IDBDatabase.onerror

The onerror event handler of the IDBDatabase interface handles the error event, fired when a request returns an error and bubbles up to the connection object.

Note: Consider using IDBOpenDBRequest.onsuccess instead (see IDBRequest.onsuccess, where it is inherited from).

Note: This feature is available in Web Workers.

Syntax

IDBDatabase.onerror = function(error) { ... }

Example

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.

DBOpenRequest.onupgradeneeded = function(event) {
  var db = this.result;
    
  db.onerror = function(event) {
    note.innerHTML += '<li>Error opening database.</li>';
  };

  db.onabort = function(event) {
    note.innerHTML += '<li>Database opening aborted!</li>';
  };

  // Create an objectStore for this database
    
  var objectStore = db.createObjectStore("toDoList", { keyPath: "taskTitle" });
    
  // define what data items the objectStore will contain
    
  objectStore.createIndex("hours", "hours", { unique: false });
  objectStore.createIndex("minutes", "minutes", { unique: false });
  objectStore.createIndex("day", "day", { unique: false });
  objectStore.createIndex("month", "month", { unique: false });
  objectStore.createIndex("year", "year", { unique: false });

  objectStore.createIndex("notified", "notified", { unique: false });
    
  note.innerHTML += '<li>Object store created.</li>';
};

Specifications

Specification Status Comment
Indexed Database API
The definition of 'onerror' in that specification.
Recommendation  
Indexed Database API 2.0
The definition of 'onerror' in that specification.
Recommendation  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support

24

23 — 24 webkit

12

16

10 — 16 moz

101157
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes22228 Yes

1. partial

See also

Document Tags and Contributors

Contributors to this page: chrisdavidmills, fscholz, jpmedley, arronei, gnacu, libbymc
Last updated by: chrisdavidmills,