The blocked handler is executed when an open connection to a database is blocking a versionchange transaction on the same database.
| Property | Type | Description |
|---|---|---|
target Read only
| EventTarget | The request concerned by this event |
type Read only
| DOMString | The type of event. |
bubbles Read only
| boolean | Does the event normally bubble? |
cancelable Read only
| boolean | Is it possible to cancel the event? |
newVersion Read only
| unsigned long (int) | The new version of the database. |
oldVersion Read only
| unsigned long (int) | The old version of the database. |
var req1 = indexedDB.open("addressbook", 3);
req1.onsuccess = function( event ) {
var addressbookDB = event.target.result;
// Let's try to open the same database with a higher revision version
var req2 = indexedDB.open("addressbook", 4);
// In this case the onblocked handler will be executed
req2.onblocked = function( e ) {
console.log(e)
};
};
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/Events/blocked_indexedDB