Window screenLeft and screenTop Properties
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>");
Try it Yourself »
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 |
|---|
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>");
Try it Yourself »
❮ Window Object
