IT 3215: Unit 03 Discussion DQ1 Events, Dynamic Images, and Modularization
IT 3215: Unit 03 Discussion DQ1 Events, Dynamic Images, and Modularization
The ability
to animate graphics with JavaScript has resulted in increased interactivity of
Web sites. As we add more functionality into our scripts, it is important that
we take the time to modularize our code to make it more efficient. We want to
ensure our functions are split up for reuse.
Research
and describe some tips and suggestions for someone new to JavaScript to get
started. In particular, focus on at least two of the following points while
providing sample code (with comments) of each
Explain
which events and methods we can use to handle user interaction with images.
Distinguish
among HTML events, mouse events, and keyboard events.
Describe
the use of cross-browser compatible functions or methods for attaching and
detaching event handlers.
Describe
the use of images and preloaded images in applications like image rollovers and
slide shows.
Describe
setTimeout, setInterval, clearTimeout, and clearInterval.
Explain why
modularizing a program makes it more efficient.
Identify
the advantages and disadvantages of modularization.
Response
Guidelines
Comment on
the posts of at least two other learners, offering insights, solutions,
examples, or opinions that add depth and value to the conversation.
Learning
Components
This
activity will help you achieve the following learning components:
View
examples of effective JavaScript comments that describe and explain variables
and functions.
Examine how
JavaScript functions can assist in creating fast-loading image galleries.
Understand
the use of the settimeout function.
Understand
principles of modular code.
Understand
JavaScript timers including how the setInterval timer is used.
Resources
Discussion
Participation Scoring Guide.
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Use this document as a checklist for each paper you will write throughout your GCU graduate program. Follow specific instructions indicated in the assignment and use this checklist to help ensure correct grammar and APA formatting. Refer to the APA resources available in the GCU Library and Student Success Center.
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