HTML and CSS Reference
In-Depth Information
Battery API
20
10
N/A
N/A
N/A
For this example, you can either continue working with the code from the previous section
or, if you don't have access to a mobile phone, you can use the code from
section I.3.3
as a
starting point. The changes required to the
draw()
function are shown next.
Listing I.30. Using the
battery
object in the
draw
function
As the annotation mentions, the
battery
object needs to be passed in, which necessitates
a small change in the
go()
function. The next listing shows the code for getting a reference
to the battery status and passing it to
wilson.draw()
.
Listing I.31. Passing the
battery
object to the
draw()
function
var
battery
=
navigator
.
battery
||
navigator
.
mozBattery
||
navigator
.
webkitBattery
;
wilson
.
draw
(
canvas
,
battery
);
