The IDBCursor interface of the IndexedDB API represents a cursor for traversing or iterating over multiple records in a database.
The advance() method of the IDBCursor interface sets the number times a cursor should move its position forward.
This method may raise a DOMException of one of the following types:
An IDBRequest object on which subsequent events related to this operation are fired. The result attribute is set to undefined.
A string (defined by the IDBCursorDirection enum) indicating the direction in which the cursor is traversing the data. Possible values are:
The update() method of the IDBCursor interface returns an IDBRequest object, and, in a separate thread, updates the value at the current position of the cursor in the object store. If the cursor points to a record that has just been deleted, a new record is created.
The IDBCursor interface of the IndexedDB API represents a cursor for traversing or iterating over multiple records in a database.
The connection is not actually closed until all transactions created using this connection are complete. No new transactions can be created for this connection once this method is called. Methods that create transactions throw an exception if a closing operation is pending.
The method takes the name of the store as well as a parameter object that lets you define important optional properties. You can use the property to uniquely identify individual objects in the store. As the property is an identifier, it should be unique to every object, and every object should have that property.
A DOMString containing the name of the connected database.
A DOMStringList containing a list of the names of the object stores currently in the connected database.
This example shows an IDBOpenDBRequest.onupgradeneeded block that creates a new object store; it also includes onerror and onabort functions to handle non-success cases.
This example shows an IDBOpenDBRequest.onupgradeneeded block that creates a new object store; it also includes onerror and onabort functions to handle non-success cases.
This example shows an IDBOpenDBRequest.onupgradeneeded block that creates a new object store; it also includes onerror and onabort functions to handle non-success cases, and an onversionchange function to notify when a database structure change has occurred.