The user can sort, filter, or paginate a set of records in a list or table to
obtain a better view on the displayed data.
Validation The script filters and validates the contents provided by the user before their
submission to the server.
Computation The web page manipulates the data provided by the user and gives an immediate
response. A unit measure converter, a currency converter, or a simple
calculator are all examples of computation problems that can be resolved on
the client side.
Visual Effects The script affects the presentation of the page: elements can change in style
(colors, fonts, borders, and so on), can be hidden or displayed, can be moved
or resized.
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Chapter 14: More Interactive Content with JavaScript
Problem Description
Advanced Controls The behavior layer provides functionalities and controls that are not
provided by the base implementations of the browser vendors. Date/Time
selectors, combo boxes, and sliders are examples of controls that can be
created using JavaScript.
User Preferences User preferences can be stored and retrieved by the behavior layer.
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