643oncanplaythrough event, 449
onclose event, 417, 419
ondurationchange event, 449
onemptied event, 449
onended event, 449
onerror event
FileEntry object and, 604
FileReader object and, 603
FileWriter object and, 603
HTMLMediaEvent object and, 449
IDBObjectStore object and, 594
IDBRequest object and, 591
WebSocket object and, 417, 419
online event, 117
onload event, 469
onloadeddata event, 449
onloadedmetadata event, 449
onloadend event, 603
onloadstart event, 449
:only-child pseudo class, 149
:only-of-type pseudo class, 149
onmessage event, 417, 419
onopen event, 417, 419
onpause event, 449
onplay event, 449
onplaying event, 449
onprogress event, 449
onratechange event, 449
onreadystatechange event, 371, 449
onseeked event, 449
onseeking event, 449
onstalled event, 449
onsuccess event, 591, 594
onsuspend event, 449
ontimeupdate event, 449
onupgradeneeded event, 591
onvolumechange event, 449
onwaiting event, 449
onwriteend event, 603
opacity property (CSS), 172private data and, 268
terminology used, 262–263
object stores
adding indexes, 592–593
deleting records, 595
described, 591
inserting new records, 594
removing, 593
removing indexes, 593
retrieving records, 595–596
understanding cursors, 596–599
updating existing records, 594–595
using transactions, 593–594
versioning and, 591
objects. See also JavaScript objects
accessing DOM objects, 112–120
described, 262
lesson summary and review, 120–121, 135
passing parameters to, 52
types of, 262
working with arrays, 108–112
obsolete event, 610
offline event, 117
offline web applications
described, 581
FileSystem API and, 600–606
HTTP cache and, 607–610
IndexedDB tool and, 589–599
lesson summary and review, 588–589, 599–
600, 606–607, 610 –611, 617–619
practice exercises, 611–616
Web SQL database and, 582–588
.oga file extension, 444–445
.ogg file extension, 444
Ogg/Theora format, 438
Ogg/Vorbis format, 444
.ogv file extension, 438–439
- element, 34, 221–222
onabort event, 449
oncanplay event, 449
opacity property (CSS)