The updateready event is fired when the resources listed in the application cache manifest have been newly redownloaded, and the script can use swapCache() to switch to the new cache.
| Property | Type | Description |
target |
EventTarget (DOM element) | The event target (the topmost target in the DOM tree). Read Only. |
type |
string | The type of event. Read only. |
canBubble |
boolean | Does the event normally bubble? Read only. |
cancelable |
boolean | Is it possible to cancel the event? Read only. |