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Moves the current window by a specified amount.


window.moveBy(deltaX, deltaY) 


  • deltaX is the amount of pixels to move the window horizontally.
  • deltaY is the amount of pixels to move the window vertically.


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


You can use negative numbers as parameters for this function. This function makes a relative move while window.moveTo makes an absolute move.

Since Firefox 7, it's no longer possible for a web site to move a window in a browser, according to the following rules:

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


Specification Status Comment
CSS Object Model (CSSOM) View Module
The definition of 'window.moveBy()' in that specification.
Working Draft  

See also

Document Tags and Contributors

 Contributors to this page: cvrebert, fscholz, teoli, libreGeekingKid, ethertank, Sheppy, Mgjbot, Dria, JesseW
 Last updated by: cvrebert,