IDBRequest
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The EventTarget.addEventListener() method registers the specified listener on the EventTarget it's called on.
The EventTarget.addEventListener() method registers the specified listener on the EventTarget it's called on. The event target may be an Element in a document, the Document itself, a Window, or any other object that supports events (such as XMLHttpRequest).
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Dispatches an Event at the specified EventTarget, invoking the affected EventListeners in the appropriate order.
Dispatches an Event at the specified EventTarget, invoking the affected EventListeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) apply to events dispatched manually with dispatchEvent().
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A DOMError containing the relevant error.
A DOMError containing the relevant error. The following error codes are returned under certain conditions:
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The event handler for the error event.
The event handler for the error event.
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The event handler for the success event.
The event handler for the success event.
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The state of the request.
The state of the request. Every request starts in the pending state. The state changes to done when the request completes successfully or when an error occurs.
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Removes the event listener previously registered with EventTarget.addEventListener.
Removes the event listener previously registered with EventTarget.addEventListener.
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Returns the result of the request.
Returns the result of the request. If the the request failed and the result is not available, the InvalidStateError exception is thrown.
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The source of the request, such as an Index or a ObjectStore.
The source of the request, such as an Index or a ObjectStore. If no source exists (such as when calling IDBFactory.open), it returns null.
MDN
The transaction for the request.
The transaction for the request. This property can be null for certain requests, such as for request returned from IDBFactory.open (You're just connecting to a database, so there is no transaction to return).
MDN
The IDBRequest interface of the IndexedDB API provides access to results of asynchronous requests to databases and database objects using event handler attributes. Each reading and writing operation on a database is done using a request.
The request object does not initially contain any information about the result of the operation, but once information becomes available, an event is fired on the request, and the information becomes available through the properties of the IDBRequest instance.
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