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Dealing With Large Data In Ajax
- 1. Dealing with large data in Ajax Robert Buffone Chief Architect Nexaweb Technologies
- 2. Agenda The Basics XML vs. JSON Delayed loading Paging Infinite Scrollbars
- 3. The Basics JavaScript Performance Data Processing Development DOM Creation Asynchronous Data Hiding Visual Tricks Bonues Challenges
- 4. Balance Your Constraints Processor Memory Network
- 5. XML vs. JSON Transfer Size Parsing Navigation Data Traversal Security
- 6. Delayed Loading Only create UI for the visible presentation. Example: www.yahoo.com Minimizes Startup time Bandwidth requirements User may never want the data
- 7. Paging Same principal as any application Load data in pieces Manage the state of the navigation bar
- 8. Infinite Scrollbars Capture Scroll Event Understand when user wants to scroll Notify user of paging Append Data
- 9. Ajax Performance Limit use of String concatenation Use for (i++) over for (in) Avoid using exceptions Minimize code needed Watch your scope More information can be found at http:// www.rockstarapps.com
- 10. Visual Tricks Give users queues about progress. Overalls stop users from redoing an ongoing action. Display controls will data is loading.
- 11. Questions Type Questions into either the Chat or Q&A windows and I will answer them.
- 12. Getting Started Attendees are eligible for: Extended Nexaweb Evaluation License 6-months plus 10 hours of Free Email Support Download Now: www.nexaweb.com/go/try FREE On-site Ajax Performance Consultation 1 day, on-site consultation by Nexaweb Tech Services. Limited to first 5 respondents (US only). Customer is responsible for consultant travel expenses (maximum of $1,000 US). Contact: Doug Moniz Nexaweb Business Development 781.345.5448 [email_address]