The Essential Guide to HTML5

INDEX

for memory game sample, 153, 154, 167
for quiz sample, 193
for rock-paper-scissors game sample, 275
rotations and, 104
for single-die throws, in craps game sample,
40
for slingshot sample, 128
initialization statements, 26
inmotion variable, 108, 109, 220
innerHTML attribute, 188
input-output (I/O), 24
input validation, 38, 79
for bouncing ball sample, 67, 91–95
feedback and, 80
invalid/bad input and, 69, 70, 79
internationalization, 284
Internet Explorer, HTML5 and, 19
intersect function, 222–224
invalid/bad input, 69, 79, 96
isNumber function, 79
italics, pseudo-code and, 28

J
JavaScript, 1, 4, 10
blackjack card game sample and, 323–330
bouncing ball sample and, 70–80
cannonball sample and, 101–111
canvas and, 30
craps game sample and, 24–38
curly brackets ({ }) and, 270
declaration statements and, 26
Hangman game sample and, 295–302
mazes sample and, 219–232
memory game sample and, 146–154
parentheses ( ) and, 270
pseudo-random processing and, 24
quiz sample and, 184–193
rock-paper-scissors game sample and,
263–274
slingshot sample and, 101–111
square brackets ([ ]) and, 270
join method, 230

K
key/value pairs, local storage and, 224
keycodes, 221, 329

keystroke capture, 219, 220, 328

knowledge base, for quiz sample, 183, 193

L

left value, 31

legal considerations, linking web sites and, 18

length attribute, facts array and, 185

lettersguessed variable, 300

level array, radio buttons and, 232

line breaks, 6

line segments

dice game sample and, 32

slingshot sample and, 107

linear gradients, 72

lineTo method, 107

paths and, 299

polygons and, 152

local storage, 214, 224–231, 257

encoding data for, 230

mazes sample and, 218

measuring elapsed time and, 230

localization, 284

localStorage object, 224, 225

localStorage.setItem method, 230

logical values, 27

logos, 18

looping variable, 323

lsname variable, 231

M

makedeck function, for memory game sample,

147, 155, 167

margins , 8

markup, 1, 4

Math class, 24, 32

Math.atan2, 109

Math .floor method

blackjack card game sample and, 328

craps game sample and, 24

rock-paper-scissors game sample and, 267

Math.max method, 185

Math.PI constant, 32, 104

Math.PI*2, 71

Math.PI/6, 104

Math.random method

blackjack card game sample and, 328