Keyboard Events, event Object

• Sent to event handler when an event occurs.
• Contains data about the event:
• type - the type of event.
• target - the object, document, link, button, etc.
• which - button pressed for mouse events, key for keyboard events.  Theoretically, use to create number-only fields.
• modifiers - modifier key pressed (Ctrl, Alt, Shift)
• data - list of dropped data for drag and drop events.
• pageX, pageY - the mouse's X and Y position on the page.
• screenX, screenY - the mouse's X and Y position on the screen.
• Use X and Y positions for marketing data.  How?

• Use with the event object, above.
• onKeyPress, onKeyDown, onKeyUp, just like mouse events.
• Use String.fromCharCode(event.which) to find the key pressed.
• event object works best with Netscape Navigator.
• Must define a function and dynamically assing the handler to use event object.

Dynamically Assigned Event Handlers
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Internet II: Day 4