The Memory (aka Concentration) Game - The Essential Guide to HTML5 - page 157

var tablecolor = "rgb(255,255,255)"; Set the color value for

the board (table)

var cardrad = 30; Set the radius for the

polygons

var deck = []; Declare the deck,

initially an empty array

var firstsx = 30;

Set the position in x of
the first card

var firstsy = 50; Set the position in y of

the first card

var margin = 30; Set the spacing

between cards

var cardwidth = 4*cardrad; Set the card width to

four times the radius
of the polygons

var cardheight = 4*cardrad;

Set the card height to
four times the radius
of the polygons

var matched;

This variable is set in
choose and used in
flipback

var starttime;

This variable is set in
init and used to
calculate elapsed time

function Card(sx,sy,swidth,sheight,info) { Header for the Card

function, setting up
card objects

this.sx = sx;

Set the horizontal
coordinate

this.sy = sy; … vertical coordinate

this.swidth = swidth;

… width