The Essential Guide to HTML5

CANNONBALL AND SL INGSHOT

Function Invoked By / Called By Calls

moveball Invoked by call of the moveit method for the one
Ball object

Picture Invoked directly by code in var statements

drawAnImage Invoked by call of the draw method for a Picture
object

Table 4-4 shows the complete code for the second application, but only the changed lines have

comments.

Table 4-4. The Second Cannonball Application

Code Explanation