42. 50x50 table creation
W3C DOM Table methods innerHTML
by Windows XP,
Quirksmode.org
IE6
IE7
Firefox2
Firefox3
Opera
Safari
0 1,000 2,000 3,000 4,000
ms
DOM I/O test
43. Set Style
• by style property - BAD
elm.style.backgroundColor = ‘#f00’;
elm.style.width = ‘20px’;
• by CSS & className property - GOOD
style.css
.foo { background-color:#f00; width:20px; }
script.js
elm.className = ‘foo’;
44. 4x425(1,700) td style
className style by Windows XP,
Quirksmode.org
IE6
IE7
Firefox2
Firefox3
Opera
Safari
0 100 200 300 400
ms
Set Style test
49. • Front-end Performance
• Trade-off
• Service / Client environment
• As UI Developer
• Unobtrusive JavaScript
• Development Process
• Accessibility
50. References
• YDN Exceptional Performance :
Best Practices for Speeding Up Your Web Site
• ) *+, -./ 01(High Performance
Web Sites), 2'3, Steve Souders
• QuirksMode.org