Dexie.on.blocked
Syntax
db.on("blocked", function () {});
Description
The “blocked” event occurs if database upgrade is blocked by another tab or browser window keeping a connection open towards the database. Note that before this event is triggered, the other window is triggered with the “versionchange” event. Only if the other window doesn’t respond by closing it’s DB connection, this “blocked” event will occur.
By default, Dexie will close any connection and console.warn() when a “versionchange” event occurs, so if you’re only using Dexie to open your database and not override the default behaviour of the “versionchange” event, this event will unlikely happen unless a page has hanged or is slow to respond.
When the blocked event occur, the upgrade transaction has not yet failed. The upgrading will resume as soon as the blocker releases the database.
Sample
var db = new Dexie("MyDB");
db.on("blocked", function() {
alert ("Database upgrading was blocked by another window. " +
"Please close down any other tabs or windows that has this page open");
});
Table of Contents
- API Reference
- Access Control in Dexie Cloud
- Authentication in Dexie Cloud
- Best Practices
- Building Addons
- Collection
- Collection.and()
- Collection.clone()
- Collection.count()
- Collection.delete()
- Collection.desc()
- Collection.distinct()
- Collection.each()
- Collection.eachKey()
- Collection.eachPrimaryKey()
- Collection.eachUniqueKey()
- Collection.filter()
- Collection.first()
- Collection.keys()
- Collection.last()
- Collection.limit()
- Collection.modify()
- Collection.offset()
- Collection.or()
- Collection.primaryKeys()
- Collection.raw()
- Collection.reverse()
- Collection.sortBy()
- Collection.toArray()
- Collection.uniqueKeys()
- Collection.until()
- Compound Index
- Consistency in Dexie Cloud
- Consuming Dexie as a module
- DBCore
- DBCoreAddRequest
- DBCoreCountRequest
- DBCoreCursor
- DBCoreDeleteRangeRequest
- DBCoreDeleteRequest
- DBCoreGetManyRequest
- DBCoreGetRequest
- DBCoreIndex
- DBCoreKeyRange
- DBCoreMutateRequest
- DBCoreMutateResponse
- DBCoreOpenCursorRequest
- DBCorePutRequest
- DBCoreQuery
- DBCoreQueryRequest
- DBCoreQueryResponse
- DBCoreRangeType
- DBCoreSchema
- DBCoreTable
- DBCoreTableSchema
- DBCoreTransaction
- DBCoreTransactionMode
- DBPermissionSet
- Deprecations
- Derived Work
- Design
- Dexie Cloud CLI
- Dexie Cloud Docs
- Dexie Cloud REST API
- Dexie Constructor
- Dexie.AbortError
- Dexie.BulkError
- Dexie.ConstraintError
- Dexie.DataCloneError
- Dexie.DataError
- Dexie.DatabaseClosedError
- Dexie.IncompatiblePromiseError
- Dexie.InternalError
- Dexie.InvalidAccessError
- Dexie.InvalidArgumentError
- Dexie.InvalidStateError
- Dexie.InvalidTableError
- Dexie.MissingAPIError
- Dexie.ModifyError
- Dexie.NoSuchDatabaseErrorError
- Dexie.NotFoundError
- Dexie.Observable
- Dexie.Observable.DatabaseChange
- Dexie.OpenFailedError
- Dexie.PrematureCommitError
- Dexie.QuotaExceededError
- Dexie.ReadOnlyError
- Dexie.SchemaError
- Dexie.SubTransactionError
- Dexie.Syncable
- Dexie.Syncable.IDatabaseChange
- Dexie.Syncable.IPersistentContext
- Dexie.Syncable.ISyncProtocol
- Dexie.Syncable.StatusTexts
- Dexie.Syncable.Statuses
- Dexie.Syncable.registerSyncProtocol()
- Dexie.TimeoutError
- Dexie.TransactionInactiveError
- Dexie.UnknownError
- Dexie.UnsupportedError
- Dexie.UpgradeError()
- Dexie.VersionChangeError
