Peter Lubbers - Pro HTML 5 Programming

284
■ INDEX
stopping Web Workers, 198
timers, 199
within Web Workers, 198
WebGL, 260–262
WebSocket API, 3, 137–167, 230
browser support for, 154
building application with, 158–167
adding Geolocation code, 162
adding WebSocket code, 161–162
coding HTML file, 159–161
final code, 164–167
putting all together, 162–164
compared with polling, 143
echo server, 146–153
handshake, 140
interface, 141
overview, 137–144
protocol, 140
reduction in network traffic and latency
using, 142–144
server implementations, 147
using, 154–158
adding event listeners, 155
creating WebSocket object and
connecting to WebSocket server,
155
running WebSocket page, 156–158
sending messages, 155–156
WebSocketConnection, 148
width attribute, 77
Wi-Fi–based geolocation data, 90
willValidate attribute, 183
window object, 219
window.applicationCache, 250
window.applicationCache.status, 248
window.JSON, 21
window.openDatabase() function, 236
window.orientation property, 264
window.WebSocket command, 154
World Wide Web Consortium (W3C), 1, 3
■ X
XForms, 170
XMLHttpRequest, 126, 141
XMLHttpRequest Level 2, 126–135
application in action, 134–135
browser support, 129
code for application, 132
cross-origin communication, 126–128
progress events, 128
using, 129–131
building application, 131–132
making cross-origin requests, 130
progress events, 130
■ Z
Z-order, 53