Family Collage: Manipulating Programmer-defined Objects on a Canvas

  • Jeanine Meyer


In this chapter, you will learn about
  • Creating and manipulating object-oriented programming for drawing on canvas

  • Handling mouse events, including double-click

  • Saving the canvas to an image

  • Using try and catch to trap errors

  • Browser differences involving the location of the code

  • Using algebra and geometry to construct shapes and determine when the cursor is over a specific object

  • Controlling the icon used for the cursor


Image File Mouse Button Constructor Function Event Handling Mouse Cursor 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Jeanine Meyer 2011

Authors and Affiliations

  • Jeanine Meyer

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