the page down?

This default scrolling behavior comes from the keydown event. In order to prevent it, you must handle the keydown event and prevent the default behavior, either by returning false from the event handler or calling event.

How do I make the space bar scroll down?

How to Use Spacebar for Scrolling Webpages. You can simply press spacebar once to scroll down one screen on a web page. It may be the easiest way, but you still need a little practice to use spacebar if you're using this method for the first time.

How do I turn off the space bar scroll in Firefox?

Open up the preferences and a little window will show up with all of your keybindings. Right click, "Add a new key", don't enter any code into the box (doesn't matter what title you give it; I chose "Disable Space"), "OK", click in the little box on the bottom left of the main window, press space, and then apply.