windowindexedDBopenname

windowindexedDBopenname typically refers to the use of the browser’s IndexedDB API via the global window object to open a database by name. In browsers, window.indexedDB is the entry point to the asynchronous, transactional storage system designed for large amounts of structured data. The open method takes a database name and an optional version number, and it returns an IDBOpenDBRequest that will complete asynchronously with a database connection or an error.

When you call open, if a database with the given name does not exist, it will be created. If a version is supplied and differs from the current version, the onupgradeneeded event is fired to allow creation or migration of object stores and indexes. Typical workflow involves handling onupgradeneeded to define the schema (for example, creating object stores and indices), handling onsuccess to obtain the opened database instance for performing transactions, and handling onerror to deal with failures.

Once onsuccess fires, the event’s target.result is the IDBDatabase instance. You can begin transactions on object stores to read or write data. After completing operations, the database should be closed to free resources. The versionchange event may be listened for to respond if another context attempts to close or upgrade the database.

Usage considerations include that IndexedDB is per-origin and requires user consent as part of the browser’s privacy model; it is supported in modern browsers and available in the window scope as window.indexedDB in web environments (and as a global indexedDB in workers). This API is designed for reliable, asynchronous data storage beyond what cookies or localStorage can offer.