The keyup event is fired when a key is released.
General info
- Specification
 - DOM L3
 - Interface
 - KeyboardEvent
 - Bubbles
 - Yes
 - Cancelable
 - Yes
 - Target
 - Document, Element
 - Default Action
 - None
 
Properties
| Property | Type | Description | 
|---|---|---|
target Read only  |  
    EventTarget |  
    The event target (the topmost target in the DOM tree). | 
type Read only  |  
    DOMString |  
    The type of event. | 
bubbles Read only  |  
    Boolean |  
    Whether the event normally bubbles or not | 
cancelable Read only  |  
    Boolean |  
    Whether the event is cancellable or not? | 
view Read only  |  
  WindowProxy |  
  document.defaultView (window of the document) |  
detail Read only  |  
  long (float) |  
  0. | 
target |  
  EventTarget (DOM element) | Focused element processing the key event, root element if no suitable input element focused. | 
char Read only  Unimplemented (see bug 680830) |  
  DOMString (string) |  
    The character value of the key.  
    If the key corresponds to a printable character, this value is a non-empty Unicode string containing that character. 
    If the key doesn't have a printable representation, this is an empty string. 
    See key names and char values for the detail. 
      
      Note: If the key is used as a macro that inserts multiple characters, this attribute's value is the entire string, not just the first character. 
      
   |  
key Unimplemented (see bug 680830) |  
  DOMString (string) |  
    The key value of the key represented by the event. 
    If the value has a printed representation, this attribute's value is the same as the char attribute. 
    Otherwise, it's one of the key value strings specified in {{ anch("Key values") }}. 
    If the key can't be identified, this is the string "Unidentified". 
    See key names and char values for the detail. 
    Read Only. 
   |  
charCode Read only    |  
  Unsigned long (int) |  
    The Unicode reference number of the key; this attribute is used only by the keypress event. 
    For keys whose char attribute contains multiple characters, this is the Unicode value of the first character in that attribute. 
     
      Warning: This attribute is deprecated; you should use   
  char instead, if available. 
     |  
keyCode Read only    |  
  Unsigned long (int) |  
    A system and implementation dependent numerical code identifying the unmodified value of the pressed key. 
    This is usually the decimal ASCII ({{ RFC(20) }}) or Windows 1252 code corresponding to the key; see {{ anch("Virtual key codes") }} for a list of common values. 
    If the key can't be identified, this value is 0. 
      
      Warning: This attribute is deprecated; you should use   
  key instead, if available. 
     |  
which Read only    |  
  Unsigned long (int) |  
    A system and implementation dependent numeric code identifying the unmodified value of the pressed key; this is usually the same as keyCode. 
     
      Warning: This attribute is deprecated; you should use   
  key instead, if available. 
     |  
location Read only  |  
  long (float) | The location of the key on the device. | 
repeat Read only  Unimplemented |  
  boolean |  
    true if a key has been depressed long enough to trigger key repetition, otherwise false. 
   |  
locale Read only  Unimplemented |  
  string | The language code for the key event, if available; otherwise, the empty string. | 
ctrlKey Read only  |  
  boolean | true if the control key was down when the event was fired. false otherwise. |  
shiftKey Read only  |  
  boolean | true if the shift key was down when the event was fired. false otherwise. |  
altKey Read only  |  
  boolean | true if the alt key was down when the event was fired. false otherwise. |  
metaKey Read only  |  
  boolean | true if the meta key was down when the event was fired. false otherwise. |