- Dexie.VersionError
- Dexie.[table]
- Dexie.addons
- Dexie.async()
- Dexie.backendDB()
- Dexie.close()
- Dexie.currentTransaction
- Dexie.debug
- Dexie.deepClone()
- Dexie.defineClass()
- Dexie.delByKeyPath()
- Dexie.delete()
- Dexie.derive()
- Dexie.events()
- Dexie.exists()
- Dexie.extend()
- Dexie.fakeAutoComplete()
- Dexie.getByKeyPath()
- Dexie.getDatabaseNames()
- Dexie.hasFailed()
- Dexie.ignoreTransaction()
- Dexie.isOpen()
- Dexie.js
- Dexie.name
- Dexie.on()
- Dexie.on.blocked
- Dexie.on.close
- Dexie.on.error
- Dexie.on.populate
- Dexie.on.populate-(old-version)
- Dexie.on.ready
- Dexie.on.storagemutated
- Dexie.on.versionchange
- Dexie.open()
- Dexie.override()
- Dexie.semVer
- Dexie.setByKeyPath()
- Dexie.shallowClone()
- Dexie.spawn()
- Dexie.table()
- Dexie.tables
- Dexie.transaction()
- Dexie.transaction()-(old-version)
- Dexie.use()
- Dexie.verno
- Dexie.version
- Dexie.version()
- Dexie.vip()
- Dexie.waitFor()
- DexieCloudOptions
- DexieError
- Docs Home
- Download
- Export and Import Database
- Get started with Dexie in Angular
- Get started with Dexie in React
- Get started with Dexie in Svelte
- Get started with Dexie in Vue
- Hello World
- How To Use the StorageManager API
- Inbound
- IndexSpec
- Indexable Type
- IndexedDB on Safari
- Invite
- Migrating existing DB to Dexie
- MultiEntry Index
- Promise
- Promise.PSD
- Promise.catch()
- Promise.finally()
- Promise.on.error
- Promise.onuncatched
- Purchase Subscription
- Questions and Answers
- Releasing Dexie
- Road Map
- Road Map: Dexie 4.0
- Road Map: Dexie Cloud
- Run Dexie Cloud on Own Servers
- Sharding and Scalability
- Simplify with yield
- Stop Putin!
- SyncState
- Table
- Table Schema
- Table.add()
- Table.bulkAdd()
- Table.bulkDelete()
- Table.bulkGet()
- Table.bulkPut()
- Table.bulkUpdate()
- Table.clear()
- Table.count()
- Table.defineClass()
- Table.delete()
- Table.each()
- Table.filter()
- Table.get()
- Table.hook('creating')
- Table.hook('deleting')
- Table.hook('reading')
- Table.hook('updating')
- Table.limit()
- Table.mapToClass()
- Table.name
- Table.offset()
- Table.orderBy()
- Table.put()
- Table.reverse()
- Table.schema
- Table.toArray()
- Table.toCollection()
- Table.update()
- Table.where()
- The main limitations of IndexedDB
- Transaction
- Transaction.abort()
- Transaction.on.abort
- Transaction.on.complete
- Transaction.on.error
- Transaction.table()
- Tutorial
- Typescript
- Understanding the basics
- UserLogin
- Version
- Version.stores()
- Version.upgrade()
- WhereClause
- WhereClause.above()
- WhereClause.aboveOrEqual()
- WhereClause.anyOf()
- WhereClause.anyOfIgnoreCase()
- WhereClause.below()
- WhereClause.belowOrEqual()
- WhereClause.between()
- WhereClause.equals()
- WhereClause.equalsIgnoreCase()
- WhereClause.inAnyRange()
- WhereClause.noneOf()
- WhereClause.notEqual()
- WhereClause.startsWith()
- WhereClause.startsWithAnyOf()
- WhereClause.startsWithAnyOfIgnoreCase()
- WhereClause.startsWithIgnoreCase()
- db.cloud.configure()
- db.cloud.currentUser
- db.cloud.permissions()
- db.syncable.connect()
- db.syncable.delete()
- db.syncable.disconnect()
- db.syncable.getOptions()
- db.syncable.getStatus()
- db.syncable.list()
- db.syncable.on('statusChanged')
- db.syncable.setFilter()
- dexie-cloud-addon
- dexie-react-hooks
- liveQuery()
- unhandledrejection-event
- useLiveQuery()
- useObservable()
- usePermissions()