Capella IT3215 Unit 3 Discussion (dq1+dq2) Latest 2019 December

IT3215 Introduction to JavaScript

Unit 3 Discussion

DQ 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.

DQ2 Challenges With Dynamic Images, Events, and the DOM

Note: The second discussion in each unit of this course is dedicated to community sharing of challenges and solutions you have encountered while completing your Unitly assignment. You are encouraged to post and respond early in the Unit to share experiences that you are having, and to help others with theirs. This is how coders solve tough issues: they rely on one another!

Dynamic images and events can make a Web page pop. For some, creating this interactivity is a snap; for others it can be a bit of a challenge.

Discuss one or more of the challenges or experiences that you encountered when trying to complete this Unit's assignment. How did you try to address it or solve it?