The keypress event is fired when a key is pressed down and that key normally produces a character value (use input instead).
keypress event; launch text composition system; blur and focus events; DOMActivate event; other event| 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. |
Chrome does not fire the keypress event for known keyboard shortcuts (reference). Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.
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https://developer.mozilla.org/en-US/docs/Web/Events/keypress