My presentation of the Frost library for the W3C/OAA Workshop on Mobile Ajax 28 September 2007 in Mountain View.

1. Frost Ajax Library
Ajax library for constrained browsers
Rocco Georgi
PavingWays

2. Motivation
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Ajax works in many mobile browsers
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JavaScript/DOM implementations vary
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existing libraries don't work in many cases

3. Approach
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cross-browser Ajax for mobile web apps
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support weakest browser capable of Ajax
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small codebase (core < 3k)
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limited functionality in core
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extensible by users
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use only basic JavaScript (no prototyping)
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fall-back mechanisms
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task-oriented

4. What can it do?
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browser-dependent output
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debug output
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basic Ajax requests
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callbacks handling returned data
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timeouts if offline
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putting data somewhere
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basic page manipulations

5. Supported Browsers
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all ...
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that know the XHR object
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...or that know an ActiveX

6. How does it work?
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testing -> browser capabilities DB
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browser detection
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capability-based output
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...or universal version
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server and client components (PHP, Rails)
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write markup
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load or include lib
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execute f('name', [args])

7. Main Issues / Roadmap
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first release
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–
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test setup
testing
building demos
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combine with testing
community building
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getting feedback
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enabling easy extension