shiftKey Sample

This example demonstrates how to retrieve the state of the SHIFT key. Press any key and the onkeydown event handler fires, enabling you to retrieve the state of the SHIFT key. Because the onkeyup event handler only fires when a key is released, it always returns false for the SHIFT key's state. The onkeypress event handler only fires when the user presses an alphanumeric key—it does not fire if the SHIFT key is pressed.

State of SHIFT key from the onkeydown event handler:
State of SHIFT key from the onkeyup event handler:
State of SHIFT key from the onkeypress event handler:

[Right-click and choose View Source from the shortcut menu.]