Window screenLeft and screenTop Properties

Window Object Reference Window Object

Example

Return the x and y coordinates of the new window relative to the screen:

var myWindow = window.open("", "myWin");
myWindow.document.write("<p>This is 'myWin'");
myWindow.document.write("<br>ScreenLeft: " + myWindow.screenLeft);
myWindow.document.write("<br>ScreenTop: " + myWindow.screenTop + "</p>");

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More "Try it Yourself" examples below.


Definition and Usage

The screenLeft and screenTop properties returns the x (horizontal) and y (vertical) coordinates of the window relative to the screen.


Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property
screenLeft Yes Yes Not supported Yes Yes
screenTop Yes Yes Not supported Yes Yes

Note: For Firefox, use "window.screenX" and "window.screenY" (See "More Examples" for a cross-browser solution).


Syntax

window.screenLeft
window.screenTop

Technical Details

Return Value: A Number, representing the horizontal and vertical distance of the window relative to the screen, in pixels

Examples

More Examples

Example

Cross browser solution (using screenX and screenY for IE8 and earlier):

// Open a new window with a specified left and top position
var myWindow = window.open("", "myWin", "left=700, top=350, width=200, height=100");

/*
If the browser does not support screenX and screen Y,
use screenLeft and screenTop instead (and vice versa)
*/
var winLeft = myWindow.screenLeft ? myWindow.screenLeft : myWindow.screenX;
var winTop = myWindow.screenTop ? myWindow.screenTop : myWindow.screenY;

// Write the new window's x and y coordinates relative to the screen
myWindow.document.write("<p>This is 'myWin'");
myWindow.document.write("<br>Horizontal: " + winLeft);
myWindow.document.write("<br>Vertical: " + winTop + "</p>");

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Window Object Reference Window Object

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