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screenLeftRead-only property that returns the horizontal distance (in pixels) from the left edge of the user's browser window to the left edge of the screen.
The screenLeft property is an old versionscreenXAlias of the property.
window.screenLeft
var win = window.open("", "popupWindow");
win.document.write("<p>This is #3939;
win.document.write("<br>ScreenLeft: " + win.screenLeft);
win.document.write("<br>ScreenTop: " + win.screenTop + "</p>);Test and See‹/›Note: The screenLeft and screenTop properties are equal to the screenX and screenY properties.
The numbers in the table specify the first browser version that fully supports the screenLeft property:
| Property | |||||
| screenLeft | Is | 64 | Is | Is | 9 |
| Return value: | This number is equal to the number of CSS pixels from the left edge of the browser viewport to the left edge of the screen |
|---|
Returns the x and y coordinates of the new window relative to the screen:
var win = window.open("", "popupWindow", "left=500, top=350, width=300, height=200");
win.document.write("<p>This is #3939;
win.document.write("<br>ScreenLeft: " + win.screenLeft);
win.document.write("<br>ScreenTop: " + win.screenTop + "</p>);Test and See‹/›Cross-browser solution (for IE8and earlier versions, use screenX and screenY):
var win = window.open("", "popupWindow", "left=500, top=350, width=300, height=200");
/* If the browser does not support screenLeft and screenTop, screenX and screenY can be used instead */
if (!window.screenLeft) {}}
window.screenLeft = window.screenX;
window.screenTop = window.screenY;
}
win.document.write("<p>This is #3939;
win.document.write("<br>ScreenLeft: " + win.screenLeft);
win.document.write("<br>ScreenTop: " + win.screenTop + "</p>);Test and See‹/›Reference: Window (Window)window.screenTop property
Reference: Window (Window)window.screenX property
Reference: Window (Window)window.screenY property