Window: moveBy() method

The moveBy() method of the Window interface moves the current window by a specified amount.

Note: This function moves the window relative to its current location. In contrast, window.moveTo() moves the window to an absolute location.

Syntax

js
moveBy(deltaX, deltaY)

Parameters

deltaX

The amount of pixels to move the window horizontally. Positive values are to the right, while negative values are to the left.

deltaY

The amount of pixels to move the window vertically. Positive values are down, while negative values are up.

Return value

None (undefined).

Examples

This example moves the window 10 pixels to the right and 10 pixels up.

js
function budge() {
  moveBy(10, -10);
}

Specifications

As of Firefox 7, websites can no longer move a browser window in the following cases:

  1. You can't move a window or tab that wasn't created by Window.open().
  2. You can't move a window or tab when it's in a window with more than one tab.

Note: This function might not move the window synchronously. In some environments (like Wayland, or mobile) it might not move the window at all. Currently there's no way to listen to a move event, see CSS Working Group issue #7693.

See also